Theory of Machines (2151902)

Syllabus

1
Gyroscope

Principle of gyroscope, Definition of axes, active and reactive couples; Roll, Yaw and Pitch motions; Gyroscopic effect in a rotor, two wheelers, Four wheelers, ship and aeroplane.

10
Teaching Hrs

20
Module Weightage

2
Friction Devices: Clutches, Brakes and Dynamometers

Classification of clutches, torque transmission capacity, considerations for uniform wear and uniform pressure theory, single plate and multi-plate clutch, centrifugal clutch, Energy equation and thermal considerations. Classification of brakes, Braking effect, Analysis of Brakes: Block Brake, Band Brake, Band and Block Brake, Internal expansion shoe brake; Braking analysis of four wheelers. Classification of Dynamometers, Analysis of Dynamometers: Prony brake, Rope brake, Hydraulic, Belt Transmission, Epicyclic-Train and Bevis-Gibson torsion.

12
Teaching Hrs

30
Module Weightage

3
Flywheels

Significance of flywheel, Turning moment and crank effort diagrams for reciprocating machines, coefficient of fluctuation of speed and energy, Limiting velocity of flywheel, Design of flywheels for engines and punching machines.

5
Teaching Hrs

15
Module Weightage

4
Governors

Necessity of governor, Classification of Governors, Working principle of centrifugal governors, Concept of control force, Control force diagram, Stability of governor, Condition for stability, Concept of isochronism, Sensitivity of governor, Characteristics of governors, Hunting of governors.

5
Module Weightage

5
Introduction to Dynamics

Newton’s Laws of Motion, Applied and constraint forces, Free-body diagrams, conditions for equilibrium, Two and Three forces members, Four force members, Friction forces, Static force analysis with friction. Centroid and Centre of Mass, Mass Moments and products of inertia, Inertia forces and D’alembert’s Principle. Planar rotation about fixed centre, Shaking forces and moments, Complex algebra approach, Equation of motion. Application of concepts to dynamic analysis of slider-crank mechanism and 4-bar mechanism. Spatial: Measuring mass moment of Inertia, Transformation of Inertia axes, Euler’s equation of motion, Impulse and momentum, Angular impulse and momentum.

15
Teaching Hrs

30
Module Weightage