GATE Mechanical 2014 Set 2 | Question: 38

Consider the two states of stress as shown in configurations I and II in the figure below. From the standpoint of distortion energy (von-Mises) criterion, which one of the following statements is true?

1. $I$ yields after $II$
2. $II$ yields after $I$
3. Both yield simultaneously
4. Nothing can be said about their relative yielding

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