김경종
106 lines
12 KiB
Markdown
106 lines
12 KiB
Markdown
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# General behaviors:
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These behaviors are unrestricted.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Material damping</td><td>*DAMPING</td><td>Elasticity, fabric, hyperelasticity, hyperfoam, low-density foam, or anisotropic hyperelasticity (except when used with beam or shell general sections or substructures)</td></tr><tr><td>Density</td><td>*DENSITY</td><td>Required in Abaqus/Explicit, except for hydrostatic fluid elements</td></tr><tr><td>Solution-dependent state variables</td><td>*DEPVAR</td><td></td></tr><tr><td>Thermal expansion</td><td>*EXPANSION</td><td></td></tr></table>
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# Complete mechanical behaviors:
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These behaviors are mutually exclusive and exclude all behaviors listed for elasticity, plasticity, and hydrostatic fluid behaviors, including all related enhancements. However, when an element is enriched (“Modeling discontinuities as an enriched feature using the extended finite element method,” Section 10.7.1), the mechanical user material behavior can be used in conjunction with the progressive damage and failure behavior, which is in the enhancement for elasticity or plasticity behaviors category.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Acoustic medium</td><td>*ACOUSTIC MEDIUM</td><td rowspan="3">Density</td></tr><tr><td>Deformation plasticity(S)</td><td>*DEFORMATION PLASTICITY</td></tr><tr><td>Mechanical user material</td><td>*USER MATERIAL (, TYPE=MECHANICAL in Abaqus/Standard)</td></tr></table>
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# Elasticity, fabric, and equation of state behaviors:
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These behaviors are mutually exclusive.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Elasticity</td><td>*ELASTIC</td><td></td></tr><tr><td>Equation of state(E)</td><td>*EOS</td><td></td></tr><tr><td>Fabric(E)</td><td>*FABRIC</td><td></td></tr><tr><td>Hyperelasticity</td><td>*HYPERELASTIC</td><td></td></tr><tr><td>Hyperfoam</td><td>*HYPERFOAM</td><td></td></tr></table>
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Anisotropic hyperelasticity</td><td>*ANISOTROPIC HYPERELASTIC</td><td></td></tr><tr><td>Hypoelasticity(S)</td><td>*HYPOELASTIC</td><td></td></tr><tr><td>Porous elasticity (S)</td><td>*POROUS ELASTIC</td><td></td></tr><tr><td>Low-density foam (E)</td><td>*LOW DENSITY FOAM</td><td></td></tr></table>
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Enhancements for elasticity behaviors:
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Elastic shear behavior for an equation of state(E)</td><td>*ELASTIC, TYPE=SHEAR</td><td>Equation of state</td></tr><tr><td>Strain-based failure measures</td><td>*FAIL STRAIN</td><td>Elasticity</td></tr><tr><td>Stress-based failure measures</td><td>*FAIL STRESS</td><td>Elasticity</td></tr><tr><td>Hysteresis(S)</td><td>*HYSTERESIS</td><td>Hyperelasticity (excludes all plasticity behaviors and Mullins effect)</td></tr><tr><td>Mullins effect</td><td>*MULLINS EFFECT</td><td>Hyperelasticity (excludes hysteresis), hyperfoam or anisotropic hyperelasticity</td></tr><tr><td>Compressive failure theory(S)</td><td>*NO COMPRESSION</td><td>Elasticity</td></tr><tr><td>Tension failure theory(S)</td><td>*NO TENSION</td><td>Elasticity</td></tr><tr><td>Viscoelasticity</td><td>*VISCOELASTIC</td><td>Elasticity, hyperelasticity, or hyperfoam (excludes all plasticity behaviors and all associated plasticity enhancements); or anisotropic hyperelasticity</td></tr><tr><td>Shear viscosity for an equation of state(E)</td><td>*VISCOSITY</td><td>Equation of state</td></tr></table>
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# Rate-independent plasticity behaviors:
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These behaviors are mutually exclusive.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Brittle cracking(E)</td><td>*BRITTLE CRACKING</td><td>Isotropic elasticity and brittle shear</td></tr></table>
