A solid bar having a diameter of 100mm is to be replaced by an elliptical tube having a cross sectional dimensions to the median line of the cross section as shown.
(a)Determine the angle of twist in degree of a solid bar if the length is 1000mm, G = 75000MPa and the applied torque is 5KN.m
(b)Determine the required thickness of the elliptical tube so that the maximum shear stress in the tube will not exceed the maximum shear stress in the solid bar.
Extracted text: A solid bar having a diameter of 100mm is to be replaced by an elliptical tube having a cross sectional dimensions to the median line of the cross section as shown 100mm 150mm 300mm