artisynth.core.materials

Class IncompressibleMaterial

java.lang.Object

artisynth.core.materials.MaterialBase

artisynth.core.materials.FemMaterial

artisynth.core.materials.IncompressibleMaterialBase

artisynth.core.materials.IncompressibleMaterial

All Implemented Interfaces:

HasMaterialState, PostScannable, PropertyChangeListener, ScalableUnits, java.lang.Cloneable, CompositeProperty, HasProperties, Clonable, Scannable

public class IncompressibleMaterial
extends IncompressibleMaterialBase

Nested Class Summary

Nested classes/interfaces inherited from class artisynth.core.materials.IncompressibleMaterialBase

IncompressibleMaterialBase.BulkPotential

Field Summary

Fields inherited from class artisynth.core.materials.IncompressibleMaterialBase

DEFAULT_BULK_MODULUS, DEFAULT_BULK_POTENTIAL, myProps

Constructor Summary

Constructors

Constructor and Description
IncompressibleMaterial() Creates a new IncompressibleMaterial with default parameter values.
IncompressibleMaterial(double kappa) Creates a new IncompressibleMaterial with the specified bulk modulus.

Method Summary

Modifier and Type	Method and Description
double	computeDevStrainEnergy(DeformedPoint def, Matrix3d Q, double excitation, MaterialStateObject state)
void	computeDevStressAndTangent(SymmetricMatrix3d sigma, Matrix6d D, DeformedPoint def, Matrix3d Q, double excitation, MaterialStateObject state)
boolean	isInvertible() Returns true if this material is defined for a deformation gradient with a non-positive determinant.
boolean	isThreadSafe() Queries whether this material's stress, tangent and energy methods can be called concurrently from multiple threads (for different deformed points).

Methods inherited from class artisynth.core.materials.IncompressibleMaterialBase

addPressureStress, addPressureTangent, computePressureStress, computePressureTangent, computeStrainEnergyDensity, computeStressAndTangent, computeU, equals, getAllPropertyInfo, getBulkModulus, getBulkModulus, getBulkModulusField, getBulkModulusMode, getBulkPotential, getBulkPotentialMode, getEffectiveModulus, getEffectivePressure, getIncompressibleComponent, isIncompressible, scaleDistance, scaleMass, setBulkModulus, setBulkModulusField, setBulkModulusMode, setBulkPotential, setBulkPotentialMode

Methods inherited from class artisynth.core.materials.FemMaterial

cauchyToSecondPKStress, clone, collectFieldBindings, computeDevLeftCauchyGreen, computeDevRightCauchyGreen, computeLeftCauchyGreen, computeRightCauchyGreen, createStateObject, getSubClasses, hasState, isCorotated, isLinear, propertyChanged, registerSubclass, secondPKToCauchyStress, writeItems

Methods inherited from class artisynth.core.materials.MaterialBase

advanceState, createChangeEvent, getProperty, getPropertyHost, getPropertyInfo, hasProperty, hasSymmetricTangent, isWritable, postscan, scan, setPropertyHost, setPropertyInfo, symmetryOrStateChanged, updateMaterial, write

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

IncompressibleMaterial

public IncompressibleMaterial()

Creates a new IncompressibleMaterial with default parameter values.

IncompressibleMaterial

public IncompressibleMaterial(double kappa)

Creates a new IncompressibleMaterial with the specified bulk modulus.

Parameters:

kappa - bulk modulus

Method Detail

computeDevStressAndTangent

public void computeDevStressAndTangent(SymmetricMatrix3d sigma,
                                       Matrix6d D,
                                       DeformedPoint def,
                                       Matrix3d Q,
                                       double excitation,
                                       MaterialStateObject state)

Specified by:

computeDevStressAndTangent in class IncompressibleMaterialBase

computeDevStrainEnergy

public double computeDevStrainEnergy(DeformedPoint def,
                                     Matrix3d Q,
                                     double excitation,
                                     MaterialStateObject state)

Specified by:

computeDevStrainEnergy in class IncompressibleMaterialBase

isInvertible

public boolean isInvertible()

Description copied from class: FemMaterial

Returns true if this material is defined for a deformation gradient with a non-positive determinant.

Overrides:

isInvertible in class FemMaterial

isThreadSafe

public boolean isThreadSafe()

Description copied from class: FemMaterial

Queries whether this material's stress, tangent and energy methods can be called concurrently from multiple threads (for different deformed points). This requires that the methods do not modify any shared internal state. The default implementation returns false; subclasses which are thread safe should override this. If the material has properties bound to fields (see FemMaterial.collectFieldBindings(java.util.List<artisynth.core.modelbase.FieldComponent>)), then concurrent use additionally requires that FieldComponent.updateForConcurrentAccess() has been called for each of those fields.

Overrides:

isThreadSafe in class FemMaterial

Returns:

true if this material is thread safe