6ME1-DESIGN OF MACHINE ELEMENTS- II |
Units: I |
Fatigue Considerations in Design: Variable load, loading pattern, Endurance stresses,
influence of size, surface finish, notch sensitivity & stress concentration. Goodman line,
Soderberg, Design of machine members subjected to combined, steady and alternating
stresses. Design for finite life. Design of Shafts under Variable Stresses.
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Units: II |
Pre loading of bolts; effect of initial tension & applied loads, Bolts subjected to variable
stresses. Design of members which are curved like crane hook, body of C-clamp, machine
frame etc. Power screws like lead screw, screw jack. |
Units: III |
Design of helical compression, tension, torsional springs. Springs under variable
stresses. Design of belt, rope and pulley drive system, selection of chain & sprocket
drive systems.
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Units: IV |
Design of gear teeth, Lewis and Buckingham equations; wear and dynamic load
considerations, Design and force analysis of spur, helical, bevel and worm gears. Bearing
reactions due to gear tooth forces.
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Units: V |
Design of sliding & journal bearing; method of lubrication, hydrodynamic, hydrostatic,
boundary
etc. Minimum film thickness and thermal equilibrium.
Selection of anti-friction bearings for different loads and load cycles. Mounting of the
bearings.
Method of lubrication, selection of oil seals.
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