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Subsubsection 4.6.2.5: Step Up Section 4.6: Reactive Damage Mechanics Subsubsection 4.6.3.1: Simo

### 4.6.3 Damage Criterion

The damage criterion provides the functional form of that determines the evolution of damage. There are no material parameters associated with these functions. All the functions currently modeled in FEBio are defined over the range .
Subsubsection 4.6.2.5: Step Up Section 4.6: Reactive Damage Mechanics Subsubsection 4.6.3.1: Simo