This paper presents study of rotor shaft system for
three different position of the disk, for a simply supported case
and it is important to determine natural frequency, critical
speeds and amplitudes of rotor system. This characteristic are
found by using ANSYS parametric design tool. Modal, harmonic
and transient cases are carried out for the single rotor system.
The results obtained for this analysis are useful for design of
rotor system. The results obtained from analytical method have
close agreement with the results obtained from ANSYS results.
MSEE Defense: Digital Processor to Monitor the Muscular Energy Drop in Surfac...rff001
This document describes a digital processor to monitor muscular energy drop in surface electromyograms (EMGs). The processor aims to monitor fatigue in muscles undergoing neuromuscular electrical stimulation (NMES) rehabilitation. It analyzes EMG signals to extract spectral parameters that quantify fatigue, like root mean square, average rectified value, and mean and medium frequencies. These parameters are used in a proposed NMES control system to monitor energy decrease and prevent total muscle fatigue. A digital processing unit was developed using MATLAB to validate the technique.
Cumulative hrf of NMWD model for Renin in patients with DepressionIJERA Editor
Hypercortisolism as a sign of hypothamamus-pituitary-adrenocortical (HPA) axis over activity and sleep EEG
changes are frequently observed in depression. Closely related to theHPA axis is the renin-angiotensinaldosterone
system (RAAS) as 1. adrenocorticotropic hormone(ACTH) is a common stimulus for cortisol and
aldosterone, 2. cortisol release is suppressed bymineralocorticoid receptor (MR) agonists 3. angiotensin II
(ATII) releases CRH and vasopressin from the hypothalamus. Here difference of sleep related activity of the
RAAS between depressed patients and healthy controls and also we found the analysis of survival function and
cumulative hazared rate function for renin.
Design of Semi-Automatic Vibration Absorber by using FEAIRJET Journal
This document describes the design of a semi-automatic dual mass vibration absorber using finite element analysis. The dual mass vibration absorber uses two movable masses that can be tuned to reduce vibrations by moving the masses in or out. Modal analysis using finite elements was conducted to analyze the vibration modes of the absorber. The analysis showed the natural frequencies and mode shapes changed as the mass positions along the rods were varied. The dual mass vibration absorber was found to be effective at reducing beam vibrations around the attachment point and elsewhere by tuning the absorber's frequency through mass positioning.
This document summarizes the key components and operating principles of a wave gear drive system. It discusses how wave gear drives provide advantages over traditional gearing systems such as zero backlash, high torsional stiffness, and high positional accuracy. The main components of a wave gear drive are the flex spline, wave generator, and circular spline. The wave generator causes deformation of the flex spline to partially engage and disengage its teeth with the circular spline's teeth, allowing for gear reductions. Wave gear drives have applications in aerospace, machine tools, medical equipment, printing presses, robots, and more due to their flexible design and performance advantages.
UNIVERSIDAD DE LAS FUERZAS ARMADAS ESPE SEDE LATACUNGA
DISEÑ Y CONSTRUCCION DE UNA MAQUINA DE MOVIMIENTO PERPETUO
ERICK SAMUEL LEON REINOSO
NRC: 5994
ING. DIEGO PROAÑO
ING. AUTOMOTRIZ
IRJET - Vibration Analysis Technique for the Diagnosis of Bearing Housing Vib...IRJET Journal
This document summarizes a study on analyzing vibrations in a bearing housing made of different materials. The study used mild steel and Bakelite as housing materials for a 30205 taper roller bearing tested between 500-2500 RPM. Vibration signals were collected from the housings using an FFT analyzer. Results showed Bakelite housing had more uniform vibration patterns and lower amplitudes compared to mild steel across all speeds and axes. Bakelite demonstrated better damping of vibrations. The study concluded Bakelite is a more reliable housing material than mild steel for applications like offshore pumps due to its vibration damping and chemical resistivity properties.
11.performance evaluation of locally fabricated slipping machine for natural ...Alexander Decker
This document evaluates the performance of a locally fabricated slipping machine for processing natural rubber wood. The summary is as follows:
[1] The machine was able to cut rubber wood into various sizes, including rough sawn kiln dried timber and finger jointed four side planed sections.
[2] The design calculations for components like the belt, shaft, saw blade, and lift system were presented. The machine was found to have an efficiency of around 85%.
[3] Based on its ability to cut rubber wood into specified sizes and its high efficiency, the machine was determined to be suitable for its intended purpose of processing rubber wood for research studies.
This document analyzes anti-vibration mounts (AVMs) used to isolate engine vibrations from the base frame in diesel generator sets. It summarizes analytical, computer-aided engineering (CAE), and experimental results comparing rubber and neoprene mounts. Analytical calculations show neoprene provides higher isolation (>95%) than rubber (>84%). CAE frequency response analysis also indicates neoprene better shifts peak vibrations away from operating speeds. Experimental testing of actual engine confirms analytical and CAE results, showing neoprene reduces vibrations by 93.4% versus 89.7% for rubber, well below standards. The study concludes neoprene material provides better vibration isolation for AVMs compared to rubber.
MSEE Defense: Digital Processor to Monitor the Muscular Energy Drop in Surfac...rff001
This document describes a digital processor to monitor muscular energy drop in surface electromyograms (EMGs). The processor aims to monitor fatigue in muscles undergoing neuromuscular electrical stimulation (NMES) rehabilitation. It analyzes EMG signals to extract spectral parameters that quantify fatigue, like root mean square, average rectified value, and mean and medium frequencies. These parameters are used in a proposed NMES control system to monitor energy decrease and prevent total muscle fatigue. A digital processing unit was developed using MATLAB to validate the technique.
Cumulative hrf of NMWD model for Renin in patients with DepressionIJERA Editor
Hypercortisolism as a sign of hypothamamus-pituitary-adrenocortical (HPA) axis over activity and sleep EEG
changes are frequently observed in depression. Closely related to theHPA axis is the renin-angiotensinaldosterone
system (RAAS) as 1. adrenocorticotropic hormone(ACTH) is a common stimulus for cortisol and
aldosterone, 2. cortisol release is suppressed bymineralocorticoid receptor (MR) agonists 3. angiotensin II
(ATII) releases CRH and vasopressin from the hypothalamus. Here difference of sleep related activity of the
RAAS between depressed patients and healthy controls and also we found the analysis of survival function and
cumulative hazared rate function for renin.
Design of Semi-Automatic Vibration Absorber by using FEAIRJET Journal
This document describes the design of a semi-automatic dual mass vibration absorber using finite element analysis. The dual mass vibration absorber uses two movable masses that can be tuned to reduce vibrations by moving the masses in or out. Modal analysis using finite elements was conducted to analyze the vibration modes of the absorber. The analysis showed the natural frequencies and mode shapes changed as the mass positions along the rods were varied. The dual mass vibration absorber was found to be effective at reducing beam vibrations around the attachment point and elsewhere by tuning the absorber's frequency through mass positioning.
This document summarizes the key components and operating principles of a wave gear drive system. It discusses how wave gear drives provide advantages over traditional gearing systems such as zero backlash, high torsional stiffness, and high positional accuracy. The main components of a wave gear drive are the flex spline, wave generator, and circular spline. The wave generator causes deformation of the flex spline to partially engage and disengage its teeth with the circular spline's teeth, allowing for gear reductions. Wave gear drives have applications in aerospace, machine tools, medical equipment, printing presses, robots, and more due to their flexible design and performance advantages.
UNIVERSIDAD DE LAS FUERZAS ARMADAS ESPE SEDE LATACUNGA
DISEÑ Y CONSTRUCCION DE UNA MAQUINA DE MOVIMIENTO PERPETUO
ERICK SAMUEL LEON REINOSO
NRC: 5994
ING. DIEGO PROAÑO
ING. AUTOMOTRIZ
IRJET - Vibration Analysis Technique for the Diagnosis of Bearing Housing Vib...IRJET Journal
This document summarizes a study on analyzing vibrations in a bearing housing made of different materials. The study used mild steel and Bakelite as housing materials for a 30205 taper roller bearing tested between 500-2500 RPM. Vibration signals were collected from the housings using an FFT analyzer. Results showed Bakelite housing had more uniform vibration patterns and lower amplitudes compared to mild steel across all speeds and axes. Bakelite demonstrated better damping of vibrations. The study concluded Bakelite is a more reliable housing material than mild steel for applications like offshore pumps due to its vibration damping and chemical resistivity properties.
11.performance evaluation of locally fabricated slipping machine for natural ...Alexander Decker
This document evaluates the performance of a locally fabricated slipping machine for processing natural rubber wood. The summary is as follows:
[1] The machine was able to cut rubber wood into various sizes, including rough sawn kiln dried timber and finger jointed four side planed sections.
[2] The design calculations for components like the belt, shaft, saw blade, and lift system were presented. The machine was found to have an efficiency of around 85%.
[3] Based on its ability to cut rubber wood into specified sizes and its high efficiency, the machine was determined to be suitable for its intended purpose of processing rubber wood for research studies.
This document analyzes anti-vibration mounts (AVMs) used to isolate engine vibrations from the base frame in diesel generator sets. It summarizes analytical, computer-aided engineering (CAE), and experimental results comparing rubber and neoprene mounts. Analytical calculations show neoprene provides higher isolation (>95%) than rubber (>84%). CAE frequency response analysis also indicates neoprene better shifts peak vibrations away from operating speeds. Experimental testing of actual engine confirms analytical and CAE results, showing neoprene reduces vibrations by 93.4% versus 89.7% for rubber, well below standards. The study concludes neoprene material provides better vibration isolation for AVMs compared to rubber.
