5. A plate clutch consists of a flat driven plate gripped between a driving plate and presser plate so that there are two active driving surfaces, cach having an inner diameter 200 mm and an outer diameter 350 mm. u 0-4. The working pressure is limited to 170 kN/m?. Assuming the pressure is uniform, calculate the power which can be transmitted at 1000 rev/min. If the clutch becomes worn so that the intensity of pressure is inverscly proportional to the radius, the total axial force on the presser plate remaining unaltered, calculate the power which can now be transmitted at 1000 rev/min and the greatest intensity of pressure on the friction surfaces. (U. Lond.) (Answer: 130KW; 127 kW; 234 kN/m²)

5. A plate clutch consists of a flat driven plate gripped between a driving plate and presser plate so that there are two active driving surfaces, cach having an inner diameter 200 mm and an outer diameter 350 mm. u 0-4. The working pressure is limited to 170 kN/m?. Assuming the pressure is uniform, calculate the power which can be transmitted at 1000 rev/min. If the clutch becomes worn so that the intensity of pressure is inverscly proportional to the radius, the total axial force on the presser plate remaining unaltered, calculate the power which can now be transmitted at 1000 rev/min and the greatest intensity of pressure on the friction surfaces. (U. Lond.) (Answer: 130KW; 127 kW; 234 kN/m²)

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.76P: The clutch described in Prob. 7.75 is to transmit a torque of 120lbft when the total spring force...

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.

Question

5. A plate clutch consists of a flat driven plate gripped between a driving plate and
presser plate so that there are two active driving surfaces, cach having an inner diameter
200 mm and an outer diameter 350 mm. µ = 0-4. The working pressure is limited to
170 kN/m2. Assuming the pressure is uniform, calculate the power which can be
transmitted at 1000 rev/min. If the clutch becomes worn so that the intensity of
pressure is inverscly proportional to the radius, the total axial force on the presser
plate remaining unaltered, calculate the power which can now be transmitted at
1000 rev/min and the greatest intensity of pressure on the friction surfaces. (U. Lond.)
(Answer: 130kW; 127kW; 234 kN/m²)

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