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A Textbook of Theory of Machines (In S.I. Units) [For Degree, U.P.S.C. (Engg. Services), A.M.I.E. (India)] 5th Edition,813180805X,9788131808054

A Textbook of Theory of Machines (In S.I. Units) [For Degree, U.P.S.C. (Engg. Services), A.M.I.E. (India)] 5th Edition

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Book Information

Publisher:Laxmi Publications Pvt. Ltd.
Published In:2010
ISBN-10:813180805X
ISBN-13:9788131808054
Binding Type:Paperback
Weight:3.76 lbs
Pages:pp. xii + 1091, Figures, Graphs, Index

The Title "A Textbook of Theory of Machines (In S.I. Units) [For Degree, U.P.S.C. (Engg. Services), A.M.I.E. (India)] 5th Edition" is written by J.S. Brar. This book was published in the year 2010. The ISBN number 813180805X|9788131808054 is assigned to the Paperback version of this title. The book displayed here is a 5th Edition edition. This book has total of pp. xii + 1091 (Pages). The publisher of this title is Laxmi Publications Pvt. Ltd.. We have about 1475 other great books from this publisher. A Textbook of Theory of Machines (In S.I. Units) [For Degree, U.P.S.C. (Engg. Services), A.M.I.E. (India)] 5th Edition is currently Available with us.

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Contents

I. INTRODUCTION :
1. Definition
2. Mechanism and Machine
3. Link
4. Kinematic Pair
5. Degrees of Freedom
6. Kinematic Chain
7. Binary, Ternary, Quaternary Joints
8. Binary, Ternary and Quaternary Links
9. Degrees of Freedom for Plane Mechanism
10. Inversion of Mechanism
11. Different Types of Kinematic Chains and Their Inversions

Highlights
Exercise-1

II. MOTION OF INERTIA :
1. Introduction
2. Displacement
3. Velocity
4. Acceleration
5. Acceleration of a Particle Moving along a Circular Path
6. Angular Displacement
7. Angular Velocity
8. Angular Acceleration
9. Force, Mass and Weight
10. Centripetal and Centrifugal Force
11. Mass Moment of Inertia
12. Angular Momentum
13. Torque
14. Work
15. Power
16. Energy
17. Law of Conservation of Energy
18. Impulse and Impulsive Force
19. Law of Conservation of Momentum
20. Impact of Two Bodies
21. Simple Harmonic Motion
22. Tensional Pendulum
23. Moment of Inertia for Connecting Rod

Highlights
Exercise-2

III. VELOCITY OF POINTS IN MECHANISM :
A. Instantaneous Centre Method :
1. Introduction
2. Instantaneous Centre Method
3. Analysis of Reciprocating Engine Mechanism by Instantaneous Centre Method
4. Analysis of Four Bar Mechanism by Instantaneous Centre Method
3.5. Number and Types of Instantaneous Centres in a Mechanism
3.6. Method for Locating an Instantaneous Centre
3.7. Kennedy Theorem (or Three Centres-in-line Theorem)
3.8. Procedure of Locating Instantaneous Centres

B. Relative Velocity Method :
9. Relative Velocity Method
10. Velocities in Four Bar Chain
11. Velocities in Slider Crank Mechanism
12. Rubbing Velocity at a Pin-Joint
13. Forces Acting in a Mechanism
14. Mechanical Advantage

Highlights

IV. ACCELERATION IN MECHANISM :
1. Introduction
2. Acceleration of a Body Moving along a Circular Path
3. Acceleration Diagram for a Link
4. Acceleration Diagram for a Slider Crank Mechanism
5. Coriolis Acceleration Component

Highlights
Exercise-4

V. MECHANISM WITH LOWER PAIRS :
1. Introduction
2. Pantograph
3. Straight Line Mechanism
4. Exact Straight Line Motion Mechanisms
5. Approximate Straight Line Motion Mechanism :
6. Application of Straight Line Motion in Engine Indicators :
7. Steering Gears :
8. Universal or Hooke's Joint :
9. Double Hooke's Joint

Highlights
Exercise-5

VI. FRICTION :
1. Introduction
2. Definitions
3. Types of Friction
4. Laws of Dry Friction
5. Angle of Repose
6. Equilibrium of a Body lying on a Rough Inclined Plane
7. Screw Threads Friction
8. Screw-Jack
9. V-Threads Friction
10. Pivot and Collar Bearing
11. Friction Clutches :
12. Greasy Friction :
13. Film Friction or Viscous Friction

