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1
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System Design Approach:
Ergonomic and Aesthetic considerations in design, Design synthesis, Design for
reliability.
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2
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Design of Power Transmission Mechanism:
Type of coupling, Muff coupling, Split Muff coupling, Flange coupling, Bush pin type
coupling, Flat belts and CI pulley.
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3
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Design of Simple and Band Brakes:
Energy equation, Block brake with short shoe and long shoe, Pivoted block brake with
long shoe, Simple band brake, Differential band brake.
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4
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Design of Spur Gear :
Gear terminology, speed ratio and number of teeth, Force analysis, Tooth stresses,
Dynamic effects, Fatigue strength, Factor of safety, Gear material, Module and Face
width, Power rating calculation based on strength and wear calculation.
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5
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Design of Journal bearing and Selection of Rolling contact bearings:
Method of lubrication, Hydrodynamic, Hydrostatic boundary, Minimum film
thickness, Thermal equilibrium, Selection of antifriction bearing for different loads
and load cycle.
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6
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Design of curved beam:
Stress distribution in curved beam for different cross sections
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7
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Design of hoisting mechanism:
Design of crane hook, wire rope and sheaves, Design of tackle and pins.
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8
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Design for cyclic loading:
Types of cyclic load, Stress concentration, Endurance limit, Low cycle and high cycle
fatigue, Notch sensitivity, Reversed stresses, Design for finite and infinite life,
Cumulative damage, Soderberg criteria, Modified Goodman criteria, Gerber criteria,
Design for infinite life under fluctuating load.
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