The device serves as a compact torsion spring. It is made of A-36 steel and consists of a solid inner shaft CB which is surrounded by and attached to a tube AB using a rigid ring at B. The ring at A can also be assumed rigid and is fixed from rotating. If the allowable shear stress for the material is τ_allow =12 ksi and the angle of twist at C is limited to Ф_allow 3, determine the maximum torque T that can be applied at the end C.

Transcribed Image Text:

0.5 in. 12 in. 12 in. B 0.75 in. 1 in.