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A steel bar having diameter 14 m is subjected to a fluctuating load of 50 kN in tension and 10 kN in compression. Find the mean stress of the steel bar?

A steel bar having diameter 14 m is subjected to a fluctuating load of 50 kN in tension and 10 kN in compression. Find the mean stress of the steel bar? Correct Answer 130 Pa

The cross sectional area of the rod: -> π(D/4)2 -> (22/7)*7*7 = 154 m2 Maximum stress = 50000/154 = + 324.67 Minimum stress = 10000/154 = – 64.93 Mean stress = (324.67-64.93)/2 = 129.86 Pa.

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