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SYLLABUS
UNIT-I
Precession Gyroscopes – Effect of precession motion on the stability of moving vehicles such as motor car, Motor cycle, Aero planes and ships – Static and dynamic force analysis of planar mechanisms, (Demonstration of models in video show).
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 – General description and operation of dynamometers: Prony – Rope Brake – Epicyclic – Bevis Gibson and belt transmission.
UNIT-III
TURNING MOMENT DIAGRAMS Dynamic force analysis of slider crank mechanism – Inertia torque – Angular velocity and acceleration of connecting rod – Crank effort and turning moment diagrams – Fluctuation of energy – Fly wheels and their design.
UNIT-IV
GOVERNERS Watt, Porter and proell governors. Spring loaded governors – Hartnell and hartung with auxiliary springs. Sensitiveness, Isochronism and hunting.
UNIT-V
BALANCING Balancing of rotating masses single and multiple – Single and different planes – Use analytical and graphical methods – Primary, secondary, and higher balancing of reciprocating masses – Analytical and graphical methods, Unbalanced forces and couples – Examination of “V” multi cylinder in line and radial engines for primary and secondary balancing, Locomotive balancing – Hammer blow, swaying couple – Variation of tractive effort.
UNIT-VI
VIBRATIONS Free vibration of spring mass system – Natural frequency – Types of damping – Damped free vibration, Simple problems on forced damped vibration, Vibration isolation and transmissibility transverse loads – Vibrations of beams with concentrated and distributed loads – Dunkerly’s methods – Raleigh’s Method – Whirling of shafts – Critical speeds – Torsional vibrations – Two and three rotor systems.
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CategoriesEngineering
Format EPUB
TypeeBook