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Sathyabama Institute of Science and Technology B.E. - Mechanical Engineering SMEA1601 Design of Transmission Systems Syllabus

SATHYABAMA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL OF MECHANICAL ENGINEERING

SMEA1601 DESIGN OF TRANSMISSION SYSTEMS
L T P Credits Total Marks
3 * 0 3 100

UNIT 1 DESIGN OF FLEXIBLE DRIVES 9 Hrs.
Design of Flat belts and pulleys – Selection of V belts and pulleys – Selection of hoisting wire ropes and pulleys- Design of
Transmission chains and Sprockets.

UNIT 2 SPUR GEARS AND PARALLEL AXIS HELICAL GEARS 9 Hrs.
Speed ratios and number of teeth-Force analysis- Tooth stresses –Dynamic effects-Fatigue strength-Factor of Safety-Gear
materials-Design of Straight tooth spur and helical gears based on strength and wear considerations- Pressure angle in the
normal and transverse plane –Equivalent number of teeth – Forces for helical gears.

UNIT 3 BEVEL AND WORM GEARS 9 Hrs.
Straight bevel gear: Tooth terminology- Design of pair of straight bevel gears - Tooth forces and stresses Worm Gear:
Merits and demerits- Terminology. Design of the worm and gear - Forces and stresses, efficiency.

UNIT 4 GEAR BOXES 9 Hrs.
Geometric progression - Standard step ratio - Ray diagram, kinematics layout -Design of slidingmesh gear box -Constant
mesh gear box. - Design of multi speed gear box.

UNIT 5 CLUTCHES AND BRAKES 9 Hrs.
Design of plate clutches –Cone clutches – Centrifugal clutches- Electromagnetic clutches. Band and Block brakes- External
shoe brakes – Internal expanding shoe brake.
Max. 45 Hrs.

COURSE OUTCOMES
On completion of the course, student will be able to
CO1 - Recognize the need for friction drives and positive drives.
CO2 - Design of spur and helical gears.
CO3 - Design Bevel and worm gears based on strength and wear consideration.
CO4 - Design various types of gear boxes
CO5 - Understand the Mechanical Design procedure of clutches and brakes
CO6 - Design transmission components used in engine and machines

TEXT / REFERENCE BOOKS
1. Bhandari V, “Design of machine elements”, 4th Edition, Tata Mcgraw Hill Book Company, 2017.
2. Joseph Shigley, Charles Mischke, Richard Budynas and Keith Nisbett ―Mechanical.
3. Engineering Design, 8th Edition, Tata McGraw-Hill, 2008.
4. Prabhu. T.J., ―Design of Transmission Elements, Mani Offset, Chennai, 2000.
5. Sundararajamoorthy T. V, Shanmugam .N, ―Machine Design, Anuradha Publications, Chennai, 2003.
6. GitinMaitra, L. Prasad ―Hand book of Mechanical Design, 2nd Edition, Tata McGraw-Hill, 2001.
7. C.S.Sharma, Kamlesh Purohit, ―Design of Machine Elements, Prentice Hall of India, Pvt. Ltd., 2003.
8. Bernard Hamrock, Steven Schmid, Bo Jacobson, ―Fundamentals of Machine Elements, 2nd Edition, Tata McGraw-Hill
Book Co., 2006.

END SEMESTER EXAMINATION QUESTION PAPER PATTERN
Max. Marks : 100 Exam Duration: 3 Hrs.
PART A: 10 Questions of 2 marks each – No choice 20 Marks
PART B: 2 Questions from each unit with internal choice, each carrying 16 marks 80 Marks