11M 502 Theories of Machines II
Unit I
Force Analysis
Applied and constraint forces
–
Free body diagrams
–
Static equilibrium conditions
–
Two, three &
four members
–
Static force analysis of simple mechanisms
–
Dynamic force analysis
–
Inertia force
and
Inertia torque
–
D Alembert’s principle
–
The principle of superposition
–
Dynamic Analysis in
reciprocating engines
–
Gas forces
–
Equivalent masses
–
Bearing loads
–
Crank shaft torque
Inertia forces in a reciprocating engine considering the weight of
the connecting rod
9 Hours
Unit II
Turning Moment Diagram and Flywheel
Turning Movement Diagram for a Single Cylinder Double acting Steam Engine and Multi Cylinder
Engine. Fluctuation of Energy. Flywheel and Flywheel in Punching Press. Balancing of masses
–
Basics only
Flywheel in printing and cutting machines
9 Hours
Unit III
Balancing
Single Rotating mass by a Single mass rotating in the Same plane and Two masses rotating in
Different planes. Several masses rotating in the Same plane and Different planes
. Partial Balancing of
Unbalanced primary force in a Reciprocating Engine. Partial balancing of Locomotives. Variation of
Tractive force. Swaying Couples. Hammer Blow. Coupled Locomotives. Primary and Secondary
forces of Multi Cylinder In
-
line Engine. Radi
al and V Engines
Effect of Partial Balancing of Reciprocating Parts of TwoCylinder Locomotives
9 Hours
Unit IV
Vibration
Free Vibration. Natural Frequency of free transverse vibration due to a point load, Uniformly
distributed load acting over a Simply Supported beam and Shaft fixed at both ends carrying a
Uniformly distributed load and a shaft subjected to a number of point loads. Critical speed at a shaft.
Viscous Damping. Damping and Magnification Factor. Randam
vibrations. Resonance migration from
one point to another. Isolation and Transmissibility. Free Torsional Vibrations of a Single, Two and
Three Rotor System. Torsionally Equivalant Shaft.
Logarithmic Decrement and Free torsional vibration of a geared syst
em
9 Hours
Unit V
Mechanism for Control
Governors
–
Types
–
Centrifugal governors
–
Gravity controlled and spring controlled centrifugal
governors
–
Characteristics
–
Effect of friction
–
Controlling force
–
Other Governor mechanisms.
Gyroscopes
–
Gyroscop
ic forces and torques
–
Gyroscopic stabilization
–
Gyroscopic effects in
Automobiles, ships and airplanes.
Sensitiveness and Hunting of governor
9 Hours
Total: 45 + 15 Hours
Textbooks
1. S. S. Rattan,
Theory of Machines
, Tata McGraw Hill Publishing Compan
y Pvt Ltd., New Delhi,
2011.
2. John J Uichker and Joesph E. Shigley,
Theory of Machines and Mechanism
, Tata McGraw Hill
Publishing Company Pvt Ltd., New Delhi, 2005.
References
1. Ashok G Ambekar,
Mechanism and Machine Theory
, Prentice Hall of India, New
Delhi, 2009.
2. R. L. Norton,
Kinematics and Dynamics of Machinery
, Tata McGraw Hill Publishing Company
Pvt Ltd., New Delhi, 2005.
3. Sadhu Singh,
Theory of Machines,
Prentice Hall of India, New Delhi, 2007.
4. Syad and R. L. Singal
, Kinematics of Machine
ry
, Tech Mac Publishers, Chennai, 2007.
5. R. L. Norton,
Kinematics and Dynamics of Machinery
, Tata McGraw Hill Publishing Company
Pvt Ltd,, New Delhi, 20
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