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Modified Drucker-Prager/Cap plasticity</td><td>*CAP PLASTICITY</td><td>Drucker-Prager/Cap plasticity hardening and isotropic elasticity or porous elasticity</td></tr><tr><td>Cast iron plasticity</td><td>*CAST IRON PLASTICITY</td><td>Cast iron compression hardening, cast iron tension hardening, and isotropic elasticity</td></tr><tr><td>Cam-clay plasticity</td><td>*CLAY PLASTICITY</td><td>Isotropic elasticity, orthotropic elasticity, or porous elasticity (in Abaqus/Standard)Isotropic elasticity or orthotropic elasticity (in Abaqus/Explicit)</td></tr><tr><td>Concrete(S)</td><td>*CONCRETE</td><td>Isotropic elasticity</td></tr><tr><td>Concrete damaged plasticity</td><td>*CONCRETE DAMAGED PLASTICITY</td><td>Concrete compression hardening, concrete tension stiffening, and isotropic elasticity</td></tr><tr><td>Crushable foam plasticity</td><td>*CRUSHABLE FOAM</td><td>Crushable foam hardening and isotropic elasticity</td></tr><tr><td>Drucker-Prager plasticity</td><td>*DRUCKER PRAGER</td><td>Drucker-Prager hardening and isotropic elasticity or porous elasticity (in Abaqus/Standard)Drucker-Prager hardening and isotropic elasticity or the combination of an equation of state and isotropic linear elastic shear behavior for an equation of state (in Abaqus/Explicit)</td></tr><tr><td>Plastic compaction behavior for an equation of state(E)</td><td>*EOS COMPACTION</td><td>Linear $U_s - U_p$ equation of state</td></tr><tr><td>Jointed material(S)</td><td>*JOINTED MATERIAL</td><td>Isotropic elasticity and a local orientation</td></tr><tr><td>Mohr-Coulomb plasticity</td><td>*MOHR COULOMB</td><td>Mohr-Coulomb hardening and isotropic elasticity</td></tr><tr><td>Metal plasticity</td><td>*PLASTIC</td><td>Elasticity or hyperelasticity (in Abaqus/Standard)Isotropic elasticity, orthotropic elasticity (requires anisotropic yield), hyperelasticity, or the combination of an equation of state and isotropic linear elastic shear behavior for an equation of state (in Abaqus/Explicit)</td></tr></table>
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# Rate-dependent plasticity behaviors:
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These behaviors are mutually exclusive, except metal creep and time-dependent volumetric swelling.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td> $Cap creep^{(S)}$ </td><td>*CAP CREEP</td><td>Elasticity, modified Drucker-Prager/Cap plasticity, and Drucker-Prager/Cap plasticity hardening</td></tr><tr><td> $Metal creep^{(S)}$ </td><td>*CREEP</td><td>Elasticity (except when used to define rate-dependent gasket behavior; excludes all rate-independent plasticity behaviors except metal plasticity)</td></tr><tr><td> $Drucker-Prager creep^{(S)}$ </td><td>*DRUCKER PRAGER CREEP</td><td>Elasticity, Drucker-Prager plasticity, and Drucker-Prager hardening</td></tr><tr><td>Metal plasticity</td><td>*PLASTIC, RATE</td><td>Elasticity or hyperelasticity (in Abaqus/Standard)Isotropic elasticity, orthotropic elasticity (requires anisotropic yield), hyperelasticity, or the combination of an equation of state and isotropic linear elastic shear behavior for an equation of state (in Abaqus/Explicit)</td></tr><tr><td>Nonlinear viscoelasticity</td><td>*VISCOELASTIC, NONLINEAR</td><td>Hyperelasticity</td></tr><tr><td>Rate-dependent viscoplasticity</td><td>*RATE DEPENDENT</td><td>Drucker-Prager plasticity, crushable foam plasticity, or metal plasticity</td></tr><tr><td>Time-dependent volumetric swelling $^{(S)}$ </td><td>*SWELLING</td><td>Elasticity (excludes all rate-independent plasticity behaviors except metal plasticity)</td></tr><tr><td>Two-layer viscoplasticity $^{(S)}$ </td><td>*VISCOUS</td><td>Elasticity and metal plasticity</td></tr></table>
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Enhancements for plasticity behaviors:
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Annealing temperature</td><td>*ANNEAL TEMPERATURE</td><td>Metal plasticity</td></tr><tr><td>Brittle failure(E)</td><td>*BRITTLE FAILURE</td><td>Brittle cracking and brittle shear</td></tr></table>
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Cyclic hardening</td><td>*CYCLIC HARDENING</td><td>Metal plasticity with nonlinear isotropic/kinematic hardening</td></tr><tr><td>Inelastic heat fraction</td><td>*INELASTIC HEAT FRACTION</td><td>Metal plasticity and specific heat</td></tr><tr><td>Oak Ridge National Laboratory constitutive model(S)</td><td>*ORNL</td><td>Metal plasticity, cycled yield stress data, and, usually, metal creep</td></tr><tr><td>Porous material failure criteria(E)</td><td>*POROUS FAILURE CRITERIA</td><td>Porous metal plasticity</td></tr><tr><td>Porous metal plasticity</td><td>*POROUS METAL PLASTICITY</td><td>Metal plasticity</td></tr><tr><td>Anisotropic yield/creep</td><td>*POTENTIAL</td><td>Metal plasticity, metal creep, Cam-clay plasticity, or two-layer viscoplasticity</td></tr><tr><td>Shear failure(E)</td><td>*SHEAR FAILURE</td><td>Metal plasticity</td></tr><tr><td>Tension cutoff</td><td>*TENSION CUTOFF</td><td>Mohr-Coulomb plasticity</td></tr></table>
