********************
**Von Mises Stress**
********************

::

   Von Mises Stress = {yes | no}

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**Description / Usage**
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This option allows you to plot the Von Mises stress tensor invarients, for use with the
FAUX_PLASTICITY model of the modulus. These quantities are written to the
*Output EXODUS II* file.

The permissible values for this postprocessing option are:

======== ===============================================
**yes**  Calculate the von Mises stress invariants and 
         output as a nodal variable in the Output 
         EXODUS II file.
**no**   Do not calculate the invariants (default).
======== ===============================================

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**Examples**
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The following sample card requests **LAMBDA** be written to the EXODUS II file:
::

   Von Mises Stress = yes

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**Technical Discussion**
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No Discussion.