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SYLLABUS

UNIT-I

Design of Curved Beams Stresses in curved beams, Expression for radius of neutral axis for rectangular, Circular, Trapezoidal and T-section. Design of crane hooks, C-clamps. Design of Power Transmission Systems Design of flat belt drives, V-belt drives and rope drives. Selection of wire ropes, Design procedure for chain drives.

UNIT-II

Design of mechanical springs Stress and deflections of helical springs-springs for fatigue loading – Natural frequency of helical springs – Energy storage capacity – Helical torsion springs – Design of leaf springs. design of power screws Design of screw – Square, ACME and buttress screws – Efficiency of the screw. Design of compound screw, Differential screw, Ball screw – Possible failures.

UNIT-III

Design of bearings Types of journal bearings – Lubrication – Bearing materials – Journal bearing design – Ball and roller bearings – Static loading of ball and roller bearings, Bearing life – Failure of bearings.

UNIT-IV

Design of spur and helical gears Spur gears – Helical gears – Bending strength – Design analysis of spur and helical gears – Estimation of centre distance, Module and face width. Check for dynamic and wear considerations.

UNIT-V

Design of ic engine parts Pistons – Design of piston. Cylinder, Connecting rod. Crank shafts – Centre and over hung cranks.