Von Mises Stress: Yielding & SF Criterion Equation

Thread starter xJJx
Start date Jan 13, 2019
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Stress Von mises

AI Thread Summary

The von Mises criterion equation without the safety factor (SF) is applicable only after yielding has occurred, meaning SF=1. In contrast, the equation that includes the safety factor is relevant for all scenarios, regardless of whether the material has yielded. This distinction is crucial for understanding material behavior under stress. The discussion emphasizes the importance of applying the correct equation based on the material's yield status. Clarifying these conditions helps ensure accurate assessments in engineering applications.

Jan 13, 2019

xJJx

Hi, just wanted to ask for the von Mises criterion equation, is the equation without the SF (the one I circled in blue) only applicable when yielding has FIRST occurred? (i.e when SF=1)? and is the equation including the SF (one I circled in orange) applicable to all cases? (i.e whether the material has yielded or not)
thank you

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Jan 13, 2019

xJJx

sorry the images didn't upload on my original post:

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