Question

Question 5 A multi-disc friction clutch has to be desıgned to transmıt 75 kW from a motor running at 1440rev/mın The discs are to have an outer diameter of 200 mm and an ınsıde diameter of 150 mm Assume condıtion of uniform wear and that the maximum design pressure is lmited to 150 kPa Assume μ-0 25 (12) 5 1 Determine the necessary end thrust and the necessary number of plates After this clutch (from 5 1) in manufactured it is used to transmit power to a rotor which has a mass of 200 kg and a radius of gyration of 180 mm The external work done by the engine absorbs a constant torque of 300 Nm 5 2 Determine the time required for this rotor to reach 1440 rev/mun [20]

Answer 1

S의:- 6O 3 CO T = 497.36 N-M 150KPa l max n a)x 1767-14-5 N 49 736-о.asx17670145x(의け。0759xy = 18-866 13 5.2 300x (oi8) 七 GO