11.[38 48]performance evaluation of locally fabricated slipping machine for n...Alexander Decker
Researchers in Nigeria evaluated the performance of a locally fabricated machine for processing natural rubber wood. The machine was able to cut rubber wood into various sizes, including rough sawn kiln dried timber measuring 150mm wide, 2400mm long, and 25-75mm thick, and finger jointed four side planed sections measuring 30-100mm wide, 20-65mm thick, and up to 2400mm long depending on specifications. The researchers concluded that the machine performed efficiently, with an estimated efficiency of 96%, and was suitable for its intended purpose of cutting rubber wood samples for research studies.
This document describes the design and analysis of a high speed milling spindle to minimize deflection. Various spindle diameters and bearing configurations were considered, including duplex and triplet bearing arrangements. Static analysis was performed to calculate spindle nose deflection from bending and bearing elasticity. The optimum bearing span length that minimizes deflection was determined analytically and verified using ANSYS software. Results showed that bearing stiffness and span length significantly impact spindle deflection, with shorter spans and higher stiffness bearings reducing deflection.
This document details the design of a large trash compactor. The compactor is designed to compact trash by 75% in 8.8 seconds using a 450 horsepower motor connected to a gear train with a ratio of 5.6:1. The maximum output torque of the gear train is 10,010 Nm. Several components were analyzed, including the push plate, push rod, pressure vessel, motor, gears, shafts, and bearings. The minimum design factor found was 2.11 for shaft 2. The compactor is designed to fit within exterior dimensions of 2.43m x 2.43m x 6.71m.
The document describes an experimental investigation of a pedal-driven hacksaw. The pedal-driven hacksaw was designed, fabricated, and its performance was compared to a hand hacksaw. It uses a slider crank mechanism powered by pedaling a bicycle. As the pedals turn, a reciprocating rod moves a hacksaw blade back and forth to cut plywood workpieces. Experiments tested the relationship between cutting depth, strokes per minute, and pedaling speed. Results showed the pedal-driven hacksaw produced a 17mm cutting depth at 100 rpm and offered more accurate and faster cuts than a hand hacksaw. The pedal-driven hacksaw provides a low-cost option for cutting that does not require electricity or
Finite Element Analysis-Modeling and simulation of coil springsPratish Rawat
Several mechanical systems employed helical coil spring. It can be designed to show nonlinear performance. Spring stiffness exhibits nonlinear behavior depending on their role in various applications. This means that the stiffness of the spring is not continual, but governed by the compression. Nonlinear motion arises when the number of active coils of variable compression declines or rises. When coil springs are used as conical springs in dynamic systems, it becomes mandatory to identify the consequence of springs on dynamic performance. This article looks at the nonlinear dynamic behavior of conical springs with higher mass. In this article, coil springs considered have a constant pitch and elastic nature wise.This article compares experimental data for deformations of coil springs taken with those obtained by finite element method.
Design of an effective automated machine for quality palm kernel productionIOSR Journals
Abstract: Palm kernel production potentials of several countries are far from been fully exploited. At present,
many countries are operating below expected capacity and this research effort is to develop an appropriate
machine for quality production of palm kernel. Power requirement of the machine is 4.29kw, resultant bending
moment of the shaft is 4.67Nm and 85.30Nm and diameter of the shaft is 25.39mm. The machine is evaluated
using ‘Dura’ variety at moisture content; 12.00%, 11.10%, 10.20%, 9.60% and 9.00%, and ‘Tenera’ variety at;
12.00%, 11.00%, 10.00%, 9.10% and 8.20% moisture content. The performance of the machine shows that
throughput capacity increases from 625-1270 kg/hr for ‘Dura’ and also increases from 750-1200 kg/hr for
‘Tenera’. Mechanical damage reduces from 2.47-1.40% for ‘Dura’ and reduces from 1.16-0.20% for ‘Tenera’.
Functional efficiency increases from 92.30-96.40% for ‘Dura’ and increases from 95.50-99.07% for ‘Tenera’.
Quality performance efficiency increases from 91.00-95.30% for ‘Dura’ and increases from 95.50-98.80% for
‘Tenera’. The mean shearing force in ‘Dura’ is 31.10 ± 0.20N and that of ‘Tenera’ is 12.66 ± 0.20N.
Keywords - design, efficiency machine, palm kernel,
IRJET- Design and Analysis of Chain Drive Power Transmission from Station...IRJET Journal
This document describes the design and analysis of a chain drive power transmission system that can transmit power from a stationary source to oscillating devices. The system uses a modified chain with conical teeth that can automatically slide and lock into conical sockets on a driven wheel as the wheel oscillates between -45° and +45°. The design includes a chain section, driver section, and driven section. An analysis of the chain section was conducted using ANSYS software to evaluate stresses and ensure optimal performance. The results show this alternating transmission system can replace machines using multiple drives with a single drive and has applications where power needs to be transmitted to oscillating mechanisms.
This document provides an introduction to gears and gear trains. It defines common terms used in gears such as pitch circle, pitch diameter, pressure angle, addendum, and dedendum. It also classifies gears based on the position of shaft axes (parallel shaft gears include spur gears, helical gears, herringbone gears, bevel gears; intersecting shaft gears include straight bevel gears and spiral bevel gears). The document discusses advantages of gear drives such as transmitting exact velocity ratios and disadvantages such as requiring specialized manufacturing. It provides examples of different types of gears and their applications.
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
ME6601 design of transmission systems university question bankMohan2405
This document provides sample questions and problems for various types of mechanical transmission systems, including flat belt drives, V-belt drives, chain drives, and wire rope drives. It contains 10 questions for each transmission type, with the questions ranging from design problems to component selection problems. The questions are from previous years' examinations for the ME6601 - Design of Transmission Systems course at Anna University and are organized by transmission type and year.
IRJET- Fabrication of Modified Electromagnetic Actuating BrakeIRJET Journal
The document describes the fabrication of a modified electromagnetic actuating brake system for a drum brake that uses two electromagnetic coils connected to the brake wires at different lengths to allow it to function as a regular brake. Testing showed that the second actuator stopped the wheel faster than the first actuator across different wheel speeds. The system aims to provide electromagnetic actuation of the brake while addressing disadvantages like battery drain by incorporating a thermoelectric generator.
The document summarizes a study on how the process of assembling the pivot bearing affects the natural frequency of actuator arms in hard disk drives. The experiment varied the inside diameter of actuator arms and measured the installation force and natural frequencies after assembling with pivot bearings and tolerance rings. Results showed modes 4 and 5 had significantly different frequencies that correlated with installation force and bore size. Finite element modeling agreed with experimental results. In conclusion, the pivot bearing assembly process, particularly the compressive force from tolerance rings, impacts some vibration modes of the actuator arm.
IRJET- Design and Fabrication of Job Weight Operated Material Handling EquipmentIRJET Journal
This document describes the design and fabrication of a job weight operated material handling equipment. It aims to reduce electricity consumption and costs associated with traditional powered material handling systems. The system uses the potential energy of materials/jobs being transported to power its motion from one point to another instead of electricity. Key components include a weight-carrying plate, chain/rack assembly, sprockets, wheels, frame, and springs. It operates by converting the vertical movement of the weighted plate into rotational motion of wheels via the chain/sprocket mechanism to move the equipment linearly on its track. Advantages include no electricity use, low cost, easy maintenance and operation. It has applications in transferring materials between stations or loading/unloading trucks to reduce
This document presents a static analysis of a non-spinning three-disc rotor system conducted using finite element analysis in ANSYS. Numerical results for deflection, bending moment, and stresses are obtained and compared to theoretical calculations. A rotor model with three rigid discs supported by bearings is simulated in ANSYS under fixed and simply supported boundary conditions. The numerical results closely match the theoretical values, validating the ANSYS model.
STATIC AND DYNAMIC ANALYSIS OF HIGH SPEED MOTORIZED SPINDLEIRJET Journal
This document analyzes the static and dynamic behavior of a high-speed motorized spindle used in computer numerical control (CNC) machining centers. A spindle model is created in ANSYS software and analyzed under static rotational loading and dynamic cutting forces. Modal analysis identifies the spindle's natural frequencies and mode shapes. Harmonic response analysis examines deflection under simulated cutting forces from 0-1400Hz. Testing is done for spindle materials EN24 and H13 under aluminum machining parameters. Results show maximum deflections of 0.016mm and 0.005mm under rotational and cutting loads for EN24. Natural frequencies up to 2754Hz are identified. The study provides data on spindle stiffness and vibrational behavior to improve machining
IRJET- Forced Damped Vibration Analysis of Optimized Cantilever Beam using Di...IRJET Journal
This document summarizes a study on analyzing the forced damped vibration of an optimized cantilever beam using different methods. The study aims to identify a suitable material for manufacturing an engine casing by considering parameters like material, weight, damping coefficient, spring stiffness, and natural frequency. Using the Taguchi method and regression analysis, aluminum is identified as the optimal material. The natural frequency is then evaluated using theoretical, experimental (FFT analyzer), and simulation (ANSYS) methods. Time graphs and FFT readings from the experimental setup show peak frequencies that match the theoretical natural frequency of 5.36 Hz calculated using analytical methods.
The document discusses modal analysis of a high-speed milling spindle. A finite element model of the spindle is created in ANSYS based on its specifications. Modal analysis of the model yields natural frequencies including 422 Hz. Experimental modal analysis using an FFT analyzer on a manufactured spindle specimen yields frequencies up to 401 Hz. Comparing the finite element and experimental results, 422 Hz is identified as the natural resonance frequency of the spindle, which is above the designed operating speed of 16,000 rpm. The modal analysis shows no resonance will occur during operation.
