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Monday, 05 August 2019 07:53cat

How to calculate yield strength

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The stress-strain diagram for a steel rod is shown and can be described by the equation ε=0.20(1e-06)σ+0.20(1e-12)σ3 where s in kPa. Determine the yield strength assuming a 0.5% offset.


(a) For 0.5% =0.005mm/mm

5000=0.20σ+0.20(1e-6)σ3 solving for σ=2810.078kPa.

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