Question

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A hydraulically operated disk brake (as shown in Figure 18.4) uses a double calliper. Each half has 65 mm diameter round pad on each side of the disk. The centre of contact of each of the four pads is at a radius of 104 mm. The outside diameter of the disk is 320mm and the disk has a woven ining that provides a friction coefficient of 0.4. The average pressure on the pads is to be limited to 472 kPa. What is the maximum torque (in Nm) that can be produced after initial wear in Use pi as exactly 3.14. Answer must be accurate to within 5%.

Answer 1

R. orque Capaciy f dis k hralke given cokeve Moe apaci rao overag e preure x areao ave 472x re, 4(, '다屯.ces 0.95.7 .3125 Me (o4)(022 id) (o.0995)

Table 12.1 Values of 8for circular-pad caliper disk brakes 0.0 0.1 0.2 0.3 0.4 0.5 1.0000 0.9833 0.9693 0.9572 0.9467 0.9375