PR8451 - MECHANICS OF MACHINES (Syllabus) 2017-regulation Anna University

PR8451 - MECHANICS OF MACHINES (Syllabus) 2017-regulation Anna University

PR8451

MECHANICS OF MACHINES

 LPTC

3003

OBJECTIVES:
• To understand the principles in the formation of mechanisms and their kinematics.
• To understand the effect of friction in different machine elements.
• To understand the importance of balancing and vibration.

UNIT I

KINEMATICS OF MACHINES

9

Mechanisms – Terminology and definitions – kinematics inversions of 4 bar and slide crank chain – kinematics analysis in simple mechanisms – velocity and acceleration polygons – Cam and followers – classifications – displacement diagrams - layout of plate cam profiles – derivatives of followers motion

UNIT II

GEARS and GEAR TRAINS

9

Spur gear – law of toothed gearing – involute gearing – Interchangeable gears – Gear tooth action interference and undercutting – nonstandard teeth – gear trains – parallel axis gears trains – epicyclic gear trains.


UNIT III

FRICTION

9

Types of friction – Friction Drives -friction in screw threads – bearings – Friction clutches – Belt drives

UNIT IV

BALANCING AND MECHANISM FOR CONTROL

9

Static and Dynamic balancing – Balancing of revolving and reciprocating masses – Balancing machines -Balancing a single cylinder engine – Balancing of Multi-cylinder inline, V-engines – Partial balancing in engines- Governors and Gyroscopic effects..

UNIT V

VIBRATION

9

Free, forced and damped vibrations of single degree of freedom systems – force transmitted to supports – vibration Isolation – vibration absorption – torsional vibration of shafts – single and multirotor systems – geared shafts – critical speed of shafts.

TOTAL : 45 PERIODS

OUTCOMES: Student will be able to
• Understand the principles in the formation of mechanisms and their kinematics.
• Understand the construction features of Gears and Gear Trains.
• Understand the effect of friction in different machine elements.
• Understand the importance of balancing.
• Understand the importance of Governors and Gyroscopic effects.
• Understand the importance of vibration.

TEXT BOOKS:
1. Ambekar A.G.,Mechanism and Machine Theory‖ Prentice Hall of India, New Delhi, 2007
2. Shigley J.E., Pennock G.R and Uicker J.J., ―Theory of Machines and Mechanisms‖, Oxford University Press, 2003

REFERENCES:
1. Ghosh.A, and A.K.Mallick, ―Theory and Machine ‖, Affiliated East-West Pvt. Ltd., New Delhi, 1988.
2. Ramamurthi. V., "Mechanisms of Machine", Narosa Publishing House, 2005.
3. Rao.J.S. and Dukkipatti R.V. ―Mechanisms and Machines ‖, Wiley-Eastern Ltd., New Delhi, 1998.
4. Robert L.Norton, "Design of Machinery", McGraw-Hill, 2012.
5. Thomas Bevan, ―Theory of Machines‖, CBS Publishers and Distributors, 2010.

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