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A steel has its yield strength of 200N/mm2 and modulus of elasticity of 1x105MPa. Assuming the material to obey hookes law up to yielding, what will be its proof resilience?

A steel has its yield strength of 200N/mm2 and modulus of elasticity of 1x105MPa. Assuming the material to obey hookes law up to yielding, what will be its proof resilience? Correct Answer 0.2 N/mm2

Proof resilience = σ2/2E = (200)2 / (2 x 105) = 0.2 N/mm2.

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