Highlights
Exercise-6

VII. BELTS, ROPES AND CHAIN DRIVES :
1. Introduction
2. Open Flat Belt Drive
3. Cross Belt Drive
4. Compound Belt Drive
5. Length of Belt
6. Ratio of Belt Tensions
7. Power Transmitted by Belt
8. Centrifugal Tension
9. Maximum Power Transmitted by a Belt
10. Initial Tension in the Belt
11. V-Belt Drive and Rope-Drive
12. Chain Drive
13. Relative Advantages and Disadvantages of Chain and Belt (or Rope) Drives

Highlights
Exercise-7

VIII. BRAKES AND DYNAMOMETERS
1. Introduction
2. Types of Brakes
3. The Braking of a Vehicle
4. Dynamometer
5. Absorption Dynamometer
6. Transmission Dynamometer

Highlights
Exercise-8

IX. GEARS :
1. Introduction
2. Classification of Gears
3. Definition of the terms used in Gears
4. Law of Gearing or Condition for Constant Velocity Ratio of Gear Wheels
5. Velocity of Sliding
6. Forms of Teeth
7. Cycloidal Profile Teeth
8. Length of Path of Contact
9. Length of Arc of Contact
10. Number of Pairs of Teeth in Contact (or Contact ratio)
11. Interference in Involute Gears
12. The Minimum Number of Teeth required on the Pinion in Order to Avoid Interference
13. The Minimum Number of Teeth required on the Wheel in order to avoid Interference
14. Interference between Rack and Pinion and Minimum Number of Teeth on a Pinion for Involute Rack in order to avoid Interference
15. Helical Gears
16. Important Terms for Helical Gears
17. Spiral Gears
18. The Efficiency of the Spiral Gears

Highlights
Exercise-9

X. GEAR TRAINS :
1. Introduction
2. Types of Gear Trains
3. Velocity Ratio of Gear Trains
4. Sun and Planet Gear
5. Torques and Tooth Loads in Epicyclic Gear Train
6. Compound Epicyclic Gear Train
7. Epicyclic Gear Train with Bevel Gear

Highlights
Exercise-10

XI. INERTIA FORCES IN RECIPROCATING PARTS :
1. Introduction
2. D-Alembert's Principle
3. Effect of a Number of Forces Acting on a Rigid Body
4. Velocity and Acceleration of the Piston
5. Torque Exerted on the Crank-shaft when Friction and Inertia of Moving Parts are Neglected
6. Forces on the Reciprocating Parts of an Engine Considering Friction and Inertia of Moving Parts but Neglecting Weight of the Connecting Rod
7. Torque on the Crank-shaft or Turning Moment on Crank-Shaft
8. Dynamically Equivalent System
9. Magnitude of Correction Couple Applied to Two Mass System which is Dynamically Equivalent to Rigid Body
10. Torque Exerted on the Crank-shaft, Considering the Weight of the Connecting Rod

Highlights
Exercise-11

XII. TURNING MOMENT DIAGRAMS :
1. Introduction
2. Turning Moment Diagrams for Different Types of Engines
3. Fluctuation of Energy and Fluctuation of Speed of Crank-shaft
4. Co-efficient of Fluctuation of Energy (Ke)
5. Co-efficient of Fluctuation of Speed (Ks)
6. Flywheels
7. Flywheel's Rim Dimensions
8. Operation of a Flywheel in a Punching Press

Highlights
Exercise-12

XIII. BALANCING OF ROTATING MASSES :
1. Introduction
2. Balancing of Rotating Masses

Highlights
Exercise-13

XIV. BALANCING OF RECIPROCATING MASSES :
1. Introduction
2. Balancing of Reciprocating Engine
3. Partial Balancing of Primary Force
4. Partial Balancing of Locomotives
5. Effect of Partial Balancing of Locomotives
6. Coupled Locomotives
7. Primary Balance of Multi-cylinder In-line Engines
8. Secondary Balance of Multi-cylinder In-line Engines
9. Method of Direct and Reverse Cranks
10. V-Engines Balancing

Highlights
Exercise-14

XV. GOVERNORS :
1. Introduction
2. Types of Governors
3. Types of Centrifugal Governors
4. Watt Governor
5. Porter Governor
6. Proell Governor
7. Hartnell Governor
8. Wilson-Hartnell Governor
9. Some Important Definitions
10. Governor Effort and Power
11. Controlling Force
12. Friction and Insensitiveness