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Enhancement for elasticity or plasticity behaviors:
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Tensile failure(E)</td><td>*TENSILE FAILURE</td><td>Metal plasticity or equation of state</td></tr><tr><td>Damage initiation</td><td>*DAMAGE INITIATION</td><td>For elasticity behaviors: elasticity based on a traction-separation description for cohesive elements or elasticity model for fiber-reinforced composites For plasticity behaviors: elasticity and metal plasticity or Drucker-Prager plasticity</td></tr><tr><td>Damage evolution</td><td>*DAMAGE EVOLUTION</td><td>Damage initiation</td></tr><tr><td>Damage stabilization</td><td>*DAMAGE STABILIZATION</td><td>Damage evolution</td></tr></table>
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# Thermal behaviors:
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These behaviors are unrestricted but exclude thermal user materials.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Thermal conductivity</td><td>*CONDUCTIVITY</td><td></td></tr><tr><td>Volumetric heat generation(S)</td><td>*HEAT GENERATION</td><td></td></tr><tr><td>Latent heat</td><td>*LATENT HEAT</td><td>Density</td></tr><tr><td>Specific heat</td><td>*SPECIFIC HEAT</td><td>Density</td></tr></table>
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# Complete thermal behavior:
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This behavior is unrestricted but excludes the thermal behaviors in the previous table.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Thermal user material(S)</td><td>*USER MATERIAL, TYPE=THERMAL</td><td>Density</td></tr></table>
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# Pore fluid flow behaviors:
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These behaviors are unrestricted.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Swelling gel(S)</td><td>*GEL</td><td>Permeability, porous bulk moduli, and absorption/exsorption behavior</td></tr><tr><td>Moisture-driven swelling(S)</td><td>*MOISTURE SWELLING</td><td>Permeability and absorption/exsorption behavior</td></tr><tr><td>Permeability(S)</td><td>*PERMEABILITY</td><td></td></tr><tr><td>Porous bulk moduli(S)</td><td>*POROUS BULK MODULI</td><td>Permeability and either elasticity or porous elasticity</td></tr><tr><td>Absorption/exsorption behavior(S)</td><td>*SORPTION</td><td>Permeability</td></tr></table>
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# Electrical behaviors:
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These behaviors are unrestricted.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Dielectricity(S)</td><td>*DIELECTRIC</td><td></td></tr><tr><td>Electrical conductivity(S)</td><td>*ELECTRICAL CONDUCTIVITY</td><td></td></tr><tr><td>Fraction of electric energy released as heat(S)</td><td>*JOULE HEAT FRACTION</td><td></td></tr><tr><td>Piezoelectricity(S)</td><td>*PIEZOELECTRIC</td><td></td></tr></table>
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# Mass diffusion behaviors:
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These behaviors exclude all other behaviors.
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Mass diffusivity(S)</td><td>*DIFFUSIVITY</td><td>Solubility</td></tr><tr><td>Solubility(S)</td><td>*SOLUBILITY</td><td>Mass diffusivity</td></tr></table>
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# Hydrostatic fluid behaviors:
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<table><tr><td>Behavior</td><td>Keyword</td><td>Requires</td></tr><tr><td>Fluid bulk modulus $^{(S)}$ </td><td>*FLUID BULK MODULUS</td><td>Hydraulic fluid</td></tr><tr><td>Hydrostatic fluid density</td><td>*FLUID DENSITY</td><td></td></tr><tr><td>Fluid thermal expansion coefficient $^{(S)}$ </td><td>*FLUID EXPANSION</td><td>Hydraulic fluid</td></tr></table>
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# 21.2 General properties
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• “Density,” Section 21.2.1
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