Design of helical spring against static loading
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This document discusses the design of helical springs against static loading. It defines what a helical spring is and its functions of storing and releasing energy and absorbing shock. The key design considerations for helical springs are described such as required space, forces, tolerances, costs and environment. Formulas are provided for calculating stresses in the spring from torsional and direct shear forces. Common spring materials and effects of end treatment are also summarized. Buckling is discussed and the formula provided. Parameters calculated by the design module are outlined such as spring dimensions, load rating and stresses. Spring testing machines are also briefly mentioned.
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design of knuckle joint may 2020
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diploma mechanical engineering
,
mechanical engineering
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machine design
,
design of machine elements
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knuckle joint
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failures of knuckle joint under different streses
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fork end
,
single eye end
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THE QUESTION NUMBER WILL MATCH TO THE QUESTION BANK ATTACHED AT THE END
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design of knuckle joint may 2020
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diploma mechanical engineering
,
mechanical engineering
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machine design
,
design of machine elements
,
knuckle joint
,
failures of knuckle joint under different streses
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,
single eye end
,
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ME6503 - DESIGN OF MACHINE ELEMENTS UNIT - IV NOTES
ME6503 - DESIGN OF MACHINE ELEMENTS UNIT - IV NOTES
Concentric springs, surge phenomenon in spring, helical torsion, spiral spring
Concentric springs, surge phenomenon in spring, helical torsion, spiral spring
5 shaft shafts subjected to combined twisting moment and bending moment
5 shaft shafts subjected to combined twisting moment and bending moment
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This document contains solutions to problems from machine design textbooks by Khurmi and Gupta provided by Eng. Younis Fakher for 4th year mechanical engineering students at Thi-Qar University College of Engineering in 2010-2011. The solutions cover problems from chapters 4 through 6.
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A REVIEW ON HELICAL COMPRESSION SPRING TO DESIGN A SHOCK ABSORBER OF BIKE
A REVIEW ON HELICAL COMPRESSION SPRING TO DESIGN A SHOCK ABSORBER OF BIKE
A computational approach for evaluating helical compression springs
A computational approach for evaluating helical compression springs
Solutions Manual for machine design by khurmi and Gupta
Solutions Manual for machine design by khurmi and Gupta
Similar to Design of helical spring against static loading
Generators [compatibility mode]
Electrostatic generators produce high voltages but have low power ratings and are not used commercially. Electromagnetic generators convert mechanical energy to electrical energy using the principle of electromagnetic induction. The basic parts of a generator are the magnetic frame, pole cores and shoes, field coils, armature core, armature winding, commutator, and brushes. As the armature rotates in the magnetic field created by the poles, a voltage is induced in the armature coils. The commutator and brushes direct the current produced to the external circuit. Synchronous generators use a rotating magnetic field to induce current, while asynchronous generators operate slightly slower than the grid frequency.
Chapter 4 Mechanical Spring (2).pptx
The document discusses different types of mechanical springs, including helical compression springs, helical tension springs, and helical torsion springs. It covers spring materials such as music wire and oil-tempered wire. Key aspects of helical compression spring design discussed include stresses in the spring, deflection calculation using Castigliano's theorem, stability, and fatigue loading. Critical frequency of helical springs is also addressed. The document provides information on tension helical springs and discusses their ends.
ASSIGNMENT 1 PPT TYMEB136.pptx
Types of Sensors used in Automobiles
Mass airflow sensor.
Engine Speed Sensor.
Oxygen Sensor.
Spark Knock Sensor.
Coolant Sensor.
Manifold Absolute Pressure (MAF) Sensor.
Fuel Temperature Sensor.
Voltage sensor.
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Different Types of Car Sensors used in Automobiles - ElProCushttps://www.elprocus.com › different-types-of-sensors-use...
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Automotive Sensors: MEMShttp://www.ann.ece.ufl.edu › courses › papers › A...
