<?xml version="1.0" encoding="utf-8"?>
<EngineeringData version="12.1">
  <Notes>
    This file is used to identify and group the definition methods for material properties.  The user
    will be presented with this as a searchable tree view.
  </Notes>
  <!-- NOTES
        The following target attribute can NOT be changed.
  -->
  <MaterialPropertyDefinitionCategories target="AUTODYN|LSDYNA|LSDYNA@LSDYNA">
    <PhysicsCategory physicsFilter="Structural AND Implicit" name="Structural">
      <PropertyCategory name="Pressure vs. Volume and Energy Relationships">
        <PropertySubcategory name="Linear Elastic">
          <Property name="Viscoelastic"/>          
        </PropertySubcategory>
        <PropertySubcategory name="Plasticity">
          <Property name="Johnson Cook Strength"/>
          <Property name="Cowper Symonds Strength"/>
          <Property name="Steinberg Guinan Strength"/>
          <Property name="Zerilli Armstrong Strength"/>
          <PropertySubcategory name="Brittle/Granular">
            <Property name="Drucker-Prager Strength">
              <DefinitionMethod name="Linear" affix="postfix"/>
              <DefinitionMethod name="Stassi" affix="postfix"/>
              <DefinitionMethod name="Piecewise" affix="postfix"/>
            </Property>
            <Property name="Johnson-Holmquist Strength">
              <DefinitionMethod name="Continuous" affix="postfix"/>
              <DefinitionMethod name="Segmented" affix="postfix"/>
            </Property>
            <Property name="RHT Concrete Strength"/>
            <Property name="MO Granular">
            </Property>
          </PropertySubcategory>
        </PropertySubcategory>

        <PropertySubcategory productFilter="kExplicit" disciplineFilter="kStructural" name="Equation of State">
          <PropertySubcategory name="Equations of State">
            <Property name="Ideal Gas EOS"/>
            <Property name="Bulk Modulus"/>
            <Property name="Shear Modulus"/>
            <Property name="Polynomial EOS"/>
            <Property name="Shock EOS">
              <DefinitionMethod name="Linear" affix="postfix"/>
              <DefinitionMethod name="Bilinear" affix="postfix"/>
            </Property>
            <Property name="Explosive JWL"/>
            <Property name="Explosive JWL">
              <DefinitionMethod name="Miller" affix="postfix"/>
            </Property>
          </PropertySubcategory>

          <PropertySubcategory name="Porosity">
            <Property name="Crushable Foam"/>
            <Property name="Compaction EOS">
              <DefinitionMethod name="Linear" affix="postfix"/>
              <DefinitionMethod name="Non-Linear" affix="postfix"/>
            </Property>
            <Property name="P-alpha EOS"/>
          </PropertySubcategory>
        </PropertySubcategory>

        <PropertySubcategory productFilter="kExplicit" disciplineFilter="kStructural" name="Failure">
          <Property name="Plastic Strain Failure"/>
          <Property name="Principal Stress Failure"/>
          <Property name="Principal Strain Failure"/>
          <Property name="Stochastic Failure"/>
          <Property name="Tensile Pressure Failure"/>
          <Property name="Crack Softening Failure"/>
          <Property name="Johnson Cook Failure"/>
          <Property name="Grady Spall Failure"/>
        </PropertySubcategory>

      </PropertyCategory>
    </PhysicsCategory>
  </MaterialPropertyDefinitionCategories>
</EngineeringData>