Design of Mechanical Transmission Systems

By Prof. Ramkumar P | IIT Madras

Learners enrolled: 727 | Exam registration: 12

ABOUT THE COURSE:

The design of mechanical transmission systems deals with the design of mechanical components involved in transmitting power among systems. The beginning of this course deals with the design of machine tool gearboxes, followed by the design of automobile gearboxes by considering the significance of weight constraint, ray and kinematic diagrams construction, gear material selection, lubricant selection, and design of the gearbox casing. Further, discussed the design of different types of Brakes, dynamic and thermal analysis of two-axle vehicle including selection of friction materials based on vehicle dimensions. Similarly, clutch system by considering the different types, thermal analysis, and selection of friction lining material. Further, design of belt drives is explained. Thus, this course plays a vital role in the safe design of Mechanical Transmission Systems.

INTENDED AUDIENCE: Mechanical Engineering /Automobile Engineering / Engineering Design / Production Engineering

PREREQUISITES: Strength of Materials and Design of Machine Elements

INDUSTRY SUPPORT: Automotive Industry/Gearbox manufacturers/ Brake manufacturers

Summary

Course Status :	Upcoming
Course Type :	Elective
Language for course content :	English
Duration :	12 weeks
Category :	Mechanical Engineering
Credit Points :	3
Level :	Undergraduate/Postgraduate
Start Date :	20 Jan 2025
End Date :	11 Apr 2025
Enrollment Ends :	27 Jan 2025
Exam Registration Ends :	14 Feb 2025
Exam Date :	03 May 2025 IST

Note: This exam date is subject to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1 : Course Introduction, Evaluation, and application of Gearbox, GP, Step Ratio, Preferred Numbers, Structural Formula & Rules of optimum Gearbox, Ray diagram construction.

Week 2 : Machine Tool Gearbox - Kinematic diagram construction, Centre distance and teeth calculation, Problem solving.

Week 3 : Automobile Gearbox - General engine operation and transmission types, Saw tooth diagram and design procedure for gearbox, Problem solving, tyre specification.

Week 4 : Basic transmission types and kinematic diagram, Gear failures and material selection, module calculation concept – part I.

Week 5 : Module calculation concept – part II, shaft design, lubrication selection and method, bearing selection and gearbox losses.

Week 6 : Brake - Introduction, working principle and types, Torque requirement for drum brake systems, Problem solving.

Week 7 : Torque requirement for disc brake systems, static and dynamic analysis, dynamic analysis – brake force distribution and optimum.

Week 8 : Problem solving, Braking efficiency & distance and brake factor, Problem solving and friction materials.

Week 9 : Thermal analysis and braking conditions, Energy and power, braking power absorbed by lining and drum/disc, Single stop braking and repeated braking – temperature analysis.

Week 10 : Brake - Thermal analysis problem solving.

Clutch: Types and working method, Torque transmitting capacity – uniform pressure & wear theories.

Week 11 : Clutch - Multiple discs and cone clutches, problem solving, Centrifugal clutch, Dynamic analysis

Week 12 : Clutch - Dynamic analysis problem solving

Belt Drives - Introduction and types, Geometrical relationship for open and crossed belt drives - V and micro-v belts, Selection of V and micro-v belts, V and micro-v pulley design.

Books and references

• P.H. Joshi (2007), Machine Tools Handbook – Design and Operation, Tata McGraw Hill, New Delhi

• N. K. Mehta (2010), Machine Tool Design and Numerical Control, McGraw Hill, New Delhi.

• G. Lechner and H. Naunheimer (1999), Automotive Transmissions: Fundamentals, Selection, Design and Application, Springer, Berlin.

• Peter Lynwander (1983), Gear Drive Systems : Design and Application, Marcel Dekker Inc, New York.

• Stephen P radzevich (2012), Dudley’s Handbook of Practical Gear Design and Manufacture, CRC Press, New York.

• Damir Jelaska (2012), Gears and Gear Drives, Wiley Publication,Chichester, UK

• Gitan Maitra (2001), Handbook of Gear Design, Tata McGraw Hill, New Delhi.

• A. Stokes (1992), Manual Gearbox Design, Butterworth Heinemann.

• U.C. Jindal (2010), Machine Design, Pearson, New Delhi.

• N.A. Rothbart (1995), Mechanical Design and Systems Handbook, MaGraw Hill Book Co., New York.

• T.P. Newcombe and R.I. Spur (1969), The Braking of Road Vehicles, Chapman and Hall Ltd., London.

• Andrew J Day et al (2013), Braking of Road Vehicles, University of Bradford, UK

• Rudalf Limpert (1992), Brake Design and Safety, SAE, Philadelphia, USA

• Bert Breuer and Uwe Dausend, Advanced Brake Technology, SAE, Philadelphia, USA.

• Neimann (1980), Machine Elements, Allied Publisher, New Delhi.

• H.H. Mabie, and F.W. Ocvirk (1976), Mechanisms of and Dynamicsof Machinery, John Wiley.

• J.E. Shigley (1989), Mechanical Engineering Design, McGraw Hill.

Instructor bio

Prof. Ramkumar P

IIT Madras

Prof. Ramkumar P is currently working as an Associate Professor in the Department of Mechanical Engineering, IIT Madras. He did B.E (Mechanical Engineering) from College of Engineering, Guindy, Anna University and his M.Tech (Industrial Tribology) from IITM. He obtained his Ph.D. (engine tribology) from University of Southampton, UK and did PDF from University of Leicester, UK. He has 16 years research and teaching experience in the field of tribology and mechanical design. He won the IMechE best presentation award for his PhD and published more than 35+ papers in peerreviewed journals and 50+ international conference proceedings including one patent.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.

The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).

Date and Time of Exams: May 3, 2025 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.

Registration url: Announcements will be made when the registration form is open for registrations.

The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.

Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.

CRITERIA TO GET A CERTIFICATE

Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.

Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

Please note that assignments encompass all types (including quizzes, programming tasks, and essay submissions) available in the specific week.

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team