CAD Online Assignment-2

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Problem-1


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Pb-1 : A multi disk clutch consists of 8 steel plates and 5 bronze plates. The inner and outer diameter of friction disks are 81mm and 211mmrespectively. The co-efficient of friction is 0.1 and the intensity of pressure is limited to 0.3N/mm2. Assuming uniform pressure theory and wear theory. Calculate Power transmitting capacity at 856rpm

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Problem-2


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Pb-2 :An automotive type internal expanding double shoe brake is shown in figure. The face width of the friction lining is 48mm and the maximum intensity of normal pressure is limited to 2N/mm2 . The co-efficient of friction is 0.32. The angle A1 can be assumed as zero.
Dimensions of the brake are given below.
A2 =107
R=170
d1=118
d2= 73
d3=42
Calculate operationg force P1 and P2.



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