COURSE OBJECTIVES

To design common machine elements and gain experience in solving design problems. To prepare professional quality solutions and communicate the results of analysis and design, effectively.

COURSE LEARNING OUTCOMES (CLO)

CLO-1: Describe designs of common machine elements like gears, bearings, shafts, belts and chains.(C5)
CLO-2: Evaluate the designs of machine elements related to transmission. (C5)
CLO-3: Select a case study related to transmission and explain its design, calculations and working in the form of report and presentation. (A3)

COURSE CONTENTS

  1. Spur, Helical, Bevel and Worm Gears – Ten Lectures
  • Geometry and nomenclature of Spur, Helical, Bevel and Worm Gears
  • Forces in Spur, Helical, worm and Bevel gears.
  • Stress calculations in spur, helical and bevel gears.
  • Material strength calculations for gears.
  • Rating method in Wormsets.

2. Design of Flywheels – Three Lectures

  • Energy variations in a rotating system
  • Determining the flywheel inertia
  • Stresses in flywheels
  • Failure criteria

3. Rolling Element Bearings – Three Lectures

  • Types of Rolling Element Bearings.
  • Failure of Rolling Element Bearings.
  • Selection of Rolling Element Bearings.
    • Basic dynamic load rating
    • Basic static load rating
  • Combined radial and thrust loads
    • Calculation procedures

4. Sliding Contact Bearings – Four Lectures

  • Full-Film Lubrications
  • Boundary Lubrications
  • Hydrodynamic Theory of Lubrication
  • Design of Hydrodynamic Bearings

5. Design of Clutch / Brakes – Five Lectures

  • Different types of clutches and designing concepts
  • Different types of brakes and designing concepts

6. Design of Power Screws – Three Lectures

  • Introduction to power screws
  • Stresses in power screws
  • Efficiency of power screws
  • Applications of power screws

7. Flexible Machine Elements – Four Lectures

  • Introduction to belts
  • Flat and round belt drives
  • Flat metal belts
  • V belts
  • Roller chains
  • Wire ropes