JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY ANANTAPUR
B.Tech. III-I Sem (M.E) (9A03502) DYNAMICS OF MACHINERY
UNIT – I
PRECESSION: Gyroscopes, effect of precession motion on the stability of moving vehicles such as motor car, motor cycle, aero
planes and ships.
UNIT – II
FRICTION: Inclined plane, friction of screw and nuts, pivot and collar, uniform pressure, uniform wear, Friction circle and friction
axis : lubricated surfaces, boundary friction, film lubrication.
CLUTCHES: Friction clutches- Single Disc or plate clutch, Multiple Disc Clutch, Cone Clutch, Centrifugal Clutch.
BRAKES AND DYNAMOMETERS: Simple block brakes, internal expanding brake, band brake of vehicle. Dynamometers –
absorption and transmission types. General description and methods of Operation.
UNIT – IV
TURNING MOMENT DIAGRAM AND FLY WHEELS: Turning moment diagrams for steam engine, I.C. Engine and multi cylinder
engine. Crank effort - coefficient of Fluctuation of energy, coefficient of Fluctuation of speed – Fly wheels and their design.
GOVERNORS: Watt, Porter and Proell governors. Spring loaded governors – Hartnell and Hartung governors with auxiliary
springs. Sensitiveness, isochronism and hunting –effort and power of a governor.
UNIT – VI
BALANCING: Balancing of rotating masses - single and multiple – single and different planes.
BALANCING OF RECIPROCATING MASSES: Primary, Secondary and higher balancing of reciprocating masses. Analytical
and graphical methods. Unbalanced forces and couples – V, multi cylinder, in -line and radial engines for primary and secondary
balancing, locomotive balancing – Hammer blow, Swaying couple, variation of tractive force.
UNIT – VIII
VIBRATION: Free Vibration of mass attached to vertical spring – oscillation of pendulums, centers of oscillation and suspension.
Transverse loads, vibrations of beams with concentrated and distributed loads. Dunkerly’s method, Raleigh’s method. Whirling of
shafts, critical speeds, torsional vibrations, two and three rotor systems. Simple problems on forced, damped vibration, Vibration
Isolation & Transmissibility
TEXT BOOKS :
1. Thoery of Machines, S.S Ratan, MGH
2. Theory of machines, Khurmi, S.Chand.
1. Mechanism and Machine Theory, JS Rao and RV Dukkipati, New Age Publ.
2. Dynamics of Machinery, Ballaney, Dhanpat Rai
3. Theory of Machines, Thomas Bevan, CBS Publishers
4. Theory of Machines, Jagadish Lal & J.M.Shah, Metropolitan.