Base class representing general isotropic damage model. More...

#include <isodamagemodel.h>

Inheritance diagram for oofem::IsotropicDamageMaterial:

Collaboration diagram for oofem::IsotropicDamageMaterial:

Public Member Functions
	IsotropicDamageMaterial (int n, Domain *d)
	Constructor. More...

virtual	~IsotropicDamageMaterial ()
	Destructor. More...

virtual int	hasNonLinearBehaviour ()
	Returns nonzero if receiver is non linear. More...

virtual int	hasMaterialModeCapability (MaterialMode mode)
	Tests if material supports material mode. More...

virtual const char *	giveClassName () const

LinearElasticMaterial *	giveLinearElasticMaterial ()
	Returns reference to undamaged (bulk) material. More...

virtual void	give3dMaterialStiffnessMatrix (FloatMatrix &answer, MatResponseMode mode, GaussPoint gp, TimeStep tStep)
	Computes full 3d material stiffness matrix at given integration point, time, respecting load history in integration point. More...

virtual void	giveRealStressVector (FloatArray &answer, GaussPoint gp, const FloatArray &reducedStrain, TimeStep tStep)
	Computes the real stress vector for given total strain and integration point. More...

virtual void	giveRealStressVector_3d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation relies on giveRealStressVector for second Piola-Kirchoff stress. More...

virtual void	giveRealStressVector_PlaneStrain (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation relies on giveRealStressVector_3d. More...

virtual void	giveRealStressVector_StressControl (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, const IntArray &strainControl, TimeStep tStep)
	Iteratively calls giveRealStressVector_3d to find the stress controlled equal to zero· More...

virtual void	giveRealStressVector_PlaneStress (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation relies on giveRealStressVector_StressControl. More...

virtual void	giveRealStressVector_1d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation relies on giveRealStressVector_StressControl. More...

virtual int	giveIPValue (FloatArray &answer, GaussPoint gp, InternalStateType type, TimeStep tStep)
	Returns the integration point corresponding value in Reduced form. More...

virtual void	giveThermalDilatationVector (FloatArray &answer, GaussPoint , TimeStep )
	Returns a vector of coefficients of thermal dilatation in direction of each material principal (local) axis. More...

virtual double	evaluatePermanentStrain (double kappa, double omega)

virtual double	give (int aProperty, GaussPoint *gp)
	Returns the value of material property 'aProperty'. More...

virtual void	computeEquivalentStrain (double &kappa, const FloatArray &strain, GaussPoint gp, TimeStep tStep)=0
	Computes the equivalent strain measure from given strain vector (full form). More...

virtual void	computeEta (FloatArray &answer, const FloatArray &strain, GaussPoint gp, TimeStep tStep)
	Computes derivative of the equivalent strain with regards to strain. More...

virtual void	computeDamageParam (double &omega, double kappa, const FloatArray &strain, GaussPoint *gp)=0
	Computes the value of damage parameter omega, based on given value of equivalent strain. More...

virtual IRResultType	initializeFrom (InputRecord *ir)
	Initializes receiver according to object description stored in input record. More...

virtual void	giveInputRecord (DynamicInputRecord &input)
	Setups the input record string of receiver. More...

MaterialStatus *	CreateStatus (GaussPoint *gp) const
	Creates new copy of associated status and inserts it into given integration point. More...

Public Member Functions inherited from oofem::StructuralMaterial
	StructuralMaterial (int n, Domain *d)
	Constructor. More...

virtual	~StructuralMaterial ()
	Destructor. More...

virtual void	giveStiffnessMatrix (FloatMatrix &answer, MatResponseMode mode, GaussPoint gp, TimeStep tStep)
	Computes the stiffness matrix for giveRealStressVector of receiver in given integration point, respecting its history. More...

virtual void	giveRealStressVector_ShellStressControl (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, const IntArray &strainControl, TimeStep tStep)

virtual void	giveRealStressVector_Warping (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation relies on giveRealStressVector_StressControl. More...

virtual void	giveRealStressVector_2dBeamLayer (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation relies on giveRealStressVector_StressControl. More...

virtual void	giveRealStressVector_PlateLayer (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation relies on giveRealStressVector_StressControl. More...

virtual void	giveRealStressVector_Fiber (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation relies on giveRealStressVector_StressControl. More...

virtual void	giveRealStressVector_Lattice2d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)

virtual void	giveRealStressVector_Lattice3d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)

virtual void	giveRealStressVector_2dPlateSubSoil (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)
	Default implementation is not provided. More...

virtual void	giveRealStressVector_3dBeamSubSoil (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, TimeStep tStep)

virtual void	giveEshelbyStressVector_PlaneStrain (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)
	Prototype for computation of Eshelby stress. More...

void	give_dPdF_from (const FloatMatrix &dSdE, FloatMatrix &answer, GaussPoint *gp)

void	convert_dSdE_2_dPdF (FloatMatrix &answer, const FloatMatrix &dSdE, const FloatArray &S, const FloatArray &F, MaterialMode matMode)

double	giveReferenceTemperature ()
	Returns the reference temperature of receiver. More...

virtual void	computeStressIndependentStrainVector (FloatArray &answer, GaussPoint gp, TimeStep tStep, ValueModeType mode)
	Computes reduced strain vector in given integration point, generated by internal processes in material, which are independent on loading in particular integration point. More...

