This document discusses D'Alembert's principle and Klien's construction method for analyzing dynamic forces and determining velocity and acceleration in machines. It contains the following key points:
1) D'Alembert's principle states that a moving body can be analyzed as if in static equilibrium by introducing an inertia force equal and opposite to the product of mass and acceleration. This allows dynamic problems to be analyzed as static problems.
2) Klien's construction uses similar triangles to determine velocity and acceleration diagrams for reciprocating parts in engines without separate diagrams. It graphs velocity and acceleration vectors based on crank position.
3) Klien's acceleration diagram specifically graphs radial and tangential acceleration components of
This research paper presents a new technique for the synthesis of complex planar mechanisms. The author
calls this technique ‘nomogram-based synthesis’ since it depends on a kinematic nomogram facilitating the
synthesis of complex planar mechanisms without need to complex optimization procedures. A procedure of five
steps is presented to synthesize the mechanism under study for time ratio up to 4.3, normalized stroke up to 3.33.
The nomogram based synthesis can maintain transmission angle to be within a range from 94 to 120 degrees
indicating the effectiveness of the synthesis approach presented.
Keywords — Nomogram-based mechanism synthesis, 6 bar-2 sliders planar mechanism, successful
mechanism performance.
This research paper presents a new technique for the synthesis of complex planar mechanisms. The author
calls this technique ‘nomogram-based synthesis’ since it depends on a kinematic nomogram facilitating the
synthesis of complex planar mechanisms without need to complex optimization procedures. A procedure of five
steps is presented to synthesize the mechanism under study for time ratio up to 4.3, normalized stroke up to 3.33.
The nomogram based synthesis can maintain transmission angle to be within a range from 94 to 120 degrees
indicating the effectiveness of the synthesis approach presented.
Keywords — Nomogram-based mechanism synthesis, 6 bar-2 sliders planar mechanism, successful
mechanism performance.
Kane’s Method for Robotic Arm Dynamics: a Novel ApproachIOSR Journals
Abstract: This paper is the result of Analytical Research work in multi-body dynamics and desire to apply
Kane’s Method on the Robotic Dynamics. The Paper applies Kane’s method (originally called Lagrange form
of d’Alembert’s principle) for developing dynamical equations of motion and then prepare a solution scheme for
space Robotics arms. The implementation of this method on 2R Space Robotic Arm with Mat Lab Code is
presented in this research paper. It is realized that the limitations and difficulties that are aroused in arm
dynamics are eliminated with this novel Approach.
Key Words: Dynamics, Equation of Motion, Lagrangian, , Robotic arm, Space Robot,
Industrial Training at Shahjalal Fertilizer Company Limited (SFCL)MdTanvirMahtab2
This presentation is about the working procedure of Shahjalal Fertilizer Company Limited (SFCL). A Govt. owned Company of Bangladesh Chemical Industries Corporation under Ministry of Industries.
Welcome to WIPAC Monthly the magazine brought to you by the LinkedIn Group Water Industry Process Automation & Control.
In this month's edition, along with this month's industry news to celebrate the 13 years since the group was created we have articles including
A case study of the used of Advanced Process Control at the Wastewater Treatment works at Lleida in Spain
A look back on an article on smart wastewater networks in order to see how the industry has measured up in the interim around the adoption of Digital Transformation in the Water Industry.
Overview of the fundamental roles in Hydropower generation and the components involved in wider Electrical Engineering.
This paper presents the design and construction of hydroelectric dams from the hydrologist’s survey of the valley before construction, all aspects and involved disciplines, fluid dynamics, structural engineering, generation and mains frequency regulation to the very transmission of power through the network in the United Kingdom.
Author: Robbie Edward Sayers
Collaborators and co editors: Charlie Sims and Connor Healey.
(C) 2024 Robbie E. Sayers
About
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
Technical Specifications
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
Key Features
Indigenized remote control interface card suitable for MAFI system CCR equipment. Compatible for IDM8000 CCR. Backplane mounted serial and TCP/Ethernet communication module for CCR remote access. IDM 8000 CCR remote control on serial and TCP protocol.
• Remote control: Parallel or serial interface
• Compatible with MAFI CCR system
• Copatiable with IDM8000 CCR
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
Application
• Remote control: Parallel or serial interface.
• Compatible with MAFI CCR system.
• Compatible with IDM8000 CCR.
• Compatible with Backplane mount serial communication.
• Compatible with commercial and Defence aviation CCR system.
