Distortion Energy (von Mises) Failure Criterion
The
Tensile Yield Stress is the required
Material Limits for the
Distortion Energy (von Mises) failure criterion. When you select
Distortion Energy (von Mises) as the
Failure Criteria, you must specify the value of the
Tensile Yield Stress.
Enter a positive value for yield stress.
If you do not specify a value, failure indexes are not computed for this material.
The von Mises failure index is calculated as follows:
failure_index = von Mises Stress/Tensile Yield Stress
Each field that has a dimension can have its own units. The values are scaled when the units change. Generally the distortion energy (von Mises) failure criterion is used in the definition of ductile materials.