virtual void	computeStressIndependentStrainVector_3d (FloatArray &answer, GaussPoint gp, TimeStep tStep, ValueModeType mode)

virtual void	give3dMaterialStiffnessMatrix_dPdF (FloatMatrix &answer, MatResponseMode mode, GaussPoint gp, TimeStep tStep)

virtual void	give3dMaterialStiffnessMatrix_dCde (FloatMatrix &answer, MatResponseMode mode, GaussPoint gp, TimeStep tStep)

void	giveStressDependentPartOfStrainVector (FloatArray &answer, GaussPoint gp, const FloatArray &reducedStrainVector, TimeStep tStep, ValueModeType mode)
	Method for subtracting from reduced space strain vector its stress-independent parts (caused by temperature, shrinkage, creep and possibly by other phenomena). More...

void	giveStressDependentPartOfStrainVector_3d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedStrainVector, TimeStep tStep, ValueModeType mode)

virtual int	setIPValue (const FloatArray &value, GaussPoint *gp, InternalStateType type)
	Sets the value of a certain variable at a given integration point to the given value. More...

virtual void	give2dBeamLayerStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing 2d beam layer stiffness matrix of receiver. More...

virtual void	givePlateLayerStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing 2d plate layer stiffness matrix of receiver. More...

virtual void	giveFiberStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing 1d fiber stiffness matrix of receiver. More...

virtual void	give2dLatticeStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing 2d lattice stiffness matrix of receiver. More...

virtual void	give3dLatticeStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing 3d lattice stiffness matrix of receiver. More...

virtual void	give2dPlateSubSoilStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing stiffness matrix of plate subsoil model. More...

virtual void	give3dBeamSubSoilStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing stiffness matrix of beam3d subsoil model. More...

virtual void	giveFirstPKStressVector_3d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)
	Default implementation relies on giveRealStressVector for second Piola-Kirchoff stress. More...

virtual void	giveFirstPKStressVector_PlaneStrain (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)
	Default implementation relies on giveFirstPKStressVector_3d. More...

virtual void	giveFirstPKStressVector_PlaneStress (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)
	Default implementation relies on giveFirstPKStressVector_3d. More...

virtual void	giveFirstPKStressVector_1d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)
	Default implementation relies on giveFirstPKStressVector_3d. More...

virtual void	giveCauchyStressVector_3d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)

virtual void	giveCauchyStressVector_PlaneStrain (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)

virtual void	giveCauchyStressVector_PlaneStress (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)

virtual void	giveCauchyStressVector_1d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedF, TimeStep tStep)

virtual void	givePlaneStressStiffMtrx_dPdF (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)

virtual void	givePlaneStressStiffMtrx_dCde (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)

virtual void	givePlaneStrainStiffMtrx_dPdF (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)

virtual void	givePlaneStrainStiffMtrx_dCde (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)

virtual void	give1dStressStiffMtrx_dPdF (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)

virtual void	give1dStressStiffMtrx_dCde (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)

Public Member Functions inherited from oofem::Material
	Material (int n, Domain *d)
	Constructor. More...

virtual	~Material ()
	Destructor. More...

virtual bool	isCharacteristicMtrxSymmetric (MatResponseMode rMode)
	Returns true if stiffness matrix of receiver is symmetric Default implementation returns true. More...

virtual bool	hasProperty (int aProperty, GaussPoint *gp)
	Returns true if 'aProperty' exists on material. More...

virtual void	modifyProperty (int aProperty, double value, GaussPoint *gp)
	Modify 'aProperty', which already exists on material. More...

double	giveCastingTime ()

virtual bool	isActivated (TimeStep *tStep)

virtual int	hasCastingTimeSupport ()
	Tests if material supports casting time. More...

virtual void	printYourself ()
	Prints receiver state on stdout. Useful for debugging. More...

virtual contextIOResultType	saveIPContext (DataStream &stream, ContextMode mode, GaussPoint *gp)
	Stores integration point state to output stream. More...

virtual contextIOResultType	restoreIPContext (DataStream &stream, ContextMode mode, GaussPoint *gp)
	Reads integration point state to output stream. More...

virtual int	checkConsistency ()
	Allows programmer to test some internal data, before computation begins. More...

virtual int	initMaterial (Element *element)
	Optional function to call specific procedures when initializing a material. More...

virtual MaterialStatus *	giveStatus (GaussPoint *gp) const
	Returns material status of receiver in given integration point. More...

virtual int	packUnknowns (DataStream &buff, TimeStep tStep, GaussPoint ip)
	Pack all necessary data of integration point (according to element parallel_mode) into given communication buffer. More...

virtual int	unpackAndUpdateUnknowns (DataStream &buff, TimeStep tStep, GaussPoint ip)
	Unpack and updates all necessary data of given integration point (according to element parallel_mode) into given communication buffer. More...

virtual int	estimatePackSize (DataStream &buff, GaussPoint *ip)
	Estimates the necessary pack size to hold all packed data of receiver. More...

virtual double	predictRelativeComputationalCost (GaussPoint *gp)
	Returns the weight representing relative computational cost of receiver The reference material model is linear isotropic material - its weight is set to 1.0 The other material models should compare to this reference model. More...

virtual double	predictRelativeRedistributionCost (GaussPoint *gp)
	Returns the relative redistribution cost of the receiver. More...

virtual void	initTempStatus (GaussPoint *gp)
	Initializes temporary variables stored in integration point status at the beginning of new time step. More...

