Arif-

von Mises stress is a stress-invariant which is used in yield criteria
for materials.  A brief explanation can be found in Roark's Formula for
Stress & Strain.  As a stress-invariant it is calculated independent of
the coordinate reference frame and it does not carry directional stress
information, such as normal and shear stresses, but carries enough to
identify hot-spots where failure might occur.

Raj

Arif.Hossain@asu.edu wrote:

> Hi everybody,
>
> Can anybody tell me what is von mises stress is. When doing ansys simulation,
> people see von mises stress to observe the stress in the material. But does
> exactly mean by von mises stress.
>
> Thanks,
>
> Arif

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Raj Gupta, Partner
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