Theory of Machine - I for SPPU 15 Course (SE - II - Mech. - 202048) - 2020 Edition

by Anup Goel

Unit I : Fundamentals of Kinematics and Mechanisms (Chapters - 1, 2) Kinematic link, Types of links, Kinematic pair, Types of constrained motions, Types of kinematic pairs, Kinematic chain, Types of joints, Mechanism, Machine, Degree of freedom (Mobility), Kutzbach crieterion, Grubler's criterion. Four bar chain and its inversions, Grashoff's law, Slider crank chain and its inversions, Double slider crank chain and its inversions. Equivalent linkage of mechanisms. Exact and approximate straight line mechanism, Steering gear mechanisms : Condition for correct steering, Davis steering gear mechanism, Ackermann steering gear mechanism. Unit II : Static and Dynamic Force Analysis (Chapters - 3, 4 ) Theory and analysis of compound pendulum, Concept of equivalent length of simple pendulum, Bifilar suspension, Trifilar suspension. Dynamics of reciprocating engines : Two mass statically and dynamically equivalent system, Correction couple, Static and dynamic force analysis of reciprocating engine mechanism (analytical method only), Crank shaft torque, Introduction to T- diagram. Friction : Friction and types of friction, Laws of friction, Friction in turning pair, Friction circle, Friction axis, Friction in four bars and slider crank mechanism. Unit III : Friction Clutches, Brakes and Dynamometer (Chapters - 5, 6) Pivot and collar friction, Plate clutches, Cone clutches, Centrifugal clutch, Torque transmitting capacity. Different types of brakes, Shoe brakes, External and internal shoe brakes, Block brakes, Band brakes and band and block brakes, Braking torque and different types of absorption and transmission type dynamometer. Unit IV : Kinematic Analysis of Mechanisms : Analytical Methods (Chapter - 7) Analytical method for displacement, Velocity and acceleration analysis of slider crank mechanism. Position analysis of links with vector and complex algebra methods, Loop closure equation, Chase solution, Velocity and acceleration analysis of four bar and slider crank mechanisms using vector and complex algebra methods. Hooke's joint, Double Hooke's joint. Unit V : Velocity and Acceleration Analysis of Simple Mechanisms : Graphical Methods-I (Chapters - 8, 9) Relative velocity method : Relative velocity of a point on a link, Angular velocity of a link, Sliding velocity, Velocity polygons for simple mechanisms. Relative acceleration method : Relative acceleration of a point on a link, Angular acceleration of a link, Acceleration polygons for simple mechanisms. Instantaneous center of rotation (ICR) method : Definition of ICR, Types of ICRs, Methods of locating ICRs, Kennedy's theorem, Body and space centrode. Unit VI : Velocity and Acceleration Analysis of Mechanisms : Graphical Methods-II (Chapter - 10) Velocity and acceleration diagrams for the mechanisms involving Coriolis component of acceleration. Klein's construction.

Kindle Edition

Published May 5, 2020