Public Member Functions inherited from oofem::FEMComponent
	FEMComponent (int n, Domain *d)
	Regular constructor, creates component with given number and belonging to given domain. More...

virtual	~FEMComponent ()
	Virtual destructor. More...

virtual const char *	giveInputRecordName () const =0

Domain *	giveDomain () const

virtual void	setDomain (Domain *d)
	Sets associated Domain. More...

int	giveNumber () const

void	setNumber (int num)
	Sets number of receiver. More...

virtual void	updateLocalNumbering (EntityRenumberingFunctor &f)
	Local renumbering support. More...

virtual contextIOResultType	saveContext (DataStream &stream, ContextMode mode, void *obj=NULL)
	Stores receiver state to output stream. More...

virtual contextIOResultType	restoreContext (DataStream &stream, ContextMode mode, void *obj=NULL)
	Restores the receiver state previously written in stream. More...

virtual void	printOutputAt (FILE file, TimeStep tStep)
	Prints output of receiver to stream, for given time step. More...

virtual Interface *	giveInterface (InterfaceType t)
	Interface requesting service. More...

std::string	errorInfo (const char *func) const
	Returns string for prepending output (used by error reporting macros). More...

Protected Types
enum	loaUnloCriterium { idm_strainLevelCR, idm_damageLevelCR }
	Variable controlling type of loading/unloading law, default set to idm_strainLevel defines the two two possibilities: More...

Protected Member Functions
virtual void	initDamaged (double kappa, FloatArray &totalStrainVector, GaussPoint *gp)
	Abstract service allowing to perform some initialization, when damage first appear. More...

virtual double	damageFunctionPrime (double kappa, GaussPoint *gp)
	Returns the value of derivative of damage function wrt damage-driving variable kappa corresponding to a given value of the kappa, depending on the type of selected damage law. More...

virtual void	givePlaneStressStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing plane stress stiffness matrix of receiver. More...

virtual void	givePlaneStrainStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing plane strain stiffness matrix of receiver. More...

virtual void	give1dStressStiffMtrx (FloatMatrix &answer, MatResponseMode mmode, GaussPoint gp, TimeStep tStep)
	Method for computing 1d stiffness matrix of receiver. More...

Protected Attributes
double	tempDillatCoeff
	Coefficient of thermal dilatation. More...

double	maxOmega
	Maximum limit on omega. The purpose is elimination of a too compliant material which may cause convergence problems. Set to something like 0.99 if needed. More...

int	permStrain
	Indicator of the type of permanent strain formulation (0 = standard damage with no permanent strain) More...

LinearElasticMaterial *	linearElasticMaterial
	Reference to bulk (undamaged) material. More...

enum oofem::IsotropicDamageMaterial::loaUnloCriterium	llcriteria

Protected Attributes inherited from oofem::StructuralMaterial
double	referenceTemperature
	Reference temperature (temperature, when material has been built into structure). More...

Protected Attributes inherited from oofem::Material
Dictionary	propertyDictionary
	Property dictionary. More...

double	castingTime
	Casting time. More...

Protected Attributes inherited from oofem::FEMComponent
int	number
	Component number. More...

Domain *	domain
	Link to domain object, useful for communicating with other FEM components. More...

Additional Inherited Members
Static Public Member Functions inherited from oofem::StructuralMaterial
static int	giveSymVI (int ind1, int ind2)

static int	giveVI (int ind1, int ind2)

static int	giveVoigtVectorMask (IntArray &answer, MaterialMode mmode)
	Returns a mask of the vector indicies corresponding to components in a general (non-symmetric) second order tensor of some stress/strain/deformation measure that performes work. More...

static int	giveVoigtSymVectorMask (IntArray &answer, MaterialMode mmode)
	The same as giveVoigtVectorMask but returns a mask corresponding to a symmetric second order tensor. More...

static void	giveInvertedVoigtVectorMask (IntArray &answer, MaterialMode mmode)
	Gives the inverted version of giveVoigtVectorMask. More...

static int	giveSizeOfVoigtVector (MaterialMode mmode)
	Returns the size of reduced stress/strain vector according to given mode. More...

static int	giveSizeOfVoigtSymVector (MaterialMode mmode)
	Returns the size of symmetric part of a reduced stress/strain vector according to given mode. More...

static void	giveFullVectorForm (FloatArray &answer, const FloatArray &strainVector, MaterialMode matMode)
	Converts the reduced symmetric Voigt vector (2nd order tensor) to full form. More...

static void	giveFullVectorFormF (FloatArray &answer, const FloatArray &strainVector, MaterialMode matMode)
	Converts the reduced deformation gradient Voigt vector (2nd order tensor). More...

static void	giveFullSymVectorForm (FloatArray &answer, const FloatArray &vec, MaterialMode matMode)
	Converts the reduced unsymmetric Voigt vector (2nd order tensor) to full form. More...

static void	giveReducedVectorForm (FloatArray &answer, const FloatArray &vec, MaterialMode matMode)
	Converts the full symmetric Voigt vector (2nd order tensor) to reduced form. More...

static void	giveReducedSymVectorForm (FloatArray &answer, const FloatArray &vec, MaterialMode matMode)
	Converts the full unsymmetric Voigt vector (2nd order tensor) to reduced form. More...

