The tube has a length of 2 m and is made of an elastic perfectly plastic material as shown. Determine the torque needed to just cause the material to become fully plastic. What is the permanent angle of twist of the tube when this torque is removed?
Problem 5-140The tube has a length of 2 m and is made of an elastic perfectly plastic material as shown.Determine the torque needed to just cause the material to become fully plastic. What is thepermanent angle of twist of the tube when this torque is removed Step-by-step solution Step 1 of 5 Calculate the elastic plastic torque. co 2 TP 2 Y d ci 2 = Y ( )c o ……..(1) 3 ci 2 = Y (c c ) 3 3 o i c cHere, shear stress is Y , the outer and inner radii of the shaft are oand i respectively.