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Unit 1 Force Analysis


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Mechanical Vibrations.pdf


brakes and dynamometers.pdf


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Unit I
Force analysis:
Static force analysis of mechanisms, D’Alembert’s Principle, dynamics of rigid link in plane
motion, dynamic force analysis of planar mechanisms, piston force and crank effort. Turning

moment on crankshaft due to force on piston, Turning moment diagrams for single cylinder
double acting steam engine, four stroke IC engine and multi-cylinder engines, Fluctuation of
speed, Flywheel.

Unit II
Space motion of rigid bodies, angular momentum, gyroscopic couples, gyroscopicstabilization,
ship stabilization, stability of four wheel and two wheel vehicles moving on curved paths.

Mech. Vibrations:
Types of Vibration, Degrees of freedom. Longitudinal Vibration: Single degree free and damped
vibration. Forced vibration of single degree under harmonic excitation.Vibration
isolation.Whirling of shaft and critical speed.

Unit III
Introduction,static balance, dynamic balance, balancing of rotating masses,two plane balancing,
graphical and analytical methods, balancing of reciprocating masses,balancing of single cylinder
engine, balancing of multi cylinder inline engines.

Unit IV
Introduction, types of governors, characteristics of centrifugal governors, gravitycontrolled and
spring controlled centrifugal governors, hunting of centrifugal governors, inertia governors.
Effort and Power of governor, Controlling force diagrams for Porter governor and spring
controlled governors.

Unit V
Brakes and dynamometers:
Introduction, Law of friction and types of lubrication, types of brakes, effect of braking on rear
and front wheels of a four wheeler, dynamometers, belt transmission dynamometer, torsion
dynamometer, hydraulic dynamometer

Text/Reference Books:
1. Kinematics and dynamics of machinery: Wilson and Sadler, Third edition, Pearson.
2. Theory of Mechanisms and Machines: AmitabhaGhosh and Ashok kumarMallik, Third
Edition Affiliated East-West Press.
3. Theory of Machines and Mechanisms: Joseph Edward Shigley and John Joseph Uicker,
Jr. Oxford University Press
4. Kinematics and dynamics of machinery: R L Norton, McGraw Hill
5. Theory of Mchines: S.S. Rattan, McGraw Hill
6. Theory of Mchines: Thomas Bevan, CBS Publishers.


A Helpful Resource for An Engineer.

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