static void	giveFullSymMatrixForm (FloatMatrix &answer, const FloatMatrix &red, MaterialMode matMode)
	Converts the full unsymmetric Voigt matrix (4th order tensor) to reduced form. More...

static void	giveReducedMatrixForm (FloatMatrix &answer, const FloatMatrix &full, MaterialMode matMode)
	Converts the full symmetric Voigt matrix (4th order tensor) to reduced form. More...

static void	giveReducedSymMatrixForm (FloatMatrix &answer, const FloatMatrix &full, MaterialMode matMode)
	Converts the full unsymmetric Voigt matrix (4th order tensor) to reduced form. More...

static void	transformStrainVectorTo (FloatArray &answer, const FloatMatrix &base, const FloatArray &strainVector, bool transpose=false)
	Transforms 3d strain vector into another coordinate system. More...

static void	transformStressVectorTo (FloatArray &answer, const FloatMatrix &base, const FloatArray &stressVector, bool transpose=false)
	Transforms 3d stress vector into another coordinate system. More...

static double	computeVonMisesStress (const FloatArray *currentStress)
	Computes equivalent of von Mises stress. More...

static void	giveStrainVectorTranformationMtrx (FloatMatrix &answer, const FloatMatrix &base, bool transpose=false)
	Computes 3d strain vector transformation matrix from standard vector transformation matrix. More...

static void	give2DStrainVectorTranformationMtrx (FloatMatrix &answer, const FloatMatrix &base, bool transpose=false)
	Computes 2d strain vector transformation matrix from standard vector transformation matrix. More...

static void	giveStressVectorTranformationMtrx (FloatMatrix &answer, const FloatMatrix &base, bool transpose=false)
	Computes 3d stress vector transformation matrix from standard vector transformation matrix. More...

static void	givePlaneStressVectorTranformationMtrx (FloatMatrix &answer, const FloatMatrix &base, bool transpose=false)
	Computes 2d stress vector transformation matrix from standard vector transformation matrix. More...

static void	sortPrincDirAndValCloseTo (FloatArray pVal, FloatMatrix pDir, FloatMatrix *toPDir)
	Method for sorting newly computed principal values (pVal) and corresponding principal directions (pDir) to be closed to some (often previous) principal directions (toPDir). More...

static void	computePrincipalValues (FloatArray &answer, const FloatArray &s, stressStrainPrincMode mode)
	Common functions for convenience. More...

static void	computePrincipalValDir (FloatArray &answer, FloatMatrix &dir, const FloatArray &s, stressStrainPrincMode mode)
	Computes principal values and directions of stress or strain vector. More...

static double	computeDeviatoricVolumetricSplit (FloatArray &dev, const FloatArray &s)
	Computes split of receiver into deviatoric and volumetric part. More...

static void	computeDeviatoricVolumetricSum (FloatArray &s, const FloatArray &dev, double mean)

static void	applyDeviatoricElasticCompliance (FloatArray &strain, const FloatArray &stress, double EModulus, double nu)

static void	applyDeviatoricElasticCompliance (FloatArray &strain, const FloatArray &stress, double GModulus)

static void	applyDeviatoricElasticStiffness (FloatArray &stress, const FloatArray &strain, double EModulus, double nu)

static void	applyDeviatoricElasticStiffness (FloatArray &stress, const FloatArray &strain, double GModulus)

static void	applyElasticStiffness (FloatArray &stress, const FloatArray &strain, double EModulus, double nu)

static void	applyElasticCompliance (FloatArray &strain, const FloatArray &stress, double EModulus, double nu)

static double	computeStressNorm (const FloatArray &stress)

static double	computeFirstInvariant (const FloatArray &s)

static double	computeSecondStressInvariant (const FloatArray &s)

static double	computeThirdStressInvariant (const FloatArray &s)

static double	computeFirstCoordinate (const FloatArray &s)

static double	computeSecondCoordinate (const FloatArray &s)

static double	computeThirdCoordinate (const FloatArray &s)

Static Public Attributes inherited from oofem::StructuralMaterial
static std::vector< std::vector< int > >	vIindex
	Voigt index map. More...

static std::vector< std::vector< int > >	svIndex
	Symmetric Voigt index map. More...

Detailed Description

Base class representing general isotropic damage model.

It is based on isotropic damage concept, assuming that damage evolution law is postulated in explicit form, relation damage parameter (omega) to scalar measure of the largest strain level ever reached in material (kappa).

Definition at line 163 of file isodamagemodel.h.

Member Enumeration Documentation

enum oofem::IsotropicDamageMaterial::loaUnloCriterium

protected

Variable controlling type of loading/unloading law, default set to idm_strainLevel defines the two two possibilities:

idm_strainLevelCR the unloading takes place, when strain level is smaller than the largest level ever reached;
idm_damageLevelCR the unloading takes place, when damage level is smaller than the largest damage ever reached;

Enumerator
idm_strainLevelCR
idm_damageLevelCR

Definition at line 183 of file isodamagemodel.h.

Constructor & Destructor Documentation

oofem::IsotropicDamageMaterial::IsotropicDamageMaterial	(	int	n,
		Domain *	d
	)

Constructor.

Definition at line 44 of file isodamagemodel.C.

References idm_strainLevelCR, linearElasticMaterial, llcriteria, maxOmega, and permStrain.

oofem::IsotropicDamageMaterial::~IsotropicDamageMaterial ( )

virtual

Destructor.

