AU3501 Mechanics of Machines Syllabus:
AU3501 Mechanics of Machines Syllabus – Anna University Regulation 2021
COURSE OBJECTIVES:
The objective of this course is to prepare the students to acquire knowledge and skills to analyze various types of kinematic mechanisms, cams and gears, effect of friction in power transmission, vibration and balancing.
UNIT I MECHANISMS
Definition – Machine and Structure – Kinematic link, pair and chain – classification of Kinematic pairs – Constraint and motion – Degrees of freedom – Slider crank – single and double – Crank rocker mechanisms – Inversions, applications – Introduction to Kinematic analysis and synthesis of simple mechanisms – Determination of velocity and acceleration of simple mechanisms.
UNIT II FRICTION
Types of friction – friction in screw and nut – screw jack – pivot, collar and thrust bearings – plate and cone clutch – belt (Flat and V) and rope drives – creep in belts – open and crossed belt drives – Ratio of tensions – Effect of centrifugal and initial tensions – condition for maximum power transmission.
UNIT III GEARS AND CAMS
Gear – Types and profile – nomenclature of spur and helical gears – laws of gearing – interference – requirement of minimum number of teeth in gears – gear trains – simple, compound and reverted gear trains – determination of speed and torque in epicyclic gear trains – cams different types of followers – Cam – Types of cams and followers – Cam design for different follower motions.
UNIT IV VIBRATION
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 multi-rotor systems – geared shafts – critical speed of shafts.
UNIT V BALANCING
Static and dynamic balancing – single and several masses in different planes – primary and secondary balancing of reciprocating masses – Balancing of single and multi-cylinder engines – Governors and Gyroscopic effects.
COURSE OUTCOMES:
At the end of the course, students will be able to:
1. Apply the concepts of kinematics and dynamics of machinery in design and analysis of engineering problems.
2. Demonstrate the ability to synthesize and analysis mechanisms
3. Design and analyze cam and their motion.
4. Select the gears and gear trains for their applications.
5. Examine the concept of free, forced and damped vibrations.
TEXT BOOKS:
1. Bansal R.K., “Theory of Machines”, Laxmi Publications Pvt Ltd., New Delhi, 20th edition 2009.
2. Rattan S.S., “Theory of machines”, Tata McGraw Hill publishing Co., New Delhi, 2nd edition 2011.
REFERENCES:
1. Gosh A and Mallick A.K., “Theory of Machines and Mechanisms”, Affiliated East West press, 2009.
2. Malhotra D.R. and Gupta H.C ,“The Theory of machines”, Satya Prakasam, Tech. India Publications, 2008.
3. Rao J.S. and Dukkipati R.V., “Mechanism and Machine Theory”, Second Edition, Wiley Eastern Limited, 2006.
4. Shigley J.E. and Uicker J.J., “Theory of Machines and Mechanisms”, McGraw Hill, 2006.
5. Ambekar A.G., “Mechanism and Machine Theory”, PHI India Pvt Ltd, 2007