Gearbox Noise & Vibration Prediction and ControlIRJET Journal
This document discusses techniques for reducing noise and vibration in gearboxes. It begins by reviewing common sources of gearbox noise like transmission error between gear teeth and vibration transferred to surrounding structures. Next, it examines factors that influence gear noise like torque, speed, and tooth design properties. Methods for analyzing noise like determining transmission error and time-varying gear mesh stiffness are presented. The goal is to minimize excitations from meshing gears that cause vibration of the gearbox casing and radiate noise.
Stress and Vibration Analysis of Turbine RotorIRJET Journal
This document summarizes the design and analysis of a turbine rotor intended to operate at speeds between 30,000-50,000 RPM. It discusses:
- Designing a blisk rotor using axi-symmetric modeling for stress analysis and optimization.
- Material selection for the rotor, with titanium alloy found to reduce thermal stresses compared to nickel alloy.
- Dynamic analysis showing the first critical speed to be 34,176 RPM, well above the operating speed.
- Stress analysis of the optimized rotor design found highest stresses of 451 MPa to be below the material yield strength.
- The rotor design was concluded to withstand the intended operating stresses and speeds.
To develop algorithm to create node at desired location on beam using absorberIRJET Journal
This document presents a study on developing an algorithm to reduce handle vibrations of a grass trimmer by imposing nodes at desired locations on the trimmer pipe using a variable stiffness vibration absorber. The grass trimmer is modeled as a free-free beam with lumped masses representing the engine, cutter head, and handle. An algorithm is developed based on the beam's equations of motion to iteratively find the absorber frequency required to impose a node and minimize vibration at the handle location. Numerical simulations and experimental tests are conducted to validate the effectiveness of the proposed method in suppressing vibrations at the handle by over 75%.
The document analyzes the modal characteristics of a Vibro Ripper gear through 3D modeling and finite element analysis in CATIA. It finds that the natural frequency and modal shapes change with increasing gear speed due to centrifugal stiffening effects. The radius and thickness of the gear's block also impact the natural frequency, with radius having a more complex influence. The natural frequency generally increases with greater block thickness, indicating higher gear stiffness.
This document summarizes research on vibrations that occur during chip removal mechanical processing. It discusses the types of vibrations that can appear, including forced vibrations caused by external factors and self-excited vibrations caused by factors related to the cutting process itself. The document presents theories on modeling the vibratory movement of the cutting tool as an oscillating system. Equations are provided that describe the oscillation frequency, amplitude, phase angle, and amplitude ratio based on parameters like the cutting force, tool and workpiece geometry, and system stiffness. The energy consumed in maintaining vibratory movement is also analyzed. Causes of self-excited vibrations are explored, and how vibrations can affect surface quality is described.
11.[38 48]performance evaluation of locally fabricated slipping machine for n...Alexander Decker
Researchers in Nigeria evaluated the performance of a locally fabricated machine for processing natural rubber wood. The machine was able to cut rubber wood into various sizes, including rough sawn kiln dried timber measuring 150mm wide, 2400mm long, and 25-75mm thick, and finger jointed four side planed sections measuring 30-100mm wide, 20-65mm thick, and up to 2400mm long depending on specifications. The researchers concluded that the machine performed efficiently, with an estimated efficiency of 96%, and was suitable for its intended purpose of cutting rubber wood samples for research studies.
This document describes the design and analysis of a high speed milling spindle to minimize deflection. Various spindle diameters and bearing configurations were considered, including duplex and triplet bearing arrangements. Static analysis was performed to calculate spindle nose deflection from bending and bearing elasticity. The optimum bearing span length that minimizes deflection was determined analytically and verified using ANSYS software. Results showed that bearing stiffness and span length significantly impact spindle deflection, with shorter spans and higher stiffness bearings reducing deflection.
This document details the design of a large trash compactor. The compactor is designed to compact trash by 75% in 8.8 seconds using a 450 horsepower motor connected to a gear train with a ratio of 5.6:1. The maximum output torque of the gear train is 10,010 Nm. Several components were analyzed, including the push plate, push rod, pressure vessel, motor, gears, shafts, and bearings. The minimum design factor found was 2.11 for shaft 2. The compactor is designed to fit within exterior dimensions of 2.43m x 2.43m x 6.71m.
The document describes an experimental investigation of a pedal-driven hacksaw. The pedal-driven hacksaw was designed, fabricated, and its performance was compared to a hand hacksaw. It uses a slider crank mechanism powered by pedaling a bicycle. As the pedals turn, a reciprocating rod moves a hacksaw blade back and forth to cut plywood workpieces. Experiments tested the relationship between cutting depth, strokes per minute, and pedaling speed. Results showed the pedal-driven hacksaw produced a 17mm cutting depth at 100 rpm and offered more accurate and faster cuts than a hand hacksaw. The pedal-driven hacksaw provides a low-cost option for cutting that does not require electricity or
Finite Element Analysis-Modeling and simulation of coil springsPratish Rawat
Several mechanical systems employed helical coil spring. It can be designed to show nonlinear performance. Spring stiffness exhibits nonlinear behavior depending on their role in various applications. This means that the stiffness of the spring is not continual, but governed by the compression. Nonlinear motion arises when the number of active coils of variable compression declines or rises. When coil springs are used as conical springs in dynamic systems, it becomes mandatory to identify the consequence of springs on dynamic performance. This article looks at the nonlinear dynamic behavior of conical springs with higher mass. In this article, coil springs considered have a constant pitch and elastic nature wise.This article compares experimental data for deformations of coil springs taken with those obtained by finite element method.
Design of an effective automated machine for quality palm kernel productionIOSR Journals
Abstract: Palm kernel production potentials of several countries are far from been fully exploited. At present,
many countries are operating below expected capacity and this research effort is to develop an appropriate
machine for quality production of palm kernel. Power requirement of the machine is 4.29kw, resultant bending
moment of the shaft is 4.67Nm and 85.30Nm and diameter of the shaft is 25.39mm. The machine is evaluated
using ‘Dura’ variety at moisture content; 12.00%, 11.10%, 10.20%, 9.60% and 9.00%, and ‘Tenera’ variety at;
12.00%, 11.00%, 10.00%, 9.10% and 8.20% moisture content. The performance of the machine shows that
throughput capacity increases from 625-1270 kg/hr for ‘Dura’ and also increases from 750-1200 kg/hr for
‘Tenera’. Mechanical damage reduces from 2.47-1.40% for ‘Dura’ and reduces from 1.16-0.20% for ‘Tenera’.
Functional efficiency increases from 92.30-96.40% for ‘Dura’ and increases from 95.50-99.07% for ‘Tenera’.
Quality performance efficiency increases from 91.00-95.30% for ‘Dura’ and increases from 95.50-98.80% for
‘Tenera’. The mean shearing force in ‘Dura’ is 31.10 ± 0.20N and that of ‘Tenera’ is 12.66 ± 0.20N.
Keywords - design, efficiency machine, palm kernel,
IRJET- Design and Analysis of Chain Drive Power Transmission from Station...IRJET Journal
This document describes the design and analysis of a chain drive power transmission system that can transmit power from a stationary source to oscillating devices. The system uses a modified chain with conical teeth that can automatically slide and lock into conical sockets on a driven wheel as the wheel oscillates between -45° and +45°. The design includes a chain section, driver section, and driven section. An analysis of the chain section was conducted using ANSYS software to evaluate stresses and ensure optimal performance. The results show this alternating transmission system can replace machines using multiple drives with a single drive and has applications where power needs to be transmitted to oscillating mechanisms.
This document provides an introduction to gears and gear trains. It defines common terms used in gears such as pitch circle, pitch diameter, pressure angle, addendum, and dedendum. It also classifies gears based on the position of shaft axes (parallel shaft gears include spur gears, helical gears, herringbone gears, bevel gears; intersecting shaft gears include straight bevel gears and spiral bevel gears). The document discusses advantages of gear drives such as transmitting exact velocity ratios and disadvantages such as requiring specialized manufacturing. It provides examples of different types of gears and their applications.
International Journal of Computational Engineering Research (IJCER) is dedicated to protecting personal information and will make every reasonable effort to handle collected information appropriately. All information collected, as well as related requests, will be handled as carefully and efficiently as possible in accordance with IJCER standards for integrity and objectivity.
ME6601 design of transmission systems university question bankMohan2405
This document provides sample questions and problems for various types of mechanical transmission systems, including flat belt drives, V-belt drives, chain drives, and wire rope drives. It contains 10 questions for each transmission type, with the questions ranging from design problems to component selection problems. The questions are from previous years' examinations for the ME6601 - Design of Transmission Systems course at Anna University and are organized by transmission type and year.
IRJET- Fabrication of Modified Electromagnetic Actuating BrakeIRJET Journal
The document describes the fabrication of a modified electromagnetic actuating brake system for a drum brake that uses two electromagnetic coils connected to the brake wires at different lengths to allow it to function as a regular brake. Testing showed that the second actuator stopped the wheel faster than the first actuator across different wheel speeds. The system aims to provide electromagnetic actuation of the brake while addressing disadvantages like battery drain by incorporating a thermoelectric generator.
The document summarizes a study on how the process of assembling the pivot bearing affects the natural frequency of actuator arms in hard disk drives. The experiment varied the inside diameter of actuator arms and measured the installation force and natural frequencies after assembling with pivot bearings and tolerance rings. Results showed modes 4 and 5 had significantly different frequencies that correlated with installation force and bore size. Finite element modeling agreed with experimental results. In conclusion, the pivot bearing assembly process, particularly the compressive force from tolerance rings, impacts some vibration modes of the actuator arm.
