##  [Von Mises Yield Criterion](/von-mises-yield-criterion) 

  ##  [Von Mises Yield Criterion](https://engineering.quantumdictionary.io/von-mises-yield-criterion-0) 

  

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**Engineering & Applied Technologies Dictionary**

 







 

 

 

 



 

 

 

 

Definition

A yield condition for ductile, isotropic metals stating that plastic yielding begins when the von Mises equivalent stress (σ_vm), computed from the deviatoric part of the stress tensor and proportional to the square root of the second invariant J2, reaches a material-specific yield stress in simple tension. Hydrostatic (mean) stress does not affect σ_vm.