Engineering Statics · Trusses, frames, and machines
A clutch plate transmits torque through dry friction
Problem
A clutch plate transmits torque through dry friction. The annular contact surface has inner radius 80 mm and outer radius 140 mm. The axial clamping force is 2.5 kN, and the coefficient of static friction is 0.32. Using the uniform-pressure assumption, determine the maximum torque that can be transmitted. Then recompute the torque using the uniform-wear assumption and compare the two results.
Hint
Annular clutch: uniform pressure uses the cubic-radii formula; uniform wear uses the mean-radius formula.
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