PPT
Introduce MEMS; Applications; Automotive Specific Information; Fabrication ... MEMS Sensors and Actuators used to control various elements of the automobile.
Unit -IV Automotive Sensors & Actuatorshttps://www.gcoeara.ac.in › auto
PDF
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Configuration schematic of DISTRONIC PLUS, where orange is a 77 GHz LRR-sensor and green is a 24 GHz SRR-sensor (Source: Daimler AG, Stuttgart, Germany).
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Types of Sensors used in Automobiles
Mass airflow sensor.
Engine Speed Sensor.
Oxygen Sensor.
Spark Knock Sensor.
Coolant Sensor.
Manifold Absolute Pressure (MAF) Sensor.
Fuel Temperature Sensor.
Volt
SEMINAR @Design And Analysis Of A Connecting Rod With Different Materials
This document describes a study analyzing connecting rods made of different materials using ANSYS software. The study models connecting rods made of forged steel, silicon carbide, aluminum 7068 alloy, and stainless steel 304. It simulates each material to calculate stress, strain, and deformation. The results show that a connecting rod made of silicon carbide experiences the highest maximum stress of 2.9968x108 MPa but the lowest deformation of 0.00056179. The conclusion is that using lighter materials like aluminum alloys can reduce the connecting rod's weight while still withstanding the forces.
ELECTROMAGNETIC ENGINE
The prototype is an idea which uses the property of an electromagnet by virtue of which it changes the polarity of its poles whenever the direction of current is changed. This variation in polarity is utilized to attract or repel the permanent magnet attached to the piston. The usage of relay and timer will limit the output of the engine. By using an ECU in the engine instead, power can be obtained on each stroke which will result in an increased output.
DC MOTORS-UNIT-II.pdf
- A DC motor converts electrical energy into mechanical energy through electromagnetic principles. It has a rotor that rotates when current passes through the motor's armature winding within a magnetic field.
- The key components of a DC motor are the armature winding, field winding, commutator, and brushes. The field winding generates a magnetic field and the armature winding cuts this field to produce torque when powered.
- DC motors can be shunt wound, series wound, or compound wound depending on how the field winding is connected in relation to the armature winding. This determines the speed and torque characteristics of the motor.
ME6503 design of machine elements - question bank.
This document contains questions and problems related to the design of machine elements, specifically regarding shafts and couplings. It includes 20 questions in Part A testing basic recall and understanding, 13 multi-part problems in Part B applying concepts to design scenarios, and 4 complex design problems in Part C. The topics covered include stresses in shafts, hollow vs solid shafts, keys and keyways, rigid and flexible couplings, and the design of shafts and keys based on strength and rigidity considerations.
Springs - DESIGN OF MACHINE ELEMENTS-II
Introduction to springs, Types and terminology of springs, Stress and deflection equations, Series and parallel connection, Design of helical springs, Design against fluctuating load, Concentric springs, Helical torsion springs, Spiral springs, Multi-leaf springs, Optimum design of helical spring
DC Motor Presentation.pptx
The document discusses DC motors, providing definitions, working principles, and components. It describes:
1) The key components of a DC motor include a DC supply, conductor/coil, and magnetic field. The magnetic field acts as a medium to convert electrical input into mechanical output.
2) Fleming's left hand rule describes how the direction of generated force is determined based on the direction of current flow and magnetic flux.
3) DC motors have several parts like magnetic poles, armature winding, commutator, and brushes that work together to convert electrical energy to rotational motion.
4) Speed can be controlled through methods like armature control using a rheostat, and field control using
DC GEN IHIJHOIOOIUOUIUUOJOJUHOPOIJHOIJIH
A DC generator converts mechanical energy into electrical energy using the principles of electromagnetic induction. It has two main parts - a stationary stator that produces a magnetic field and a rotating armature.
