Question

A circular bar of 50omm length i, ,op[o#a freely at its two ends. It is acted upon by a central concentrated cyclic load having a minimum value of 20 h.L and a maximumvalue of 50ld'i. Determine the diameter of bar by taking a factor of safety of 1.5, size effect of 0.85, surface finish factor of0.9, stress concentration factor of 1. The material properties ofbar are given by ultimate strength of 650 mpa, yield strength of 500 mpa and *a**"" stength f 350 mpa

Answer 1

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