IRJET- Design and Fabrication of Job Weight Operated Material Handling EquipmentIRJET Journal
This document describes the design and fabrication of a job weight operated material handling equipment. It aims to reduce electricity consumption and costs associated with traditional powered material handling systems. The system uses the potential energy of materials/jobs being transported to power its motion from one point to another instead of electricity. Key components include a weight-carrying plate, chain/rack assembly, sprockets, wheels, frame, and springs. It operates by converting the vertical movement of the weighted plate into rotational motion of wheels via the chain/sprocket mechanism to move the equipment linearly on its track. Advantages include no electricity use, low cost, easy maintenance and operation. It has applications in transferring materials between stations or loading/unloading trucks to reduce
This document presents a static analysis of a non-spinning three-disc rotor system conducted using finite element analysis in ANSYS. Numerical results for deflection, bending moment, and stresses are obtained and compared to theoretical calculations. A rotor model with three rigid discs supported by bearings is simulated in ANSYS under fixed and simply supported boundary conditions. The numerical results closely match the theoretical values, validating the ANSYS model.
STATIC AND DYNAMIC ANALYSIS OF HIGH SPEED MOTORIZED SPINDLEIRJET Journal
This document analyzes the static and dynamic behavior of a high-speed motorized spindle used in computer numerical control (CNC) machining centers. A spindle model is created in ANSYS software and analyzed under static rotational loading and dynamic cutting forces. Modal analysis identifies the spindle's natural frequencies and mode shapes. Harmonic response analysis examines deflection under simulated cutting forces from 0-1400Hz. Testing is done for spindle materials EN24 and H13 under aluminum machining parameters. Results show maximum deflections of 0.016mm and 0.005mm under rotational and cutting loads for EN24. Natural frequencies up to 2754Hz are identified. The study provides data on spindle stiffness and vibrational behavior to improve machining
IRJET- Forced Damped Vibration Analysis of Optimized Cantilever Beam using Di...IRJET Journal
This document summarizes a study on analyzing the forced damped vibration of an optimized cantilever beam using different methods. The study aims to identify a suitable material for manufacturing an engine casing by considering parameters like material, weight, damping coefficient, spring stiffness, and natural frequency. Using the Taguchi method and regression analysis, aluminum is identified as the optimal material. The natural frequency is then evaluated using theoretical, experimental (FFT analyzer), and simulation (ANSYS) methods. Time graphs and FFT readings from the experimental setup show peak frequencies that match the theoretical natural frequency of 5.36 Hz calculated using analytical methods.
The document discusses modal analysis of a high-speed milling spindle. A finite element model of the spindle is created in ANSYS based on its specifications. Modal analysis of the model yields natural frequencies including 422 Hz. Experimental modal analysis using an FFT analyzer on a manufactured spindle specimen yields frequencies up to 401 Hz. Comparing the finite element and experimental results, 422 Hz is identified as the natural resonance frequency of the spindle, which is above the designed operating speed of 16,000 rpm. The modal analysis shows no resonance will occur during operation.
Gearbox Noise & Vibration Prediction and ControlIRJET Journal
This document discusses techniques for reducing noise and vibration in gearboxes. It begins by reviewing common sources of gearbox noise like transmission error between gear teeth and vibration transferred to surrounding structures. Next, it examines factors that influence gear noise like torque, speed, and tooth design properties. Methods for analyzing noise like determining transmission error and time-varying gear mesh stiffness are presented. The goal is to minimize excitations from meshing gears that cause vibration of the gearbox casing and radiate noise.
Stress and Vibration Analysis of Turbine RotorIRJET Journal
This document summarizes the design and analysis of a turbine rotor intended to operate at speeds between 30,000-50,000 RPM. It discusses:
- Designing a blisk rotor using axi-symmetric modeling for stress analysis and optimization.
- Material selection for the rotor, with titanium alloy found to reduce thermal stresses compared to nickel alloy.
- Dynamic analysis showing the first critical speed to be 34,176 RPM, well above the operating speed.
- Stress analysis of the optimized rotor design found highest stresses of 451 MPa to be below the material yield strength.
- The rotor design was concluded to withstand the intended operating stresses and speeds.
To develop algorithm to create node at desired location on beam using absorberIRJET Journal
This document presents a study on developing an algorithm to reduce handle vibrations of a grass trimmer by imposing nodes at desired locations on the trimmer pipe using a variable stiffness vibration absorber. The grass trimmer is modeled as a free-free beam with lumped masses representing the engine, cutter head, and handle. An algorithm is developed based on the beam's equations of motion to iteratively find the absorber frequency required to impose a node and minimize vibration at the handle location. Numerical simulations and experimental tests are conducted to validate the effectiveness of the proposed method in suppressing vibrations at the handle by over 75%.
The document analyzes the modal characteristics of a Vibro Ripper gear through 3D modeling and finite element analysis in CATIA. It finds that the natural frequency and modal shapes change with increasing gear speed due to centrifugal stiffening effects. The radius and thickness of the gear's block also impact the natural frequency, with radius having a more complex influence. The natural frequency generally increases with greater block thickness, indicating higher gear stiffness.
This document summarizes research on vibrations that occur during chip removal mechanical processing. It discusses the types of vibrations that can appear, including forced vibrations caused by external factors and self-excited vibrations caused by factors related to the cutting process itself. The document presents theories on modeling the vibratory movement of the cutting tool as an oscillating system. Equations are provided that describe the oscillation frequency, amplitude, phase angle, and amplitude ratio based on parameters like the cutting force, tool and workpiece geometry, and system stiffness. The energy consumed in maintaining vibratory movement is also analyzed. Causes of self-excited vibrations are explored, and how vibrations can affect surface quality is described.
Effect of gear design variables on the dynamic stress of multistage gearsAlexander Decker
The document describes a numerical model developed to simulate and optimize the dynamic stress of multistage spur gears. The model considers three design variables: module, pressure angle, and contact ratio. Simulation results showed that increasing module and decreasing pressure angle and contact ratio can increase dynamic stress levels. A module of 2.5 and contact ratio of 2.0 were found to yield the lowest dynamic stresses for the given multistage gear train design. The model can be used as a tool to determine optimal gear design parameters for minimizing dynamic stresses.
11.effect of gear design variables on the dynamic stress of multistage gearsAlexander Decker
This document presents a numerical model to simulate and optimize the dynamic stress of multistage spur gears. The model considers time-varying mesh stiffness and frictional torque. It was used to study the effects of three gear design variables - module, pressure angle, and contact ratio - on dynamic stress. Increasing the module increased stress levels, while a pressure angle of 25 degrees and contact ratio of 2.0 reduced stresses the most for the gear train studied. The model can be used as a tool to obtain optimal design parameters for a given multistage gear train.
Misalignment of shaft in rotating systems is one of the most common faults. Improper aligning of shafts through couplings often leads to severe vibration problems in many rotating machines. Vibration monitoring is a useful technique which provides valuable information regarding symptoms of machinery failures, and in turn may avoid costly breakdowns. In the present paper experiment investigation of parallel misalignment in rotating machinery is presented. by Mr. Bhawthankar A. A, Mr. Mane M. B, Mr. Phopale Y. A and Mr. Korshetti V. V 2018. EFFECT OF PARALLEL MISALIGNMENT IN ROTATING MACHINERY. International Journal on Integrated Education. 1, 1 (Dec. 2018), 82-84 https://journals.researchparks.org/index.php/IJIE/article/view/789/758 https://journals.researchparks.org/index.php/IJIE/article/view/789
Sanjiv Kumar "Vibration Signature Analysis of 4 Jaw Flexible Coupling Considering Misalignment in Two Planes.", International Research Journal of Engineering and Technology (IRJET), Vol2,issue-01 March 2015. e-ISSN:2395-0056, p-ISSN:2395-0072. www.irjet.net
Abstract
Misalignment and unbalancing are the most possible causes of machine vibrations. A misaligned rotor always causes more vibration and generates excessive force in the bearing area and reduces the life of the machine. Coupling misalignment is a condition where the shaft of the driver machine and the driven machine are not on the same centerline. The non-coaxial condition can be parallel misalignment or angular misalignment. The more common condition is a combination of the two in both the horizontal and vertical direction. We are forced into this situation of coupling alignment because equipment from different suppliers must be mated together. Misalignment is temperature dependent. All materials expand with increasing temperature, and metal is no exception. Motors warm up several degrees, and the driven machine may warm up or cool down from ambient depending on the fluid it is handling. Understanding and practicing the fundamentals of rotating shaft parameters is the first step in reducing unnecessary vibration, reducing maintenance costs and increasing machine uptime. By the term two planes in our work, we mean that two rotors are used for the analysis of misaligned vibrations. If only one rotor is used then this system is called a single plane system. In this paper, experimental studies were performed on a 2 rotor dynamic test apparatus to predict the vibration spectrum for rotor misalignment. A 4 Jaw flexible coupling was used in the experiments. The rotor shaft accelerations were measured at rotor speed of 30 Hz i.e. 1800 RPM using accelerometer and a Dual Channel Vibration Analyzer (DCVA) under the aligned (baseline) and misaligned conditions. The experimental frequency spectrum was also obtained for both baseline and misaligned condition under different misaligned forces. The experimental results of aligned and misaligned rotors are compared at two different rotor locations.
