Question

A36 steel bar (D = 2.5in, L = 12 in) is subjected to torque. The twist angle is 6.5 degrees.

What is the applied torque? The corresponding maximum and minimum shearing stress in the bar? (G=29,000,000 psi)

Answer 1

Solution:

Given data

D = 2.5 in, L = 12 in

G = 29000000 psi

Calculating Applied Torque:

OR

OR

Calculating Minimum and Maximum Shear Stress:

(i) Minimum Shear Stress:( At Centre )

For minimum shear stress, c = 0

(i) Maximum Shear Stress:( At Outmost Fibre )

For maximum shear stress, c = D/2