ME281

Mechanics of Machines

Course ID
ME281
Department
Mechanical Engineering
Level
Undergraduate
Instructor
Semester
3rd Semester
Credit
2.0

After completion of this course each student would be able to:

  • UNDERSTAND the concept of mechanics for the design of machine elements/linkages.
  • CALCULATE the kinematics characteristics of mechanics such as linkages, cams, and gears.
  • DEMONSTRATE the motion characteristics of various mechanisms

The Mechanics of Machines is a compulsory course and has been offered by the Department of Mechanical Engineering.

Course Learning Outcomes

CLO

Description

Level of Learning

PLO No.

1.

UNDERSTAND the concept of mechanics for the design of machine elements/linkages

C2

1

2.

CALCULATE the kinematics characteristics of mechanics such as linkages, cams, and gears.

C4

3

3.

DEMONSTRATE the motion characteristics of various mechanisms

 P3

1

Course structure and modules

Course contents

·       Fundamentals of linkages:

Kinematic links, pairs, joints, kinematic chain & its types, mechanism & its inversion, kinematic diagrams & degree of freedom of a mechanism, Grashof’s criteria, four-bar mechanism & its categories, single slider crank chain, double slider crank chain.

·       Kinematic analysis of mechanisms:

Graphical & analytical methods of position analysis, Instantaneous center of rotation, types, methods of locating instantaneous centers, graphical & analytical methods of velocity analysis. 

·       Cams & Followers:

Types of cams & followers, Terminology of radial cam, motion schemes, displacement diagrams, generation of cam profiles.

·       Gears & Gear trains:

Types of gears, tooth geometry & manufacture, spur gear terminology, length of path of contact, arc of contact and contact ratio, interference in gears, rack and pinion kinematics, Gear train and its types, velocity ratios of gear trains, Helical, bevel and worm gear kinematics, advantages and limitations of each gear.

Recommended Books

·       J.E. Shigley, “Theory of Machines”, McGraw Hill, 1st Edition, 1961.

·       David H. Myszka, “Machines and Mechanisms”, Prentice Hall, 3rd  Edition, 2005.

·       J.E. Shigley, John Joseph Uicker Jr. “Theory of Machines and Mechanisms”, McGraw Hill, Latest Edition.

·       R. S. KhurmiJ. K. Gupta, “Theory of Machines”, Eurasia Publishing House, Latest Edition.