COMPARISON OF RESPONSE TO UNBALANCE OF OVERHUNG ROTOR SYSTEM FOR DIFFERENT SU...IAEME Publication
Rotor unbalance is most common fault found in the rotating machines. Methods
are adopted to analyze the position of unbalance and to bring its effect into acceptablelimit. Vibration analysis is the most common technique used to analyze the rotor
system. Research have been performed on rotor supported atboth ends, however lessstudy has been done for overhung rotor. In this paper the response of overhung rotoron isotropic support and anisotropic support subject tounbalance has been presented.and equations aresolved using MATLAB programming. The effect of unbalancehas been studied on thebode plot. Forward and Reverse whirl are observed through Campbell diagram andmode shapes are plotted.
The document provides an overview of rotor system dynamics and modeling. It defines key concepts like critical speeds, lateral and torsional vibration, stability analysis, and the Campbell diagram. The document also describes modeling approaches like the Jeffcott rotor and analyzing rotor response through modal, harmonic, and transient analysis. Key causes of rotor vibration like unbalance and methods to monitor rotor health are discussed.
Design, Optimization and Analysis of a Radial Active Magnetic Bearing for Vib...ijtsrd
The most important aim of the project is to make use of the active vibration control technique to reduce vibration in composite shaft system using three nodded beam element. The fiber reinforced polymer FRP composite shaft is deliberate in this paper considering it as a Timoshenko beam. Three dissimilar isotropic rigid disks are mounted on it and also supported by two active magnetic bearings at its split ends. The work involves finite element, vibration and rotor dynamic analysis of the structure. Rotary inertia effect, gyroscopic effect kinetic energy and strain energy of the shaft are derived and studied. The governing equation is obtained by applying Hamilton's principle using finite element method in which four degrees of freedom at each node is considered. Active control scheme is applied through magnetic bearings by using a controller containing low pass filter, notch filter, sensor and amplifier which controls the current and correspondingly control the stability of the whole rotor shaft system. Campbell diagram, steadiness limit speed diagram and logarithmic decrement diagram are considered to establish the system stability. Effect of different types of stacking sequences are also studied and compared Jay Krishn Yadav | H. S. Sahu ""Design, Optimization and Analysis of a Radial Active Magnetic Bearing for Vibration Control"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-3 | Issue-4 , June 2019, URL: https://www.ijtsrd.com/papers/ijtsrd24040.pdf
Paper URL: https://www.ijtsrd.com/engineering/mechanical-engineering/24040/design-optimization-and-analysis-of-a-radial-active-magnetic-bearing-for-vibration-control/jay-krishn-yadav
FEA Simulation for Vibration Control of Shaft System by Magnetic Piezoelectri...IOSR Journals
1) The document describes a finite element analysis simulation of a shaft system to evaluate the effectiveness of magnetic piezoelectric control mounts for vibration damping.
2) The shaft is 200mm long, rotates at 700rpm, and is subjected to a hammer load of 220N. Modal and harmonic analyses are conducted with and without control mounts.
3) The results show that with control mounts, natural frequencies are reduced to 2-9Hz from 2000-9000Hz, deformation is reduced by 60%, amplitude is reduced by 98%, and vibration is damped by 99%, demonstrating the control mounts are an effective vibration damping method.
1) The document describes a finite element analysis simulation of a shaft system to evaluate the effectiveness of magnetic piezoelectric control mounts for vibration damping.
2) The shaft is 200mm long, rotates at 700rpm, and is subjected to a hammer load of 220N. Modal and harmonic analyses are conducted with and without control mounts.
3) The results show that with control mounts, natural frequencies are reduced to 2-9Hz from 2000-9000Hz, deformation is reduced by 60%, amplitude is reduced by 98%, and vibration is damped by 99%, demonstrating the control mounts are an effective vibration damping method.
FEA Simulation for Vibration Control of Shaft System by Magnetic Piezoelectri...IOSR Journals
1) The document describes a finite element analysis simulation of a shaft system to evaluate the effectiveness of magnetic piezoelectric control mounts for vibration damping.
2) The shaft is 200mm long, rotates at 700rpm, and is subjected to a hammer load of 220N. Modal and harmonic analyses are conducted with and without control mounts.
3) The results show that with control mounts, natural frequencies are reduced to 2-9Hz from 2000-9000Hz, deformation is reduced by 60%, amplitude is reduced by 98%, and vibration is damped by 99%, demonstrating the control mounts are an effective vibration damping method.
Similar to Modelling and simulation of single rotor system (20)
Lithological Investigation at Tombia and Opolo Using Vertical Electrical Soun...IJLT EMAS
Vertical electrical soundings (VES) was carried out in Opolo and Tombia all in Yenagoa local government area, Bayelsa state, Nigeria to understand the resistivity distribution of its subsurface which serves as a tool in investigating subsurface lithology. All VES sounding were stacked together to generate 1D pseudo tomogram and was subsequently interpreted. The interpreted VES curve results shows that Opolo consists of three layers within the depth of investigation. Sandy clay with mixture of silt make up the first layer (Top layer) with resistance value ranging from 24-63Ωm. The second layer is made up of thick clay with very low resistivity values ranging from 3-19Ωm. The third layer is sandyclay with its resistance value ranging from 26-727Ωm.Tombia also reveals that the area is in three layers within the depth of investigation. Sandy clay with a mixture of fine sand made up the first layer (Top soil) with its resistance values ranging from 40-1194Ωm. The second layer is made up of fine sand with resistivity value ranging from 475-5285Ωm. The third layer is made up of sandy clay/sand with its resistance value ranging from 24-28943Ωm.The results of the 1D pseudo tomogram also reveals that Tombia and Opolo consists of three layers within the depth of investigation and pseudo tomograms serves as a basis tool for interpreting lithology and identifying lithological boundaries for the subsurface
Public Health Implications of Locally Femented Milk (Nono) and Antibiotic Sus...IJLT EMAS
The study is to determine the PH and moisture content
of Nono sold in Port Harcourt , the prevalence of Pseudomonas
aeruginosa in Fura da nono and finally the antibiotic resistance
pattern of Pseudomonas aeruginosa isolated from the fermented
products. nono samples were purchased from Borikiri in
portharcourt township. A total of 20 samples were assessed to
determine their microbiological quality and to conduct antibiotic
susceptibility test. Moisture content and pH of the samples were
also assessed. Enumeration of the total viable bacterial count
(TVBC), Total coliform count (TCC) and Total Pseudomonal
count (TPC) were also assessed to determine the sanitary quality
of the product. The PH ranges between 2.99 to 3.89 while the
moisture content ranges between 80% to 88%. The result
obtained from the microbial culture indicated that a wide array
of microorganism were present in Fura da nono including species
of Bacilu, klebsiella, Pseudomonas Staphylococcus aureus,
Streptococcus, Lactobacillus and Escherichia coli.. The highest
TVBC, TCC and TPC were 9.8x103
cfu/ml, 10x103
cfu/ml and
9.7x103
cfu/ml respectively. Antibiotic susceptibility was
conducted using 12 broad spectrum antibiotics and compared
against a standard provided by the Clinical laboratory standard
institute (CLSI). Gentamycin, Ofloxacin and Levofloxacin
recorded 100% resistance , while Cotrimoxazole, Ciprofloxacin,
Vancomycin, Nitrofurantoin, Norfloxacin and Azithromycin
recorded 100% susceptibility as indicated by the complete clear
zone of inhibition.It was discovered that the absence of
regulatory agencies like National Agency for Food Drug
Administration and Control (NAFDAC) in the regulation of the
quality of the product was the cause of the high contamination,
since there were no quality control measures in its production
line .It was recommended that NAFDAC should provide a
standard operating procedure for local food producers and
should include them in their scope for regulation.
Bioremediation Potentials of Hydrocarbonoclastic Bacteria Indigenous in the O...IJLT EMAS
Hydrocarbon pollution Remediation by Enhanced
Natural Attenuation method was adopted to remediate the
hydrocarbon impacted site in Ogoniland Rivers State, Nigeria .
The research lasted for 6 months. Samples were collected at
monthly intervals . samples were collected intermittently
between Feb 2019 to July 2019 . Mineral salt medium containing
crude oil was used as a sole source of carbon and energy for the
isolation of hydrocarbonoclastic bacteria. Samples were
collected from the four (4) local government that made up
Ogoniland and they includes Khana(k), Gokana (G),Tai (T),
Eleme (E) and transported immediately to the laboratory for
analysis. The microbial and physicochemical properties of the
soil samples varied with the different local government areas.
Seven bacteria genera were isolated from the samples from the
four locations, viz, Pseudomonas, Lactobacter, Micrococcus,
Arthrobacter, Bacillus, Brevibacterium and Mycobacterium
were isolated and identified. the seven isolate were indigenous in
the study area. Nutrient were added to identified plots of
hydrocarbon pollution polluted site within the four local
government and they were able degrade hydrocarbon within a
short of period of time. Reassessment of physicochemical
parameter impacted site was used to judge the bioremediation
potentials of microorganism
Comparison of Concurrent Mobile OS CharacteristicsIJLT EMAS
It is challenging for the mobile industry to supply the best features of the devices with its increasing customer requirements. Among the progress of technologies, the mobile industry is the fastest growing; as it keeps pace with rapidly changing market demands. This paper compares between the currently available mobile devices based on its user interface, security, memory utilization, processor, and device architecture. The mobile products launched from 2015-19 are used for comparison. Current results after comparison with earlier study found that many mobile devices and features became obsolete in a short time span supporting the aggressive growth of mobile industry.
Design of Complex Adders and Parity Generators Using Reversible GatesIJLT EMAS
This paper shows efficient design of an odd and even parity generator, a 4-bit ripple carry adder, and a 2-bit carry look ahead adder using reversible gates. Number of reversible gates used, garbage output, and percentage usage of outputs in implementing each combinational circuit is derived. The CLA used 10 reversible gates with 14 garbage outputs, with 50% percentage performance usage.