• Remote control system for accessing CCR and allied system over serial or TCP.
• Indigenized local Support/presence in India.
• Easy in configuration using DIP switches.
CFD Simulation of By-pass Flow in a HRSG module by R&R Consult.pptxR&R Consult
CFD analysis is incredibly effective at solving mysteries and improving the performance of complex systems!
Here's a great example: At a large natural gas-fired power plant, where they use waste heat to generate steam and energy, they were puzzled that their boiler wasn't producing as much steam as expected.
R&R and Tetra Engineering Group Inc. were asked to solve the issue with reduced steam production.
An inspection had shown that a significant amount of hot flue gas was bypassing the boiler tubes, where the heat was supposed to be transferred.
R&R Consult conducted a CFD analysis, which revealed that 6.3% of the flue gas was bypassing the boiler tubes without transferring heat. The analysis also showed that the flue gas was instead being directed along the sides of the boiler and between the modules that were supposed to capture the heat. This was the cause of the reduced performance.
Based on our results, Tetra Engineering installed covering plates to reduce the bypass flow. This improved the boiler's performance and increased electricity production.
It is always satisfying when we can help solve complex challenges like this. Do your systems also need a check-up or optimization? Give us a call!
Work done in cooperation with James Malloy and David Moelling from Tetra Engineering.
More examples of our work https://www.r-r-consult.dk/en/cases-en/
Hybrid optimization of pumped hydro system and solar- Engr. Abdul-Azeez.pdffxintegritypublishin
Advancements in technology unveil a myriad of electrical and electronic breakthroughs geared towards efficiently harnessing limited resources to meet human energy demands. The optimization of hybrid solar PV panels and pumped hydro energy supply systems plays a pivotal role in utilizing natural resources effectively. This initiative not only benefits humanity but also fosters environmental sustainability. The study investigated the design optimization of these hybrid systems, focusing on understanding solar radiation patterns, identifying geographical influences on solar radiation, formulating a mathematical model for system optimization, and determining the optimal configuration of PV panels and pumped hydro storage. Through a comparative analysis approach and eight weeks of data collection, the study addressed key research questions related to solar radiation patterns and optimal system design. The findings highlighted regions with heightened solar radiation levels, showcasing substantial potential for power generation and emphasizing the system's efficiency. Optimizing system design significantly boosted power generation, promoted renewable energy utilization, and enhanced energy storage capacity. The study underscored the benefits of optimizing hybrid solar PV panels and pumped hydro energy supply systems for sustainable energy usage. Optimizing the design of solar PV panels and pumped hydro energy supply systems as examined across diverse climatic conditions in a developing country, not only enhances power generation but also improves the integration of renewable energy sources and boosts energy storage capacities, particularly beneficial for less economically prosperous regions. Additionally, the study provides valuable insights for advancing energy research in economically viable areas. Recommendations included conducting site-specific assessments, utilizing advanced modeling tools, implementing regular maintenance protocols, and enhancing communication among system components.
Student information management system project report ii.pdfKamal Acharya
Our project explains about the student management. This project mainly explains the various actions related to student details. This project shows some ease in adding, editing and deleting the student details. It also provides a less time consuming process for viewing, adding, editing and deleting the marks of the students.
Saudi Arabia stands as a titan in the global energy landscape, renowned for its abundant oil and gas resources. It's the largest exporter of petroleum and holds some of the world's most significant reserves. Let's delve into the top 10 oil and gas projects shaping Saudi Arabia's energy future in 2024.
1. Unit-III
Dynamic Force Analysis
Dr. Ambuj Saxena
Associate Professor
Department of Mechanical Engineering
G. L. Bajaj Institute of Technology and Management
Plot No. 2, Knowledge Park III,
Greater Noida, Distt. G.B.Nagar (U.P.) India -201306
Theory of Machines
(RME-602)
2. D-Alembert’s Principle
Consider a rigid body acted upon by a system of forces.
The system may be reduced to a single resultant force acting on the body whose
magnitude is given by the product of the mass of the body and the linear
acceleration of the centre of mass of the body.
The rate of change of momentum is directly proportional to resultant forces.
According to Newton’s second law of motion, The resultant force acting in the
direction of motion is equal to the product of mass and the acceleration in the
direction of resultant force.
F = m.a ........................................(i)
F = Resultant force acting on the body,
m = Mass of the body, and
a = Linear acceleration of the centre of mass of the body.