Highlights
Exercise-15

XVI. VIBRATIONS (LONGITUDINAL AND TRANSVERSE) :
1. Introduction
2. Types of Vibration
3. Important Definitions for Vibrating Motion
4. Free Vibrations
5. Methods of Finding the Natural Frequency of Free Longitudinal Vibrations
6. Method for Natural Frequency of Free Transverse Vibrations
7. Effect of the Inertia of Shaft on Longitudinal and Transverse Vibrations
8. Natural Frequency of Transverse Vibrations of Shafts or Beams under Different Types of Loads and End Conditions
9. Natural Frequency of Transverse Vibrations of a System of Several Loads Attached to the Same Shaft
10. Whirling Speeds or Critical Speeds
11. Damped Vibrations
12. Logarithmic Decrement
13. Forced-Damped Vibrations
14. Magnification Factor
15. Vibration Isolation and Transmissibility

Highlights
Exercise-16

XVII. TORSIONAL VIBRATIONS :
1. Introduction
2. Natural Frequency of Free Torsional Vibrations
3. Effect of Inertia of Shaft on Torsional Vibrations
4. Free Torsional Vibrations of a Single Rotor System
5. Free Torsional Vibrations of a Two Rotor System
6. Free Torsional Vibrations of a Three Rotor System
7. Torsionally Equivalent Shaft
8. Free Torsional Vibrations of a Geared System

Highlights
Exercise-17

XVIII. CAMS :
1. Introduction
2. Types of Followers
3. Nomenclatures for Cam Profile
4. Motions of the Follower
5. Uniform Motion or Uniform Velocity of a Follower
6. Simple Harmonic Motion of Follower
7. Uniform Acceleration and Uniform Retardation
8. Cycloidal Motion
9. Cam Profile Construction
10. Cam Profile for Roller Followers
11. Cams with Specified Contours
12. Circular Arc Cam with Flat-faced Follower
13. Tangent Cam with Roller-follower

Highlights
Exercise-18

XIX. COMPUTER-AIDED ANALYSIS OF MECHANISMS
1. Introduction
2. Coupler Curve
3. Coupler Curve for Slider Crank Chain
4. Coupler Curve for Four Bar Kinematic Chain
5. Computer-Aided Analysis of Mechanism
6. Computer-Aided Analysis of Slider Crank Mechanism
7. Computer Programme for a Slider Crank Mechanism in FORTRAN
8. Computer Aided Analysis of Four Bar Kinematic Chain
9. Computer Programme for a Four Bar Kinematic Chain

Problem 19.4
Exercise-19

XX. SYNTHESIS OF MECHANISM :
1. Introduction
2. Degrees of Freedom of a Planar Kinematic Chain (Griibler Criterion)
3. Dimensional Synthesis
4. Mechanisms for Position Guidance
5. Summary

Highlights
Exercise-20

XXI. GYROSCOPIC EFFECTS AND GYROSCOPE :
1. Introduction
2. Spinning and Precession
3. Gyroscopic Couple
4. Effect of Gyroscopic Couple on the Stability of Automotive Vehicles
5. Gyroscopic Effects on Ships and Aeroplanes
6. Gyroscopic Analysis of Grinding Mill
7. Gyroscope

Exercise-21

Objective Type Questions

Preface

The popularity of the fourth edition of the textbook of Theory of Machines amongst the students and the teachers of the various Universities in the country, has prompted the bringing out of the fifth edition of the book so soon. The fifth edition has been thoroughly revised and brought up-to-date.

In the fifth edition, the three chapters entitled Computer Aided Analysis, Synthesis of Mechanism and Gyroscopic Couple and its effects have been added. The first two chapters have been written by Dr. J.S. Brar (Professor and Head of Dept. of Mechanical Engg., Delhi College of Engg., Delhi-110042) and the third chapter by Dr. J.S. Brar and Dr. R.K. Bansal in a simple and easy-to-follow language so that even an average student can grasp the subject by self-study. The computer programmes for the chapter "Computer Aided Analysis" was initially in FORTRAN. Now these programmes have also been written in C++ by Puneet Bansal in this edition. Many good examples have been solved using C++ programme. The input and output data for all these examples have been included in this edition. With these additions, it is hoped that the book will be quite useful for the students of various Engineering Institutions.

The objective type multiple-choice questions are often asked in various competitive examinations. Hence a large number of objective type questions with answers have been added in the end of the book.

We express our sincere thanks to our colleagues, friends, students and the teachers of different Indian Universities for their valuable suggestions and recommending the book to their students.

Suggestions for the improvement of this book are most welcome and would be incorporated in the next edition with a view to make the book more useful.

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