Design of Multiplexers, Decoder and a Full Subtractor using Reversible GatesIJLT EMAS
This paper shows an effective design of combinational circuits such as 2:1, 4:1 multiplexers, 2:4 decoder and a full subtractor using reversible gates. This paper also evaluates number of reversible gates used and garbage outputs in implementing each combinational circuit.
Multistage Classification of Alzheimer’s DiseaseIJLT EMAS
Alzheimer’s disease is a type of dementia that destroys
memory and other mental functions. During the progression of
the disease certain proteins called plaques and tangles get
deposited in hippocampus which is located in the temporal lobe
of brain. The disease is not a normal part of aging and gets
worsen over time. Medical imaging techniques like Magnetic
Resonance Imaging (MRI), Computed Tomography (CT) and
Positron Emission Tomography (PET) play significant role in the
disease diagnosis. In this paper, we propose a method for
classifying MRI into Normal Control (NC), Mild Cognitive
Impairment (MCI) and Alzheimer’s Disease(AD). An overall
outline of the methodology includes textural feature extraction,
feature reduction process and classification of the images into
various stages. Classification has been performed with three
classifiers namely Support Vector Machine (SVM), Artificial
Neural Network (ANN) and k-Nearest Neighbours (k-NN)
Design and Analysis of Disc Brake for Low Brake SquealIJLT EMAS
Vibration induced due to friction in disc brake is a
theme of major interest and related to the automotive industry.
Squeal noise generated during braking action is an indication of
a complicated dynamic problem which automobile industries
have faced for decades. For the current study, disc brake of 150
cc is considered. Vibration and sound level for different speed
are measured. Finite element and experimentation for modal
analysis of different element of disc brake and assembly are
carried out. In order to check that precision of the finite element
with those of experimentation, two stages are used both
component level and assembly level. Mesh sensitivity of the disc
brake component is considered. FE updating is utilized to reduce
the relative errors between the two measurements by tuning the
material. Different viscoelastic materials are selected and
constrained layer damping is designed. Constrained layer
damping applied on the back side of friction pads and compared
vibration and sound level of disc brake assembly without
constrained layer damping with disc brake assembly having
constrained layer. It was observed that there were reduction in
vibration and sound level. Nitrile rubber is most effective
material for constrained layer damping.
The aim of this article is to device strategies for
establishing and managing tomato processing industry, which
aims to enhance the taste experiences on different tomato
products for the people. Management needed for a successful
business is analyzed in each and every aspect. The five important
steps in management- planning, organizing, staffing, leading and
controlling are applied in management of the industry. Planning-
In the planning process, activities required to achieve desired
goals are thought about. This process involves the creation and
maintenance of a plan, those include psychological aspects that
require conceptual skills. Organizing- Organizing is a systematic
processing in order to attain objectives of structuring,
integrating, co-ordinating task, and activities. Staffing- Staffing is
the process of acquiring, deploying, and retaining a workforce of
sufficient quantity and quality to create positive impacts on the
organization’s effectiveness. Leading- Communicating,
motivating, inspiring and encouraging employees are key aspects
of process of leading, task of which is towards a higher level of
productivity of organization. Controlling- Controlling measures
the deviation of actual performance from the standard
performance, discovers the causes of such deviations and helps in
taking corrective actions.
This paper deals with the functioning of a Propylene
Recovery Unit (PRU) in a chemical industry and the various
Managerial and Human Resource considerations that need to be
accounted for, in this process. This report discusses various
aspects that are to be considered, before initializing the setup of
PRU, ranging from a Management perspective. Mission and
objective was decided and subsequently the managerial model
was developed. Propylene is an indispensible raw material that
has a variety of end use. A detailed analysis pertaining to
propylene demand in the market along with major sources has
been incorporated in this paper. Emphasis has been placed on
the type of departmentation required. Managerial aspects of
various functions ranging from warehousing to quality control
have also been taken into consideration. Delegations of functional
departments have been defined to prevent redundancy of duties
and major managerial functions of Planning, Organizing,
Staffing, Leading and Controlling has also been discussed.
Internal and External factors that affect the company have been
analyzed through SWOT Analysis and MBO strategies are also
broadly classified. Finally, Total Quality Management and
strategies for adoption of Lean Manufacturing as also touched
upon briefly.
This business model is intended to provide an online
platform connecting the general public customers with the
producers of groceries and food products such as fruits,
vegetables, meat and dairy products. The producers are selected
based on their production methods and their quality. The model
obtains the demand from the customers and the supply is found
from the producers. The prices of the products are fixed
according to the supply and demand. The customers' orders can
be classified into two different categories: 1. Bulk orders and 2.
Recipe based. The orders are obtained in a bulk quantity or for a
certain period of time and the products are delivered
periodically as per the customer's need. This model eliminates
the requirements of conventional storage units and also controls
the quality of the products using scientific devices. This model
reduces the wastage of resources as it enables the customer to
estimate their requirements using the help of recipe based
ordering system and also keeps the price constant for the bulk
orders.
Home textile exports are market driven, which implies that they deal with what the foreign market wants and how the home textile exporter could fulfil it, or product driven, where they deal with what the exporter has to offer and how can an appropriate strategy be applied to find the targeted buyers in the foreign market. The requisites of these are that the exporter must know the export plan, production procedure and export documentations. Exporter also must know his/her operational capacity, organizational nature and structure. An attempt is made in this project to understand and examine the nature and structure of the organization of the S3P exports.
Almost 80% of the population are coffee lovers.
Kaffinite sunshine café is guaranteed to become the daily
necessity for all the coffee addicts. A place with good ambience
where people can escape from their daily stress and cherish with
a morning cup of coffee. Our café offers home style delicious
breakfast and snacks. We focus on finding the most aromatic
and exotic coffee beans. We have our branches in many cities of
Tamil Nadu. We have a romantic ambience which attracts youth.
Our café has spectacular interior designs with stupendous taste
of coffee. We have attached our menu which contains multicuisines
at attractive prices. In this paper, we have done SWOT
analysis of our café to know our strengths and weaknesses. We
have also analyzed our opportunities and threats from the
external environment
Management of a Paper Manufacturing IndustryIJLT EMAS
This project focuses on how a paper manufacturing industry looks like and how it operates. For better understanding purpose, we have taken a hypothetical situation here. We have discussed on various factors that are to be considered before constructing a plant. For example, what kind of proprietorship is suitable for this case? We have developed a SWOT Analysis for the plant, thinking about the pros and cons. This project can be a guide for a person who is willing to start up a new manufacturing plant. This report can be used to streamline your approach to planning by outlining the responsibilities of plant managers and external factors, as well as identifying appropriate resources to assist you with the construction of plant.
Application of Big Data Systems to Airline ManagementIJLT EMAS
The business world is in the midst of the next
revolution following the IT revolution – the Big Data revolution.
The sheer volume of data produced is a major reason for the big
data revolution. Aviation and aerospace are typical areas that
can apply big data systems due to the scale of data produced, not
only by the plane sensors and passengers, but also by the
prospective passengers. Data that need to be considered include,
but are not limited to, aircraft sensor data, passenger data,
weather data, aircraft maintenance data and air traffic data.
This paper aims at identifying areas in aviation where big data
systems can be utilized to enhance operational performances
improve customer relations and thereby aiding the ultimate goal
of increased profits at reduced costs. An improved management
model built on a strong big data infrastructure will reduce
operation costs, improve safety, bring down the cost and time
spent on maintenance and drastically improve customer
relations.
Impact of Organisational behaviour and HR Practices on Employee Retention in ...IJLT EMAS
I. INTRODUCTION
Roads are constituted as the most significant component of
India‟s Logistics Industry, accounting for 60 percent of
the total freight movement in the country. A majority of
players in this industry are small entrepreneurs running their
family businesses. As a result, Man Power Development
Investments that pay off in the longer term, have been
minimised respectively. Moreover, these businesses are
typically controlled severely by the proprietor and his / her
family and consequently, making it unattractive for the
professionals. Poor working conditions, Low pay scales
relative to alternate careers, poor or non-existent Manpower
Policies and prevalence of unscrupulous practices have added
to the segment's woes for seeking employment. Thus, it could
be rightly stated that the Transportation, Logistics,
Warehousing and Packaging Sector is considered an
unattractive career option and fails to attract and retain skilled
manpower. Many Organizations have failed to recognize that
Human Resources play an important role in gaining an
immense advantage in today‟s highly competitive Global
Business Environment. While all aspects of managing Human
Resources is important, Employee Retention continues to be
an essential part of Human Resource Management activity
that help the Organizations to achieve their goals and
objectives.
Sustainable Methods used to reduce the Energy Consumption by Various Faciliti...IJLT EMAS
The purpose of this article is to identify the energy
challenges faced by airports especially with regards to the energy
consumed by the terminal building and suggest suitable energy
conservation techniques based on what has already been
implemented in few airports around the world.
We have identified the various facilities and systems which are
responsible for a major share of the consumption of energy by
airport terminals and we have suggested measures to effectively
overcome these problems.
Cake Walk is India's largest confectionery manufacturer known for innovative candy products. It aims to expand globally while contributing positively through social initiatives. The document discusses Cake Walk's vision, products, marketing environment analysis including PESTEL, SWOT and competitive strategies. Market research methods like blind testing and surveys are used to develop new products and improve existing ones. Cake Walk targets a wide customer segment with its diverse product range and strong brand image.