Reference : R.S. Khurmi (Theory of Machines)
3. D-Alembert’s Principle
F – m.a = 0 ………………....(ii)
A little consideration will show, that if the quantity – m.a be treated as a force, equal, opposite and with the
same line of action as the resultant force F, and include this force with the system of forces of which F is the
resultant, then the complete system of forces will be in equilibrium.
This principle is known as D-Alembert’s principle. The equal and opposite force – m.a is known as reversed
effective force or the inertia force (briefly written as FI). The equation (ii) may be written as
F + FI = 0………………………….(iii)
Thus, D-Alembert’s principle states that “the resultant force acting on a body together with the
reversed effective force (or inertia force), are in equilibrium.”
D-Alembert’s principle states that a moving body can be brought in equilibrium by adding
inertia forces to the system. In magnitude this inertial force is equal to the product of mass
and acceleration and takes place in a direction opposite to that of acceleration.
This principle is used to reduce a dynamic problem into an equivalent static problem.
Reference : R.S. Khurmi (Theory of Machines)
4. Velocity and Acceleration of the Reciprocating Parts in Engines
• Klien’s construction
(a) Klien’s acceleration diagram. (b) Velocity diagram. (c) Acceleration diagram.
Klien’s construction.
Reference : R.S. Khurmi (Theory of Machines)
5. Velocity and Acceleration of the Reciprocating Parts in Engines
Klien’s velocity diagram
First of all, draw OM perpendicular to OP; such that it
intersects the line PC produced at M. The triangle OCM is
known as Klien’s velocity diagram.
In this triangle OCM, OM may be regarded as a line
perpendicular to PO,CM may be regarded as a line parallel
to PC, and ...(It is the same line.)
CO may be regarded as a line parallel to CO.
The velocity diagram for given configuration is a triangle
ocp as shown in Fig.
If this triangle is revolved through 90°, it will be a triangle
oc1 p1, in which oc1 represents vCO (i.e. velocity of C with
respect to O or velocity of crank pin C) and is parallel to
OC,
op1 represents vPO (i.e. velocity of P with respect to O or
velocity of cross-head or piston P) and is perpendicular to
OP, andc1p1 represents vPC (i.e. velocity of P with respect to
C) and is parallel to CP. A little consideration will show,
that the triangles oc1p1 and OCM are similar. Therefore,
The velocities of various points may be obtained without
drawing a separate velocity diagram.
Reference : R.S. Khurmi (Theory of Machines)
6. Klien’s acceleration diagram
• Draw a circle with C as centre and CM as radius.
• Draw another circle with, PC as diameter. this circle inter-sect the previous circle at
K and L.
• Join KL and produce it to intersect PO at N. Let KL intersect PC at Q. This forms the
quadrilateral CQNO, which is known as Klien’s acceleration diagram.
c'x represents ar
PC (i.e. radial component of the acceleration of crosshead or piston P
with respect to crank pin C) and is parallel to CP or CQ;
o'c' represents ar
CO (i.e. radial component of the acceleration of crank pin
with respect to O) and is parallel to CO;
xp' represents at
PC (i.e. tangential component of the acceleration of P with respect to C)
and is parallel to QN (because QN is perpendicular to CQ); and
o'p' represents aPO (i.e. acceleration of P with respect to O or the acceleration of
piston P) and is parallel to PO or NO.
A little consideration will show that the quadrilateral o'c'x p‘ is similar to quadrilateral
CQNO Therefore,
Reference : R.S. Khurmi (Theory of Machines)
7. Reference : R.S. Khurmi (Theory of Machines)
The acceleration of piston P with respect to crank pin C (i.e. aPC) may be
obtained from:
To find the velocity of any point D on the connecting rod PC, divide CM at D1 in the same
ratio as D divides CP. In other words,
To find the acceleration of any point D on the connecting rod PC, draw a line from a point D
parallel to PO which intersects CN at D2 .
If the crank position is such that the point N lies on the right of O instead of to the left as
shown in Fig. then the acceleration of the piston is negative. In other words, the piston is
under going retardation.
8. The acceleration of the piston P is zero and its velocity is maximum, when N coincides with O. There is no
simple graphical method of finding the corresponding crank position, but it can be shown that for N
and O to coincide, the angle between the crank and the connecting rod must be slightly less than 90°. For
most practical purposes, it is assumed that the acceleration of piston P is zero, when the crank OC and
connecting rod PC are at right angles to each other.
Reference : R.S. Khurmi (Theory of Machines)