The stator contains pole cores, pole shoes, and field coils that create the magnetic field when current is passed through the coils. The armature is made of laminated steel and contains conductors that rotate through the magnetic field. This cutting of magnetic flux by the conductors induces an electromotive force (emf) based on Faraday's law of induction.
The induced emf alternates as the conductors pass through different parts of the magnetic field. A commutator is used to rectify the alternating emf
dc-generators-unit-1.ppt
The document discusses direct current (DC) generators, including:
1. DC generators operate by converting mechanical energy to electrical energy as conductors move through a magnetic field, inducing an electromotive force (EMF) based on Faraday's law of induction.
2. The construction of DC generators includes a yoke, rotor, stator, field electromagnets, pole cores, brushes, shaft, armature coils, commutator, and bearings. The commutator is needed to produce steady DC output from the pulsating current induced in the armature coils.
3. There are different types of DC generators including separately excited, self-excited (shunt-wound,
DESIGN OF SPRINGS-UNIT4.pptx
Spring is an elastic body whose function is to distort when loaded and to recover its original shape when the load is removed.
APPLICATION OF SPRINGS
To apply forces as in brakes, clutches and spring loaded valves.
To store energy as in watches, toys.
To measure forces as in spring balance and engine indicators.
To cushion, absorb or control energy due to either shock or vibration as in car.The material of the spring should have
high fatigue strength,
high ductility,
high resilience and
creep resistant.
It largely depends upon the size and service.
The strength of the wires varies with size, smaller size wires have greater strength and less ductility, due to the greater degree of cold working.
Severe service means rapid continuous loading where the ratio of minimum to maximum load (or stress) is one-half or less, as in automotive valve springs.
Average service includes the same stress range as in severe service but with only intermittent operation, as in engine governor springs and automobile suspension springs.
Light service includes springs subjected to loads that are static or very infrequently varied, as in safety valve springs.
The springs are mostly made from oil-tempered carbon steel wires containing 0.60 to 0.70 per cent carbon and 0.60 to 1.0 per cent manganese.
Unit 2 Design Of Shafts Keys and Couplings
This document provides information about the design of shafts, keys, and couplings. It discusses transmission shafts, stresses induced in shafts, and shaft design based on strength and rigidity. It presents formulas for shaft design using maximum shear stress theory, distortion energy theory, and the ASME code. Several examples are provided to demonstrate how to calculate the diameter of a shaft given the power transmitted, loads on the shaft, material properties, and other parameters using these theories and codes. Assignments involving similar calculations of shaft diameters are presented.
Novel Design and Model of Punching Machine Driven By Electromagnetic Actuator
The greatest challenge faced by an engineer is
to overcome the energy wasted due to friction in any
mechanical process. In a conventional punching process,
mechanical or hydraulic force is used to operate the punch
which involves large amounts of metal to metal contact in the
drive system components, as well as inaccuracy in the control
of the punching forces at the micro level. This paper introduces
the basic construction of an Electromagnetic assisted punching
machine to carry out the punching operation. The punching
force is generated by an electromagnetic coil wound around a
metal core. Since the proposed design replaces Mechanical or
hydraulic drive with an electromagnetic actuator, the setup is
capable of perfectly controlling the force generated by the
controlling the power supplied. The micro punching setup is
designed to punch small parts at a precisely controlled rate of
power consumption and thus the process becomes a low friction,
high efficiency process. After successful fabrication, the setup
was tested and the punching force produced was validated.
The punched samples were further analyzed optically for any
defects such as burring and those results were documented.
Unit 2.doc
A DC motor converts electrical energy into mechanical energy by using the principle of electromagnetic induction. When a current carrying conductor is placed in a magnetic field, it experiences a force that causes it to rotate. In a DC motor, current is passed through stationary conductors located between poles of a magnetic field. This sets up opposing magnetic fields that produce a torque causing the rotor to rotate within the stator. The direction of current flow determines the direction of rotation. By reversing the current direction, the direction of torque and rotation is also reversed, allowing DC motors to run in both forward and reverse directions.