This document discusses the planning and organization of a tours and travel company called MACH Tours and Travels. It begins by outlining their mission and vision, which is to provide enjoyable and memorable experiences for customers by focusing on ease, luxury, quality time, and value. It then provides details on their planning process, including developing customized packages to meet different customer needs. It also discusses their application of Henri Fayol's management principles and considers decision making, risk management, organizational structure, and the business environment factors affecting the tourism industry.
The purpose of this paper is to highlight the general
terms and definitions that falls under the ‘common set’ in the
intersection of the sets Meteorology and Aerospace Engineering.
It begins with the universal explanations for the meteorological
phenomena under the ‘common set’ followed by the
categorization of clouds and their influences on the aerial
vehicles, the instrumentation used in Aeronautics to determine
the required Meteorological quantities, factors affecting aviation,
effects of aviation on the clouds, and the corresponding protocols
involved in deciphering the ‘common set’ elements.
It also talks about the relation between airport construction and
Geology prior to concluding with the uses and successes of
Meteorology in the field of Aerospace.
Optimizing Gradle Builds - Gradle DPE Tour Berlin 2024Sinan KOZAK
Sinan from the Delivery Hero mobile infrastructure engineering team shares a deep dive into performance acceleration with Gradle build cache optimizations. Sinan shares their journey into solving complex build-cache problems that affect Gradle builds. By understanding the challenges and solutions found in our journey, we aim to demonstrate the possibilities for faster builds. The case study reveals how overlapping outputs and cache misconfigurations led to significant increases in build times, especially as the project scaled up with numerous modules using Paparazzi tests. The journey from diagnosing to defeating cache issues offers invaluable lessons on maintaining cache integrity without sacrificing functionality.
artificial intelligence and data science contents.pptxGauravCar
What is artificial intelligence? Artificial intelligence is the ability of a computer or computer-controlled robot to perform tasks that are commonly associated with the intellectual processes characteristic of humans, such as the ability to reason.
› ...
Artificial intelligence (AI) | Definitio
Embedded machine learning-based road conditions and driving behavior monitoringIJECEIAES
Car accident rates have increased in recent years, resulting in losses in human lives, properties, and other financial costs. An embedded machine learning-based system is developed to address this critical issue. The system can monitor road conditions, detect driving patterns, and identify aggressive driving behaviors. The system is based on neural networks trained on a comprehensive dataset of driving events, driving styles, and road conditions. The system effectively detects potential risks and helps mitigate the frequency and impact of accidents. The primary goal is to ensure the safety of drivers and vehicles. Collecting data involved gathering information on three key road events: normal street and normal drive, speed bumps, circular yellow speed bumps, and three aggressive driving actions: sudden start, sudden stop, and sudden entry. The gathered data is processed and analyzed using a machine learning system designed for limited power and memory devices. The developed system resulted in 91.9% accuracy, 93.6% precision, and 92% recall. The achieved inference time on an Arduino Nano 33 BLE Sense with a 32-bit CPU running at 64 MHz is 34 ms and requires 2.6 kB peak RAM and 139.9 kB program flash memory, making it suitable for resource-constrained embedded systems.
Introduction- e - waste – definition - sources of e-waste– hazardous substances in e-waste - effects of e-waste on environment and human health- need for e-waste management– e-waste handling rules - waste minimization techniques for managing e-waste – recycling of e-waste - disposal treatment methods of e- waste – mechanism of extraction of precious metal from leaching solution-global Scenario of E-waste – E-waste in India- case studies.
Advanced control scheme of doubly fed induction generator for wind turbine us...IJECEIAES
This paper describes a speed control device for generating electrical energy on an electricity network based on the doubly fed induction generator (DFIG) used for wind power conversion systems. At first, a double-fed induction generator model was constructed. A control law is formulated to govern the flow of energy between the stator of a DFIG and the energy network using three types of controllers: proportional integral (PI), sliding mode controller (SMC) and second order sliding mode controller (SOSMC). Their different results in terms of power reference tracking, reaction to unexpected speed fluctuations, sensitivity to perturbations, and resilience against machine parameter alterations are compared. MATLAB/Simulink was used to conduct the simulations for the preceding study. Multiple simulations have shown very satisfying results, and the investigations demonstrate the efficacy and power-enhancing capabilities of the suggested control system.
cnn.pptx Convolutional neural network used for image classication
Modelling and simulation of single rotor system
1. International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)
Volume VI, Issue IV, April 2017 | ISSN 2278-2540
www.ijltemas.in Page 163
Modelling and Simulation of Single Rotor System
Amit. Malgol1
, Yogita. Potdar2
1
M. Tech, Department of Mechanical Engineering, GIT, Belgavi, Karnataka, India.
2
Assistant Professor, Department of Mechanical Engineering, GIT, Belgavi, Karnataka, India
Abstract: - This paper presents study of rotor shaft system for
three different position of the disk, for a simply supported case
and it is important to determine natural frequency, critical
speeds and amplitudes of rotor system. This characteristic are
found by using ANSYS parametric design tool. Modal, harmonic
and transient cases are carried out for the single rotor system.
The results obtained for this analysis are useful for design of
rotor system. The results obtained from analytical method have
close agreement with the results obtained from ANSYS results.
Keywords: - Rotor, natural frequency, critical speeds, amplitudes,
damping.
I. INTRODUCTION
otor dynamics is branch of physics which deals with
study of behaviour of rotating systems under application
of dynamic forces. Rotor is part of system i.e. disks, blades or
couplings mounted on shaft is called as rotor. Rotor is used to
convert one form of energy into another form hence rotational
energy must be maximum, so we must reduce vibrational
energy as much as possible, so they have wide range of
applications in many industries as well as household
applications so we need to analyse the system to prevent
catastrophic failures. Applications such as centrifugal pumps,
generators, motors, compressors, blowers, sewing machine,
steam turbines, gas turbines, aero engines, main and tail rotors
of helicopters. In rotating system flexural vibrations are main
cause as compared to torsional vibration and axial vibration.
Unbalance in rotor gives raise to forces and moments in rotor
this generates flexural vibration in rotor. The vibrations
perpendicular to the axis of rotation such vibrations are known
as flexural vibrations. Whirling is one of the main cause for
failures of rotating systems due unbalance of rotor i.e. due the
manufacturing defects centre of gravity of shaft doesn’t
coincides with axis of rotation, misalignment of rotor shaft
and bearings, due to loose supports or if the machine is
operated at critical speeds may lead to catastrophic failure of
system.
Generally rotors rotate at high speeds, when the natural
frequency of system is equal to the critical speed resonance
occur. Resonance is most common problem in rotating
systems. In rotating system if there is some percentage of
vibration in machine, these vibrations are magnified by
resonance. At these critical speeds the amplitudes of vibration
goes on increasing this cause rotor to bend and twist so this
cause rubs or wear and tear and collide with adjacent parts of
system hence excessive force are developed and hence leads
to failure. So determination natural frequency, critical speeds
and amplitudes of vibrations are very important in rotor
dynamics. As a designer by changing mass, stiffness, position
of disk etc. such design modification to change critical speeds
of system so as to operate in a suitable environment. To
reduce whirling amplitudes, we must avoid rotating at critical
speeds of the system or squeeze film damper is suitable. By
using damper whirling amplitudes are reduced as well as
reduces forces on the supports.
II. METHODOLOGY
2.1 ANSYS
The rotor model consist of shaft and disk modelled in ANSYS
by considering Beam 2D elastic element and two sets of real
constants for shaft and disc are considered, by creating four
key points and drawing straight line, as per shaft and disc real
constants sets are selected for lines created. To create rotor
model table 2.1 and 2.2 data of material properties and
dimensions are considered. Figure 2.3 shows the rotor model.
Table 2.1: Material properties of rotor
S.NO Parameters Value
1 Shaft and disk material Mild steel
2 Young’s modulus (E) 2 ⁄
3 Density ( ) 7800 ⁄
4 Poisson’s ratio ( ) 0.33
Table 2.2: Dimensions of disk and rotor
S.NO Parameters Value
1 Diameter of shaft (d) 0.01
2 Diameter of disk (D) 0.15
3 Thickness of disk (t) 0.01
4 Length of shaft ( ) 0.4
5 Mass of disk ( )
Figure 2.3: Rotor model in ANSYS
R
2. International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)
Volume VI, Issue IV, April 2017 | ISSN 2278-2540
www.ijltemas.in Page 164
2.2 Modal analysis of rotor in ANSYS
In modal analysis, three different disk positions are considered
to determine natural frequencies and respective mode shapes
at this natural frequency and critical speeds at this three
different disk position for a simply supported rotor.
