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The von Mises stress at a point is proportional to the square root of the

1. total strain energy per unit volume
2. plastic strain energy per unit volume
3. dilatational strain energy per unit volume
4. distortional strain energy per unit volume

Correct answer: distortional strain energy per unit volume

Solution

The von Mises stress is derived from the distortional strain energy, which reflects the material's response to shear deformation. It is specifically designed to predict yielding under complex loading conditions, making it directly related to the distortional component of strain energy.

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