08-Strength of Welded Connections (Steel Structural Design & Prof. Shehab Mou...
The document discusses the strength of welded connections, including fillet and groove welds. It provides the equations to calculate the strength of fillet welds based on weld size and length. It also provides equations for calculating the strength of gusset plates based on yield strength, tensile strength, and area. An example calculation is shown for a welded connection with longitudinal and transverse welds. The strength is calculated for the welds, angles, and gusset plate. The governing strength is found to be the yielding of the gusset plate at 457.2 kN.
Design of Beam- RCC Singly Reinforced Beam
Concrete beams are an essential part of civil structures. Learn the design basis, calculations for sizing, tension reinforcement, and shear reinforcement for a concrete beam.
H04615560
This document analyzes and tests the helical compression spring used in two-wheeler suspensions. It compares the stresses and deflections of the existing steel spring to a new material spring. Finite element analysis is used to determine stresses and deflections. Prototypes are also tested under various loads. The analysis shows the new vanadium-chrome steel spring has 13-17% less maximum shear stress and 10% less deflection compared to the hard-drawn steel spring. There is close agreement between experimental, analytical, and theoretical values, validating the analysis methods. The new spring material provides improvements over the existing design.
Me302 fall 2020 homework assignment 1
This document outlines the assignments for a Materials Mechanics course. It includes 9 problems covering various topics in mechanics of materials, such as determining internal forces in frames, factors of safety for steel and concrete components, required member thickness and pin diameters, stresses in plates from shafts, strains in wires under forces, and displacements from cable strains. Students are asked to calculate values, determine sizes, and find stresses and strains. The assignments cover concepts from the first two chapters and are due by September 7th at 11:59 PM.
Content 1 - Principle of DC Generator Action and Generation of EMF.pptx
The document describes the working principles and construction of a DC generator. It discusses how a DC generator converts mechanical energy into electrical energy through electromagnetic induction. It has a stationary field system that produces a magnetic field and a rotating armature that cuts the field lines. This induces an alternating current in the armature coils. A commutator then converts this alternating current into direct current that can power external devices. The key components of a DC generator and their functions are also outlined.
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SEMINAR @Design And Analysis Of A Connecting Rod With Different Materials
SEMINAR @Design And Analysis Of A Connecting Rod With Different Materials
ME6503 design of machine elements - question bank.
ME6503 design of machine elements - question bank.
Novel Design and Model of Punching Machine Driven By Electromagnetic Actuator
Novel Design and Model of Punching Machine Driven By Electromagnetic Actuator
08-Strength of Welded Connections (Steel Structural Design & Prof. Shehab Mou...
08-Strength of Welded Connections (Steel Structural Design & Prof. Shehab Mou...
Content 1 - Principle of DC Generator Action and Generation of EMF.pptx
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本公司拥有海外各大学样板无数，能完美还原。
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四.办理各国各大学文凭(一对一专业服务,可全程监控跟踪进度)
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一比一原版(BU毕业证)波士顿大学毕业证如何办理
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国外毕业证学位证成绩单办理流程：
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Design of helical spring against static loading