Definition at line 56 of file isodamagemodel.C.

References linearElasticMaterial.

Member Function Documentation

virtual void oofem::IsotropicDamageMaterial::computeDamageParam	(	double &	omega,
		double	kappa,
		const FloatArray &	strain,
		GaussPoint *	gp
	)

pure virtual

Computes the value of damage parameter omega, based on given value of equivalent strain.

Parameters

[out]	omega	Contains result.
	kappa	Equivalent strain measure.
	strain	Total strain in full form.
	gp	Integration point.

Implemented in oofem::IsotropicDamageMaterial1, oofem::IDNLMaterial, and oofem::MazarsMaterial.

Referenced by giveRealStressVector().

virtual void oofem::IsotropicDamageMaterial::computeEquivalentStrain	(	double &	kappa,
		const FloatArray &	strain,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

pure virtual

Computes the equivalent strain measure from given strain vector (full form).

Parameters

[out]	kappa	Return parameter, containing the corresponding equivalent strain.
	strain	Total strain vector in full form.
	gp	Integration point.
	tStep	Time step.

Implemented in oofem::IsotropicDamageMaterial1, oofem::IDNLMaterial, oofem::MazarsMaterial, and oofem::MazarsNLMaterial.

Referenced by giveRealStressVector().

virtual void oofem::IsotropicDamageMaterial::computeEta	(	FloatArray &	answer,
		const FloatArray &	strain,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

inlinevirtual

Computes derivative of the equivalent strain with regards to strain.

Parameters

[out]	answer	Contains the resulting derivative.
	strain	Strain vector.
	gp	Integration point.
	tStep	Time step.

Reimplemented in oofem::IsotropicDamageMaterial1.

Definition at line 246 of file isodamagemodel.h.

References oofem::FEMComponent::giveInputRecord(), oofem::MaterialStatus::initializeFrom(), and OOFEM_ERROR.

Referenced by givePlaneStressStiffMtrx().

MaterialStatus* oofem::IsotropicDamageMaterial::CreateStatus ( GaussPoint * gp ) const

inlinevirtual

Creates new copy of associated status and inserts it into given integration point.

Parameters

gp	Integration point where newly created status will be stored.

Returns: Reference to new status.

Reimplemented from oofem::Material.

Definition at line 259 of file isodamagemodel.h.

References oofem::FEMComponent::domain, and oofem::IsotropicDamageMaterialStatus::IsotropicDamageMaterialStatus().

virtual double oofem::IsotropicDamageMaterial::damageFunctionPrime	(	double	kappa,
		GaussPoint *	gp
	)

inlineprotectedvirtual

Returns the value of derivative of damage function wrt damage-driving variable kappa corresponding to a given value of the kappa, depending on the type of selected damage law.

Parameters

kappa	Equivalent strain measure.
gp	Integration point.

Reimplemented in oofem::IsotropicDamageMaterial1.

Definition at line 278 of file isodamagemodel.h.

References OOFEM_ERROR.

Referenced by givePlaneStressStiffMtrx().

virtual double oofem::IsotropicDamageMaterial::evaluatePermanentStrain	(	double	kappa,
		double	omega
	)

inlinevirtual

Reimplemented in oofem::IsotropicDamageMaterial1.

Definition at line 221 of file isodamagemodel.h.

References oofem::IsotropicDamageMaterialStatus::kappa.

Referenced by giveRealStressVector().

double oofem::IsotropicDamageMaterial::give	(	int	aProperty,
		GaussPoint *	gp
	)

virtual

Returns the value of material property 'aProperty'.

Property must be identified by unique int id. Integration point also passed to allow for materials with spatially varying properties

Parameters

aProperty	ID of property requested.
gp	Integration point,

Returns: Property value.

Reimplemented from oofem::Material.

Reimplemented in oofem::IsotropicDamageMaterial1.

Definition at line 351 of file isodamagemodel.C.

References oofem::Material::give(), and linearElasticMaterial.

Referenced by oofem::IsotropicDamageMaterial1::give().

void oofem::IsotropicDamageMaterial::give1dStressStiffMtrx	(	FloatMatrix &	answer,
		MatResponseMode	mmode,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

protectedvirtual

Method for computing 1d stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to 1d stiffness using reduce method described above. However, this reduction is quite time consuming and if it is possible, it is recommended to overload this method and provide direct method for computing particular stiffness matrix.

Parameters

answer	Stiffness matrix.
mmode	Material response mode.
gp	Integration point, which load history is used.
tStep	Time step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::IDGMaterial.

Definition at line 240 of file isodamagemodel.C.

References giveLinearElasticMaterial(), oofem::Material::giveStatus(), oofem::StructuralMaterial::giveStiffnessMatrix(), oofem::IsotropicDamageMaterialStatus::giveTempDamage(), maxOmega, oofem::min(), and oofem::FloatMatrix::times().

void oofem::IsotropicDamageMaterial::give3dMaterialStiffnessMatrix	(	FloatMatrix &	answer,
		MatResponseMode	mode,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

virtual

Computes full 3d material stiffness matrix at given integration point, time, respecting load history in integration point.

Parameters

answer	Computed results.
mode	Material response mode.
gp	Integration point.
tStep	Time step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 75 of file isodamagemodel.C.

