The steel tube has an elliptical cross section of mean dimensions shown and a constant thickness of t 0 2 in If the allowable shear stress is Iuml allow 8 ksi, and the tube is to resist a torque of T 250 lb ft, determine the necessary dimension b The mean area for the ellipse is A m Iuml b(0 5b) 0 ...

The steel tube has an elliptical cross section of mean dimensions shown and a constant thickness of

Question:

The steel tube has an elliptical cross section of mean dimensions shown and a constant thickness of t = 0.2 in. If the allowable shear stress is Ï„_allow= 8 ksi, and the tube is to resist a torque of T = 250 lb ˆ™ ft, determine the necessary dimension b. The mean area for the ellipse is A_m= Ï€b(0.5b).

0.5b 250 Ib-ft