steel cantilever is 200mm long. It is subjected to an axial load which is varies from 15 N (compression) to 450 N (tension) and also a transverse load at its free end which is varies from 80N up to 120N down. The cantilever is of circular cross section. It is of diameter 2d for the first 50mm and of diameter d for remaining length. Determine the diameter taking a factor of safety of 2. Assume the following values. Yield stress is 330MPa, Endurance limit in reversed loading is 300MPa, Size effect factor is 0.85, Surface effect factor is 0.9, Notch sensitivity factor is 0.9,
Correction factor = 0.7 in reversed axial loading
= 1.0 in reversed bending
Stress concentration factor = 1.44 for bending
= 1.64 for axial loading