References oofem::StructuralMaterial::give3dMaterialStiffnessMatrix(), giveLinearElasticMaterial(), oofem::Material::giveStatus(), oofem::IsotropicDamageMaterialStatus::giveTempDamage(), maxOmega, oofem::min(), and oofem::FloatMatrix::times().

virtual const char* oofem::IsotropicDamageMaterial::giveClassName ( ) const

inlinevirtual

Returns: Class name of the receiver.

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::IsotropicDamageMaterial1, oofem::IDNLMaterial, oofem::MazarsMaterial, oofem::MazarsNLMaterial, and oofem::IDGMaterial.

Definition at line 194 of file isodamagemodel.h.

void oofem::IsotropicDamageMaterial::giveInputRecord ( DynamicInputRecord & input )

virtual

Setups the input record string of receiver.

Parameters

input Dynamic input record to be filled by receiver.

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::IsotropicDamageMaterial1, and oofem::IDNLMaterial.

Definition at line 375 of file isodamagemodel.C.

References _IFT_IsotropicDamageMaterial_maxOmega, _IFT_IsotropicDamageMaterial_talpha, oofem::StructuralMaterial::giveInputRecord(), maxOmega, oofem::DynamicInputRecord::setField(), and tempDillatCoeff.

Referenced by oofem::IsotropicDamageMaterial1::giveInputRecord().

int oofem::IsotropicDamageMaterial::giveIPValue	(	FloatArray &	answer,
		GaussPoint *	gp,
		InternalStateType	type,
		TimeStep *	tStep
	)

virtual

Returns the integration point corresponding value in Reduced form.

Parameters

answer	Contain corresponding ip value, zero sized if not available.
gp	Integration point to which the value refers.
type	Determines the type of internal variable.
tStep	Determines the time step.

Returns: Nonzero if the assignment can be done, zero if this type of variable is not supported.

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::IDNLMaterial.

Definition at line 262 of file isodamagemodel.C.

Referenced by oofem::IDNLMaterial::giveIPValue().

LinearElasticMaterial* oofem::IsotropicDamageMaterial::giveLinearElasticMaterial ( )

inline

Returns reference to undamaged (bulk) material.

Definition at line 197 of file isodamagemodel.h.

References oofem::IntegrationPointStatus::gp.

Referenced by oofem::IDNLMaterial::computeAngleAndSigmaRatio(), oofem::IsotropicDamageMaterial1::computeDamageParamForCohesiveCrack(), oofem::IsotropicDamageMaterial1::computeEquivalentStrain(), oofem::IsotropicDamageMaterial1::computeEta(), oofem::IsotropicDamageMaterial1::damageFunctionPrime(), oofem::IDGMaterial::give1dGprime(), oofem::IDGMaterial::give1dStressStiffMtrx(), give1dStressStiffMtrx(), give3dMaterialStiffnessMatrix(), oofem::IDNLMaterial::giveLocalNonlocalStiffnessContribution(), oofem::IDNLMaterial::giveNormalElasticStiffnessMatrix(), oofem::IDGMaterial::givePlaneStrainStiffMtrx(), givePlaneStrainStiffMtrx(), oofem::IDGMaterial::givePlaneStressStiffMtrx(), givePlaneStressStiffMtrx(), giveRealStressVector(), oofem::IDGMaterial::giveRealStressVectorGrad(), oofem::IDNLMaterial::giveRemoteNonlocalStiffnessContribution(), and oofem::IsotropicDamageMaterial1::initDamaged().

void oofem::IsotropicDamageMaterial::givePlaneStrainStiffMtrx	(	FloatMatrix &	answer,
		MatResponseMode	mmode,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

protectedvirtual

Method for computing plane strain stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to plane strain stiffness using reduce method described above. However, this reduction is quite time consuming and if it is possible, it is recommended to overload this method and provide direct method for computing particular stiffness matrix. Note: as already described, if zero strain component is imposed (Plane strain, ..) this condition must be taken into account in geometrical relations, and corresponding component has to be included in reduced vector. (So plane strain conditions are $\epsilon_z = \gamma_{xz} = \gamma_{yz} = 0$ , but relations for $\epsilon_z$ and $\sigma_z$ are included).

Parameters

answer	Stiffness matrix.
mmode	Material response mode.
gp	Integration point, which load history is used.
tStep	Time step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::IDGMaterial.

Definition at line 222 of file isodamagemodel.C.

References giveLinearElasticMaterial(), oofem::Material::giveStatus(), oofem::StructuralMaterial::giveStiffnessMatrix(), oofem::IsotropicDamageMaterialStatus::giveTempDamage(), maxOmega, oofem::min(), and oofem::FloatMatrix::times().

void oofem::IsotropicDamageMaterial::givePlaneStressStiffMtrx	(	FloatMatrix &	answer,
		MatResponseMode	mmode,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

protectedvirtual

Method for computing plane stress stiffness matrix of receiver.

Default implementation computes 3d stiffness matrix using give3dMaterialStiffnessMatrix and reduces it to plane stress stiffness using reduce method described above. However, this reduction is quite time consuming and if it is possible, it is recommended to overload this method and provide direct method for computing particular stiffness matrix.

Parameters

answer	Stiffness matrix.
mmode	Material response mode.
gp	Integration point, which load history is used.
tStep	Time step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::IDGMaterial.

Definition at line 182 of file isodamagemodel.C.

