Kinematic links, kinematic pairs, and kinematic chain
Mechanism and classification of mechanisms
Inversions of mechanism
Mobility
Grubler criterion
Grashof's law
Cams (4 hours)
Classification of cams and followers
Terminology and definitions
Standard motions of follower
Cam profile synthesis for standard motions of follower
Gears (6 hours)
Classification of gears; terminology and definitions
Gear tooth profiles; meshing of gear teeth
Interference and undercutting
Contact ratio and center distance
Terminology and definitions of helical, bevel, and worm and worm gears
Kinematics of helical, bevel, and worm and worm gears
Gear Trains (5 hours)
Classification of gear trains
Speed ratio of gear trains
Analysis of epicyclic gear trains: formula and tabular methods
Torques in epicyclic gear trains
All-wheel drive train
Fundamentals of Machine Design (6 hours)
Theories of failure for static loading
Stress concentration and notch sensitivity
Endurance limit and fatigue strength
Characterizing fluctuating stresses
Fatigue failure criteria for fluctuating stress
Design for fatigue under fluctuating stress
Shaft (7 hours)
Shaft materials
Shaft design for stress
Shaft design for variable load
Effect of stress concentration
Spur Gear (6 hours)
Gear materials
Beam strength of spur gear tooth
Dynamic load on gear
Wear strength
Design of a gear mesh
Belt (7 hours)
Belt drives
Belt materials
Design of flat belt and V-belt
Practicals
Design Project I: introductory design project combining the design process with required analysis and drawing for communication of results, with justification of decision-making
Design Project II: advanced machine design systems project using a team approach, with planned work division, deadlines, detailed drawings and (if appropriate) oral presentations
Evaluation
Final exam questions cover all chapters. Approximate marks distribution (total 60 marks over 45 hours):
