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Mechanical Design and Analysis · Question 1

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A. Machine-element stress, failure theories, springs & deflection

At the critical point of a loaded machine element the plane-stress components are $\sigma_x=80\,\text{MPa}$ , $\sigma_y=30\,\text{MPa}$ , and $\tau_{xy}=25\,\text{MPa}$ (see the stress element). The distortion-energy (von Mises) effective stress is most nearly:

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