- 1. DESIGN OF HELICAL SPRING AGAINST STATIC LOADING BIRLA VISHVAKARMA MAHAVIDHYALYA MECHANICAL ENGINEERING V.V.NAGAR Batch D-6 Created by:- 130070119052-Parikh Manir 130070119053-Parmar Dinesh 130070119054 -Patel Akash 130070119057 -Patel Harsh Guided By:- Prof. R.G. Jivani
- 2. Helical spring is a spiral wound wire with a constant coil diameter and uniform pitch. WHAT IS HELICAL SPRING? FUNCTION OF HELICAL SPRING Used to store energy and subsequently release it To absorb shock To maintain a force between contacting surfaces
- 3. DESIGN CONSIDERATION OF HELICAL SPRING • The design of new helical involves the following consideration. – Space into which the spring must fit and operate – Values of working forces and deflections – Accuracy and reliability needed. – Tolerances and permissible variations in specifications. – Environmental conditions such as temperature, pressure of corrosive atmosphere. – Cost and qualities needed
- 4. C = Spring Index D/d d = wire diameter (m) D = Spring diameter (m) Di = Spring inside diameter (m) E = Young's Modulus (N/m2) F = Axial Force (N) G = Modulus of Rigidity (N/m2) L 0 = Free Length (m) L s = Solid Length (m) n t = Total number of coils n = Number of active coils p = pitch (m) τ = shear stress (N/m2) τ max = Max shear stress (N/m2) θ = Deflection (radians) K W = Wahl Factor = [(4C-1)/(4C+5)}]+ (0,615/C) NOMENCLATURE OF HELICAL SPRING
- 5. SPRING MATERIAL 1. High carbon steel • Music Wire (ASTM A228) • Hard Drawn (ASTM A227) • High Tensile Hard Drawn (ASTM A679) • Oil Tempered (ASTM A229) • Carbon Valve (ASTM A230) 2. Alloy spring steel • Chrome Vanadium (ASTM A231) • Chrome Silicon (ASTM A401) 3. Stainless steel • AISI 302/304 - ASTM A313 • AISI 316 - ASTM A313 • 17-7 PH - ASTM A313(631) 4. Copper based alloy • Phosphor Bronze (Grade A) - ASTM B159 • Beryllium Copper - ASTM B197 • Monel 400 (AMS 7233) • Monel K500 (QQ-N-286 5. Nickel based alloy • A286 Alloy • Inconel 600 (QQ-W-390) • Inconel 718 • Inconel X-750 (AMS 5698, 5699)
- 6. STRESSES IN HELICAL SPRING • A round wire helical compression is subjected to axial force. • The effect of axial force is equivalent to: 1. Torsional T=FD/2, acting on the wire cross section 2. Direct shear force F acting on wire cross section • So stresses induced in spring wire are, 1. Torsional shear stress 2. Direct shear stress
- 7. 1. Torsional Shear Stress: - The torsional shear stress induced in a spring wire,due to torsional moment T=FD/2 is given by, 2. Direct Shear Stress: - The direct shear stress induced in a springwire,due to direct shear force F is given by, 33 816 d FD d T t 22 4 4 d F d F d
- 8. 3. Resultant Shear Stress: - Hence, the maximum resultant shear stress in the spring wire is given by, dt 23 48 d F d FD D d d FD 2 1 8 3 Cd FD 5.0 1 8 3 2 8 d FC Ks
- 9. EFFECT OF END TREATMENT
- 10. 1. Outer Diameter (Do) 2. Spring Index (C) 3. Slenderness ratio 4. Spring Deflection 5. Maximum load 7. Maximum shear stress 6. Corrected maximum stress 8. Wahl correction factor THE MODULE CALCULATES THE FOLLOWING DESIGN PARAMETERS: dDD 0 dDDi DL / Gd nFC3 8 maxmax kP max ' max wK 2 8 d FcKs
- 11. For steel springs BUCKLING If free length of helical compression spring is too large as compared to the mean coil dia., the spring act as flexible column and it may buckle under the action of axial force. In order to avoid buckling, the spring must satisfy following condition 2 1 2 2 EG GE D L 63.2 D L
- 15. REFERENCES • www.wikipedia.com • A Textbook of Machine Design by R.S.KHURMI AND J.K.GUPTA, S. Chand publication • https://centroidworks.files.wordpress.com/2008/11/design -of-helical-spring • http://s3.amazonaws.com/pptdownload/springppt- 140129092311-phpapp02.ppt?response-content- disposition=attachment&Signature=7aeV8Uo1rykGO3UTq9 ZK2XdKv38%3D&Expires=1444133422&AWSAccessKeyId=A KIAIA7QTBOH2LDUZRTQ