# THEORY OF MACHINES (3341903)

Syllabus

Sr. Topics Teaching Hours Module Weightage
1
Introduction
1.1 Theory of machines: introduction, need, scope and importance in design and analysis.
1.2 Kinematics, kinetics and dynamicsconcept and examples.
1.3 Basic terminology related to machines and mechanisms.
1.4 Development of different mechanisms and its inversions like four bar chain mechanism , slider crank mechanism, double slider crank mechanism, etc.
2
Velocity and acceleration diagram
2.1 Basic concept used in solving velocity and acceleration problems.
2.2 Approach to solve velocity and acceleration related to mechanisms using Relative velocity method for single slider crank mechanism and Four bar chain mechanism.
2.3 Klein’s construction for single slider cranks mechanism.
3
Cam and cam profile
3.1 Introduction, functions and types of cams and cam followers.
3.2 Types of motions and displacement for different types of cam and cam followers.
3.3 Construct different types of cam profiles.
4
Friction
4.1 Concept and laws of friction.
4.2 Appreciate the role of friction in thrust bearing, pivot bearing and collars considering - Uniform pressure and Uniform wear condition.
4.3 Clutch:
i. Functions.
ii. Types with sketches and working.
4.4 Brakes:
i. Functions.
ii. Types with sketches and working.
4.5 Dynamometers- types and operational working principles.
5
Power transmission
5.1 Introduction, need and modes of power transmission.
5.2 Types of power transmission.
5.3 Belt drive- types, terminology and standards/designation methods as per BIS/ISO.
5.4 Belt speed-co-efficient of friction, velocity ratios and slip.
5.5 Power transmitted by flat belt - tensions, centrifugal tensions, maximum tension, condition for transmitting maximum power and initial tension.(with derivations), numerical examples.
5.6 Merits and demerits of power transmission drives.
5.7 Gear trains-types, numerical examples and applications.
6
Flywheel and governor
6.1 Turning moment diagram:
i. Concept.
ii. Its use for different machines.
iii. Fluctuations of energy.
6.2 Co-efficient of fluctuation of speed and energy.
6.3 Method to construct turning moment diagram, numerical examples.
6.4 Flywheel: functions and types.
6.5 Moment of inertia and mass calculation of flywheel-numerical examples.
6.6 Governors: terminology, types & functions.
7
Balancing and vibrations
7.1 Concepts and types of balancing.
7.2 Effects of unbalanced masses.
7.3 Balancing of revolving masses in same plane:
i. Analytical and graphical methods to find balancing mass.
ii. Numeric examples.
7.4 Balancing of reciprocating masses. (No numerical examples).
7.5 Vibration:
i. Terminology.
ii. Effects.
iii. Causes.
iv. Remedies.