A hollow shaft is subjected to a steady bending moment of 40 N-m and twisting moment of 50 N/m. Outer diameter of the shaft is twice the inside diameter. Calculate the diameters of the shaft using ASME Code for transmission shafting on the basis of maximum shearing stress theory of failure. Take:
Yield point stress in tension of shaft material = 280 MPa Factor of safety = 2.0
Combined bending and fatigue shock factor = 1.5
Combined shock and fatigue factor for twisting = 1.0