Course Details

Subject {L-T-P / C} : ME3102 : Dynamics of Machinery { 3-0-0 / 3}

Subject Nature : Theory

Coordinator : Prof. Haraprasad Roy

Syllabus

Force analysis: Static forces in 4-bar mechanism, slider-crank mechanism, quick-return mechanism, reciprocating engine mechanism with sliding friction. Plane motion of rigid body, inertia forces of a reciprocating engine mechanism, four-bar mechanism, shaking forces and moments, Dynamics of reciprocating engine mechanism (analytical method) and its bearing loads.
Turning moment diagram and flywheel: Fluctuation of crank shaft speed, flywheel in IC engine, punching press, Analytical expression for turning moment.
Balancing: Unbalance in one and several planes, static and dynamic unbalance, balancing machines, field balancing, balancing a single-cylinder and multi-cylinder engines, analytical technique for balancing of multicylinder reciprocating engines, balancing of linkages and machines, V and radial engines, graphical and analytical methods, method of direct and reverse cranks, dynamic balancing machines.
Cam dynamics: Cam profile construction, tangent cam, Analysis of eccentric cam, Analysis of disc cam with roller follower, Gyroscope: Gyroscopic couple - Plane disc, Two bladed air screw, Analysis of the forces on bearings due to the forced precession of rotating disc mounted on shafts, Gyroscopic effects on a two wheel and a four wheel vehicle, Gyroscopic stabilization
Governors and Gyroscopes: Types of governors, performance parameters, Governor effort and power, controlling force, friction and insensitiveness, centrifugal effect of revolving arms, gyroscopic forces and couple, Stabilization of 4-wheeled vehicle on curved path and 2-wheeled vehicle taking a turn
Vibration Analysis: Natural frequency, equivalent system, energy method, Free vibration response, damping, single degree of freedom system with viscous damping, Logarithmic decrement, forced vibration, Base excitation, Vibration isolation, bending critical speeds of simple and multi-mass shafts, torsional system.

Course Objectives

Course Outcomes

CO1: Knowledge will be gained on the subject matter. <br />CO2: Able to apply the theory to practical problems. <br />CO3: Knowledge will be enhanced to implement the concept for product development.

Essential Reading

Supplementary Reading