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The final result for von-Mises theory for the distortion relating the yield stress with stress deviator is: σo = 1/√2 1/2 Where σo yield stress in uniaxial tension.

The final result for von-Mises theory for the distortion relating the yield stress with stress deviator is: σo = 1/√2 1/2 Where σo yield stress in uniaxial tension. Correct Answer 1/2 Where σo yield stress in uniaxial tension. ] True

According to the theory, yielding will occurs when the second invariant of the stress deviator J2 exceeds some critical value J2=k2 J2=1/6 k=σo/√3 So: 1/3 = 1/6 σo = 1/√2 1/2 So, when R.H.S. value excessed σo yielding will occur in the material.

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