Introduction:
Definitions Link or element, Kinematic pairs, Degrees of freedom, Grubler’s criterion (without derivation), Kinematic chain, Mechanism, Structure, Mobility of Mechanisms (with problems), Inversion, Machine. Inversion of single slider and four bar mechanisms. Intermittent Motion - Geneva wheel mechanism and Ratchet and Pawl mechanism. Steering gear mechanism, Ackerman steering gear
Gears and Gear Trains:
Gear terminology, law of gearing, Path of contact Arc of contact, Contact ratio of spur gears. Simple gear trains, Compound gear trains for large speed. Reduction, Epicyclic gear trains. Tabular methods of finding velocity ratio of epicyclic gear trains.
Cams:
Types of cams, Types of followers. Displacement, Velocity and, Acceleration time curve for cam profiles. Disc cam with reciprocating follower having knife-edge, roller follower, Disc cam with oscillating roller follower. Follower motions including SHM, Uniform acceleration and retardation and Cycloidal motion.
Balancing of Rotating Masses:
Static and dynamic balancing. Balancing of single rotating mass by balancing masses in same plane and in different planes.Balancing of several rotating masses by balancing masses in same plane and in different planes.
Belt Drivers: Belt Drives:
Flat Belt Drives, Ratio of Belt Tensions, Centrifugal Tension, power Transmitted.
Gyroscope:
Vectorial Representation of Angular Motion, Gyroscopic Couple. Effect of Gyroscopic Couple on Ship, Plane Disc, Aircraft, Stability of Two Wheelers.
Governors:
Types of governors; force analysis of Porter and Hartnell governors. Controlling force, stability, sensitiveness, isochronism, effort and power.
Course outcomes:
At the end of the course, the student will have:
1. Have fundamental knowledge of Kinematics and Dynamics of Machines.
2. Understand the geometry and the motion of the parts of a machine and forces that produces this motion.
3. Determine the mobility, power loss due to friction in various machine elements, balancing mass and its position, stability of a governor and effect of gyroscopic couple on plane disk, Aircraft, stability of two wheelers and ship.
4. Construction of different types of cam profiles for a given data.
TEXT BOOKS:
1. Theory of Machines: Sadhu Singh, Pearson Education, 2nd edition, 2007.
2. Theory of Machines: Rattan S.S Tata McGraw Hill Publishing Company Ltd., New Delhi, 2nd Edition, 2006.
3. Theory of Machines, R. S. Khurmi, J. K. Gupta, Eurasia Publishing House, 2008 Revised Edition.
REFERENCE BOOKS
1. Theory of Machines and Mechanisms, John Joseph Uicker, G. R. Pennock, Joseph Edward Shigley, Oxford University Press, 2003.
2. Theory of Machines and Mechanisms, Amitabha Ghosh and Mallick, East West Press, 3rd Edition 2006.
3. Theory of Machines, Thomas Bevan, CBS Publication 1984.