References oofem::FloatMatrix::add(), oofem::FloatMatrix::beDyadicProductOf(), computeEta(), damageFunctionPrime(), oofem::IsotropicDamageMaterialStatus::giveDamage(), giveLinearElasticMaterial(), oofem::Material::giveStatus(), oofem::StructuralMaterial::giveStiffnessMatrix(), oofem::IsotropicDamageMaterialStatus::giveTempDamage(), oofem::IsotropicDamageMaterialStatus::giveTempKappa(), oofem::StructuralMaterialStatus::giveTempStrainVector(), oofem::StructuralMaterialStatus::giveTempStressVector(), maxOmega, oofem::min(), oofem::FloatArray::times(), and oofem::FloatMatrix::times().

void oofem::IsotropicDamageMaterial::giveRealStressVector	(	FloatArray &	answer,
		GaussPoint *	gp,
		const FloatArray &	reducedStrain,
		TimeStep *	tStep
	)

virtual

Computes the real stress vector for given total strain and integration point.

The total strain is defined as strain computed directly from displacement field at given time. The stress independent parts (temperature, eigenstrains) are subtracted in constitutive driver. The service should use previously reached equilibrium history variables. Also it should update temporary history variables in status according to newly reached state. The temporary history variables are moved into equilibrium ones after global structure equilibrium has been reached by iteration process.

Parameters

answer	Stress vector in reduced form. For large deformations it is treated as the second Piola-Kirchoff stress.
gp	Integration point.
reducedStrain	Strain vector in reduced form. For large deformations it is treated as the Green-Lagrange strain.
tStep	Current time step (most models are able to respond only when tStep is current time step).

Todo:: Move this to StructuralCrossSection ?

Reimplemented from oofem::StructuralMaterial.

Definition at line 99 of file isodamagemodel.C.

References oofem::FloatArray::at(), oofem::FloatArray::beProductOf(), computeDamageParam(), computeEquivalentStrain(), oofem::IsotropicDamageMaterialStatus::computeWork(), evaluatePermanentStrain(), oofem::IsotropicDamageMaterialStatus::giveDamage(), oofem::IsotropicDamageMaterialStatus::giveKappa(), giveLinearElasticMaterial(), oofem::FloatArray::giveSize(), oofem::Material::giveStatus(), oofem::StructuralMaterial::giveStiffnessMatrix(), oofem::StructuralMaterial::giveStressDependentPartOfStrainVector(), idm_damageLevelCR, idm_strainLevelCR, initDamaged(), oofem::Material::initTempStatus(), oofem::StructuralMaterialStatus::letTempStrainVectorBe(), oofem::StructuralMaterialStatus::letTempStressVectorBe(), llcriteria, OOFEM_ERROR, permStrain, oofem::IsotropicDamageMaterialStatus::setTempDamage(), oofem::IsotropicDamageMaterialStatus::setTempKappa(), and oofem::FloatMatrix::times().

Referenced by oofem::IsotropicDamageMaterial1::MMI_update().

virtual void oofem::IsotropicDamageMaterial::giveRealStressVector_1d	(	FloatArray &	answer,
		GaussPoint *	gp,
		const FloatArray &	reducedE,
		TimeStep *	tStep
	)

inlinevirtual

Default implementation relies on giveRealStressVector_StressControl.

Reimplemented from oofem::StructuralMaterial.

Definition at line 215 of file isodamagemodel.h.

virtual void oofem::IsotropicDamageMaterial::giveRealStressVector_3d	(	FloatArray &	answer,
		GaussPoint *	gp,
		const FloatArray &	reducedE,
		TimeStep *	tStep
	)

inlinevirtual

Default implementation relies on giveRealStressVector for second Piola-Kirchoff stress.

Reimplemented from oofem::StructuralMaterial.

Definition at line 207 of file isodamagemodel.h.

virtual void oofem::IsotropicDamageMaterial::giveRealStressVector_PlaneStrain	(	FloatArray &	answer,
		GaussPoint *	gp,
		const FloatArray &	reducedE,
		TimeStep *	tStep
	)

inlinevirtual

Default implementation relies on giveRealStressVector_3d.

Reimplemented from oofem::StructuralMaterial.

Definition at line 209 of file isodamagemodel.h.

virtual void oofem::IsotropicDamageMaterial::giveRealStressVector_PlaneStress	(	FloatArray &	answer,
		GaussPoint *	gp,
		const FloatArray &	reducedE,
		TimeStep *	tStep
	)

inlinevirtual

Default implementation relies on giveRealStressVector_StressControl.

Reimplemented from oofem::StructuralMaterial.

Definition at line 213 of file isodamagemodel.h.

virtual void oofem::IsotropicDamageMaterial::giveRealStressVector_StressControl	(	FloatArray &	answer,
		GaussPoint *	gp,
		const FloatArray &	reducedE,
		const IntArray &	strainControl,
		TimeStep *	tStep
	)

inlinevirtual

Iteratively calls giveRealStressVector_3d to find the stress controlled equal to zero·

Todo:: We need a relative tolerance here! A relative tolerance like this could work, but if a really small increment is performed it won't work (it will be limited by machine precision)

Reimplemented from oofem::StructuralMaterial.

Definition at line 211 of file isodamagemodel.h.

void oofem::IsotropicDamageMaterial::giveThermalDilatationVector	(	FloatArray &	answer,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

virtual

Returns a vector of coefficients of thermal dilatation in direction of each material principal (local) axis.

Parameters

answer	Vector of thermal dilatation coefficients.
gp	Integration point.
tStep	Time step (most models are able to respond only when tStep is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 335 of file isodamagemodel.C.