2.21 For disk position a = 0.2 and b = 0.2
Figure 2.4: Mode 1 for a = 0.2 and b = 0.2
Figure 2.5: Mode 2 for a = 0.2 and b = 0.2
2.22 For disk position a = 0.133 and b = 0.267
Figure 2.6: Mode 1 for a = 0.133 and b = 0.267
Figure 2.7: Mode 2 for a = 0.133 and b = 0.267
2.23 For disk position a = 0.066 and b = 0.334
Figure 2.8: Mode 1 for a = 0.066 and b = 0.334
Figure 2.9: Mode 2 for a = 0.066 and b = 0.334
2.3 Frequency responses of rotor in ANSYS
2.31 For disk position a = 0.2 and b = 0.2
3. International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)
Volume VI, Issue IV, April 2017 | ISSN 2278-2540
www.ijltemas.in Page 165
Figure 2.10: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0
Figure 2.11: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.0073265
Figure 2.12: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.091235
Figure 2.13: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.1748
Figure 2.14: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.2
2.32 For disk position a = 0.133 and b = 0.267
Figure 2.15: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0
4. International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)
Volume VI, Issue IV, April 2017 | ISSN 2278-2540
www.ijltemas.in Page 166
Figure 2.16: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.0073265
Figure 2.17: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.091325
Figure 2.18: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.1748
Figure 2.19: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.2
2.33 For disk position a = 0.066 and b = 0.334
Figure 2.20: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0
Figure 2.21: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.0073265
5. International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)
Volume VI, Issue IV, April 2017 | ISSN 2278-2540
www.ijltemas.in Page 167
Figure 2.22: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.091325
Figure 2.23: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.1748
Figure 2.24: Variation of amplitudes of vibration with operating frequency of
rotor system at damping ratio = 0.2
2.4 Transient response
In transient vibration, the amplitudes of vibration goes on
decreasing. Transient response of rotor system in ANSYS for
disk position a = 0.066, b = 0.334 is carried out. A time
dependent force for is considered, a force of 100N is applied
on the disk for 1ms hence time history post processor in
ANSYS is used to plot displacement versus time for rotor
system is plotted. Figure 2.20 shows the variation of
displacement with time of rotor system under a case of time
dependent load.
Figure 2.20: Variation of displacement with time of rotor system
III. NUMERICAL METHOD
Let us consider a single rotor shaft system, the equation of
motion and natural frequency of vibration can be derived
using newton’s method, energy method or Rayleigh’s method.
The equation of motion of undamped free vibration is given
Where is stiffness and is mass of the disk. Natural
frequency of free vibration is given
√
Equivalent mass for simply supported beam carrying disk of
mass at middle where, is mass of shaft and is mass of
disk.
Equivalent stiffness for simply supported rotor with disk at
middle where is young’s modulus of rotor material, is
moment of inertia and is length of shaft
Stiffness for disk offset position is given by
For case damped forced vibration,
( )
6. International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)
Volume VI, Issue IV, April 2017 | ISSN 2278-2540
www.ijltemas.in Page 168
On solving equation (3) we get the amplitudes of vibration
√( ) ( )
Where is Natural frequency of the system, is force
applied on the disk, is forcing frequency, is the damping
ratio and is the amplitudes of vibration.
Deflection of simply supported rotor with disk offset position
is given by
Natural frequency for simply supported rotor with disk offset
√
According to dunkerley’s method, Natural frequency of free
transverse vibration
√
According to Rayleigh’s method lowest natural frequency
given by
√
∑
∑
Where : total static deflection
Where : influence co-efficient
IV. RESULT
Table 4.1: Comparison of analytical results and ANSYS
results
SI.No Disk position Critical speeds
( rpm )
Natural frequencies
( Hz )
a
( )
b
( )
Analytical
method
ANSYS Analytical
method
ANSYS
1 0.2 0.2 2208 2201.64 36.80 36.694
2 0.133 0.267 2487 2431.08 41.45 40.518
3 0.066 0.334 3345.6 3383.04 55.76 56.348
Table 4.2: ANSYS Results
SI.No Disk position Amplitudes of vibration ( )
a
( )
b
( )
=0 =0.1748
1 0.2 0.2 0.92 8.8977 8.85034 5.6236 3.34862 3.13305
0.94 0.0139523 0.0137719 6.41135 3.5963 3.144
2 0.133 0.267 0.92 5.963 5.94 4.53092 2.77307 2.43602
0.94 8.22429 8.164 5.0349 2.82603 2.47163
3 0.066 0.3
44
0.92 2.70538 2.69096 1.80246 1.08735 4.07223
0.94 3.53928 3.50708 1.93959 1.09244 0.955360
Table 4.3: Analytical Results
SI.No
Disk position Amplitudes of vibration ( )
a
( )
b
( )
=0 =0.1748
1
0.2 0.2
0.92
8.8420 8.8079 5.9686 3.8103 3.40572
0.94 0.01167
0.011586
6.5517 3.8955 3.45041
2 0.133 0.267
0.92
6.9687 6.9334 4.7024 2.77307 2.43602
0.94
9.1924 9.1287 5.1618 3.0691 2.7184
3
0.066
0.3
44
0.92
2.68541
2.6767 1.81309 1.15735 4.01206
0.94 3.54364 3.5194 1.98996 1.18324 1.04796
7. International Journal of Latest Technology in Engineering, Management & Applied Science (IJLTEMAS)
Volume VI, Issue IV, April 2017 | ISSN 2278-2540
www.ijltemas.in Page 169
V. CONCLUSION
The academic finite element software ANSYS is a good tool
to understand the dynamics of rotor system. It is observed that
all the verification of analysis that of numerical results for a
single rotor system is very good agreement with ANSYS
results. Modal analysis of rotor system, for three cases of disk
position helps us to understand the variation of rotor dynamic
parameters such as natural frequency, critical speed and
amplitudes for different damping ratios. The natural frequency
and critical speeds of the simply supported rotor system
increases as the disk position distance decreases form the
support. The resonance effect can be easily understood by
plotting modes shapes of the rotor system. The frequency
response curves helps us to understand the amplitudes of
vibration for three cases of disk position. As the disk position
near to the support the stiffness increases so as the amplitudes
of vibration decreases. It is also shown in case of transient
vibration, the amplitudes gradually goes on decreasing on an
application of a time dependent load.
This parameters are helpful in design of rotor dynamic system
and finally conclude that the natural frequency, critical speeds
and amplitudes of vibration depends on the effect of disk
position, material properties and dimensions of rotor system
and also this analysis of rotor system helps in safe and stable
operation of the rotor system. Further this analysis can be
carried out for a different materials for disk and shaft and also
for two or more disk rotor system.
REFERENCES
[1]. Unbalance response of rotor using ANSYS parametric design for
different bearings by Ritesh Fegade, Vimal Patel, R. S. Nehete ad
B. M. Bhadarker, India.
[2]. Dynamics of a simple rotor system by Patrick McComb SRDD
12/9/2013.
[3]. Modal and transient analysis of single disc rotor system by V.
Jangde, M. Chouksey, J. patil, V. Jain research scholar, SGSITS,
Indore, Madya Pradesh, India.
[4]. Complex modal analysis of vertical rotor by finite elements
method by Agostini and Capello Souza
[5]. Experimental study of a flexible rotor and its dependency on
rolling element bearing temperature by Jean-Jacques Sinou
Thouverez.
[6]. Modelling and analysis of nonlinear rotor dynamics due to higher
order deformations in bending by Muhammad Rizwan Shad,
Gulhem Michon, and Alain Berlioz Toulouse, France.
[7]. Modal analysis of the rotor system by Tomas Jamroz, Karel
Patocka, Vladimir Daniel and Thomas Horacek aerospace research
and test establishment
[8]. Time frequency analysis for rotor rubbing diagnosis by Eduardo
Rubio and Juan C.Jauregui CIATEQ A.C., Centro de tecnologia
Avanzada Mexico.
[9]. Study of modal characteristics of a geared rotor system by Ankur
Saxena, Anand Parey and Manoj Chouksey Indore, India.
[10]. Rotor dynamic analysis of steam turbine by finite element analysis
by Trupti Wani, Nivedita B and Poorima Hombal Bangalore,
Karnataka, India.
[11]. Vibration analysis of multi rotor system through extended
Lagrangian formulation by Chandan Kumar and Vikas Rastogi,
SLIET, Longowal, Punjab, India.
[12]. Non parametric modelling and vibration analysis of uncertain
Jeffcott rotor with disc offset by Chun-biao Gan, Yue-hua Wang,
Shi-xi Yang and Yan-long Cao, Zhejiang university, Hangzhou,
China.
[13]. Transient analysis of disk brake by using ANSYS software by G.
Babukanth and M. Vimal Teja, Nirma collage of engineering and
technology, Ibrahimpatnam, Vijayawada.
[14]. Transient response of rotor on rolling element bearing with
clearance by David P. Fleming, Brian T. Murphy, Jerzy T.
Sawicki, J. V. Poplawski.
[15]. Critical speeds resulting from unbalance excitation of backward
whirl modes by Lyn M. Greenhill and Guillermo A. Cornejo.
[16]. Vibration control and stability analysis of rotor shaft system with
electromagnetic exciters by A. S. Das, M. C. Nighil, H. Irretier.
[17]. Modal analysis of damped rotor using finite element method by P.
Mutalikdesai, S. Chandraker, H. Roy NIT Rourkela, Orissa, India.
[18]. Unbalanced response and design optimization of rotor by ANSYS
and design of experiments by Ritesh Fegade and Vimal Patel.
[19]. Numerical investigation using harmonic and transient analysis to
rotor dynamics by Adan Naji Jameel Al Tamimi and Jassim Farji
Thijeel Al Draji.
[20]. Analysis of rotor acceptance criteria in large industrial rotors by
Mohammad Razi, Concordia University, Canada.
[21]. Study of modal behaviour of viscoelastic rotors using finite
element method by Pavan R. Mutalikdesai, NIT Rourkela, Orissa,
India.
[22]. Transient modal analysis of nonlinear rotor bearing systems by
Richard W. Armentrout and Edgar J. Gunter.
[23]. Modal analysis of rotating machinery structures by Enrique Simon
Gutierrez-Wing, imperial collage London.
[24]. Rotor dynamic analysis and bearing optimization study of a 3800
HP steam turbine by Dana J. Salamone
[25]. Rotor dynamic analysis of RM12 jet engine rotor using ANSYS
by Deepak srikrishnanivas, Blekinge institute of technology,
Karlskrona, Sweden.