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Feb 22nd, 2019
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__Sign Up__- The von Mises yield criterion is
- \begin{equation} \label{b1}
- f = (3J_2)^{1/2}-\sigma_y = 0
- \end{equation}
- Assume that the stress states above are calculated with a linear elastic
- analysis. Which of the stress states A to D above will give a plastic
- deformation? The effective stress $\sigma_{eff}$ is defined by:
- \begin{equation} \label{b1}
- \sigma_{eff} = (\frac{3}{2}S_{ij}S_{ij})^{1/2}
- \end{equation}
- The material yields at $\sigma_{eff} = 2000$ MPa.

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