References oofem::FloatArray::at(), oofem::FloatArray::resize(), tempDillatCoeff, and oofem::FloatArray::zero().

int oofem::IsotropicDamageMaterial::hasMaterialModeCapability ( MaterialMode mode )

virtual

Tests if material supports material mode.

Parameters

mode	Required material mode.

Returns: Nonzero if supported, zero otherwise.

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::IDGMaterial.

Definition at line 65 of file isodamagemodel.C.

virtual int oofem::IsotropicDamageMaterial::hasNonLinearBehaviour ( )

inlinevirtual

Returns nonzero if receiver is non linear.

Reimplemented from oofem::Material.

Definition at line 191 of file isodamagemodel.h.

virtual void oofem::IsotropicDamageMaterial::initDamaged	(	double	kappa,
		FloatArray &	totalStrainVector,
		GaussPoint *	gp
	)

inlineprotectedvirtual

Abstract service allowing to perform some initialization, when damage first appear.

Parameters

kappa	Scalar measure of strain level.
totalStrainVector	Current total strain vector.
gp	Integration point.

Reimplemented in oofem::IsotropicDamageMaterial1, oofem::IDNLMaterial, oofem::MazarsNLMaterial, and oofem::MazarsMaterial.

Definition at line 268 of file isodamagemodel.h.

Referenced by giveRealStressVector().

IRResultType oofem::IsotropicDamageMaterial::initializeFrom ( InputRecord * ir )

virtual

Initializes receiver according to object description stored in input record.

This function is called immediately after creating object using constructor. Input record can be imagined as data record in component database belonging to receiver. Receiver may use value-name extracting functions to extract particular field from record.

See also: IR_GIVE_FIELD; IR_GIVE_OPTIONAL_FIELD

Parameters

ir	Input record to initialize from.

Returns: IRResultType

Reimplemented from oofem::StructuralMaterial.

Reimplemented in oofem::IsotropicDamageMaterial1, oofem::IDNLMaterial, oofem::MazarsMaterial, oofem::MazarsNLMaterial, and oofem::IDGMaterial.

Definition at line 357 of file isodamagemodel.C.

References _IFT_IsotropicDamageMaterial_maxOmega, _IFT_IsotropicDamageMaterial_permstrain, _IFT_IsotropicDamageMaterial_talpha, oofem::StructuralMaterial::initializeFrom(), IR_GIVE_FIELD, IR_GIVE_OPTIONAL_FIELD, oofem::max(), maxOmega, oofem::min(), permStrain, and tempDillatCoeff.

Referenced by oofem::MazarsMaterial::initializeFrom(), and oofem::IsotropicDamageMaterial1::initializeFrom().

Member Data Documentation

LinearElasticMaterial* oofem::IsotropicDamageMaterial::linearElasticMaterial

protected

Reference to bulk (undamaged) material.

Definition at line 176 of file isodamagemodel.h.

Referenced by give(), oofem::IsotropicDamageMaterial1::giveInputRecord(), oofem::MazarsMaterial::initializeFrom(), oofem::IsotropicDamageMaterial1::initializeFrom(), IsotropicDamageMaterial(), oofem::IsotropicDamageMaterial1::IsotropicDamageMaterial1(), and ~IsotropicDamageMaterial().

enum oofem::IsotropicDamageMaterial::loaUnloCriterium oofem::IsotropicDamageMaterial::llcriteria

protected

Referenced by giveRealStressVector(), oofem::IDGMaterial::giveRealStressVectorGrad(), IsotropicDamageMaterial(), and oofem::MazarsMaterial::MazarsMaterial().

double oofem::IsotropicDamageMaterial::maxOmega

protected

Maximum limit on omega. The purpose is elimination of a too compliant material which may cause convergence problems. Set to something like 0.99 if needed.

Definition at line 170 of file isodamagemodel.h.

Referenced by oofem::IsotropicDamageMaterial1::computeDamageParamForCohesiveCrack(), oofem::IDGMaterial::give1dStressStiffMtrx(), give1dStressStiffMtrx(), give3dMaterialStiffnessMatrix(), giveInputRecord(), oofem::IDGMaterial::givePlaneStrainGprime(), oofem::IDGMaterial::givePlaneStrainStiffMtrx(), givePlaneStrainStiffMtrx(), oofem::IDGMaterial::givePlaneStressGprime(), oofem::IDGMaterial::givePlaneStressStiffMtrx(), givePlaneStressStiffMtrx(), initializeFrom(), and IsotropicDamageMaterial().

int oofem::IsotropicDamageMaterial::permStrain

protected

Indicator of the type of permanent strain formulation (0 = standard damage with no permanent strain)

Definition at line 173 of file isodamagemodel.h.

Referenced by oofem::IsotropicDamageMaterial1::damageFunction(), oofem::IsotropicDamageMaterial1::evaluatePermanentStrain(), giveRealStressVector(), initializeFrom(), oofem::IsotropicDamageMaterial1::initializeFrom(), and IsotropicDamageMaterial().

double oofem::IsotropicDamageMaterial::tempDillatCoeff

protected

Coefficient of thermal dilatation.

Definition at line 167 of file isodamagemodel.h.

Referenced by giveInputRecord(), giveThermalDilatationVector(), and initializeFrom().

The documentation for this class was generated from the following files:

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation