This class allows for custom user materials from Abaqus (UMAT). More...

#include <abaqususermaterial.h>

Inheritance diagram for oofem::AbaqusUserMaterial:

Collaboration diagram for oofem::AbaqusUserMaterial:

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

virtual	~AbaqusUserMaterial ()
	Destructor. More...

virtual IRResultType	initializeFrom (InputRecord *ir)
	Reads the following values;. More...

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

virtual MaterialStatus *	CreateStatus (GaussPoint *gp) const
	Creates new copy of associated status and inserts it into given integration point. 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	give3dMaterialStiffnessMatrix_dPdF (FloatMatrix &answer, MatResponseMode mode, GaussPoint gp, TimeStep tStep)

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

virtual void	giveRealStressVector_3d (FloatArray &answer, GaussPoint gp, const FloatArray &reducedStrain, TimeStep tStep)
	Default implementation relies on giveRealStressVector for second Piola-Kirchoff stress. 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 int	giveIPValue (FloatArray &answer, GaussPoint gp, InternalStateType type, TimeStep tStep)
	Returns the integration point corresponding value in Reduced form. More...

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

virtual const char *	giveClassName () const

virtual const char *	giveInputRecordName () const

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

virtual	~StructuralMaterial ()
	Destructor. More...

virtual int	hasMaterialModeCapability (MaterialMode mode)
	Tests if material supports material mode. 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 (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_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_ShellStressControl (FloatArray &answer, GaussPoint gp, const FloatArray &reducedE, const IntArray &strainControl, TimeStep tStep)

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 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)

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

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

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

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

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

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

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...

Private Attributes
void *	umatobj
	Dynamically loaded umat. More...

void(*	umat )(double stress, double statev, double ddsdde, double sse, double spd, double scd, double rpl, double ddsddt, double drplde, double drpldt, double stran, double dstran, double time[2], double dtime, double temp, double dtemp, double predef[1], double dpred[1], char cmname[80], int ndi, int nshr, int ntens, int nstatv, double props, int nprops, double coords[3], double drot, double pnewdt, double celent, double dfgrd0, double dfgrd1, int noel, int npt, int layer, int kspt, int kstep, int kinc)
	Pointer to the dynamically loaded umat-function (translated to C) More...

char	cmname [80]
	Name for material routine. More...

int	numState
	Size of the state vector. More...

FloatArray	properties
	Material properties. More...

FloatArray	initialStress
	Initial stress. More...

int	mStressInterpretation
	Flag to determine how the stress and Jacobian are interpreted. More...

bool	mUseNumericalTangent
	Flag to determine if numerical tangent should be used. More...

double	mPerturbation
	Size of perturbation if numerical tangent is used. More...

std::string	filename
	Name of the file that contains the umat function. More...

Static Private Attributes
static int	n = 1
	Gausspoint counter. 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...

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...

Detailed Description

This class allows for custom user materials from Abaqus (UMAT).

Note: Experimental, subject to change. Many optional arguments haven't been dealt with properly (and few umat functions actually use all of them).; Nothing for large deformations have been tested.

Author: Mikael Öhman

The umat material should be compiled as a shared library. For example, compile like this;

* gfortran -fPIC -fdefault-real-8 -shared -Wl,-soname,umat.so -o umat.so my_umat_code.f
*

The interface for a user material file for Abaqus is as follows: SUBROUTINE UMAT(STRESS,STATEV,DDSDDE,SSE,SPD, SCD,RPL,DDSDDT,DRPLDE,DRPLDT, STRAN,DSTRAN,TIME,DTIME,TEMP,DTEMP,PREDEF,DPRED,CMNAME, NDI,NSHR,NTENS,NSTATV,PROPS,NPROPS,COORDS,DROT,PNEWDT, CELENT,DFGRD0,DFGRD1,NOEL,NPT,LAYER,KSPT,KSTEP,KINC)

CHARACTER*80 CMNAME DOUBLE PRECISION STRESS(NTENS),STATEV(NSTATV), DDSDDE(NTENS,NTENS),DDSDDT(NTENS),DRPLDE(NTENS), STRAN(NTENS),DSTRAN(NTENS),TIME(2),PREDEF(1),DPRED(1), PROPS(NPROPS),COORDS(3),DROT(3,3),DFGRD0(3,3),DFGRD1(3,3)

Definition at line 80 of file abaqususermaterial.h.

Constructor & Destructor Documentation

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

Constructor.

Definition at line 53 of file abaqususermaterial.C.

oofem::AbaqusUserMaterial::~AbaqusUserMaterial ( )

virtual

Destructor.

Definition at line 61 of file abaqususermaterial.C.

References umatobj.

Member Function Documentation

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

virtual

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 144 of file abaqususermaterial.C.

References oofem::FEMComponent::giveDomain(), n, and numState.

void oofem::AbaqusUserMaterial::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).

Todo:: Make this hack fit more nicely into OOFEM in general;

Reimplemented from oofem::StructuralMaterial.

Definition at line 150 of file abaqususermaterial.C.

References oofem::FloatArray::at(), oofem::GaussPoint::giveMaterialStatus(), giveRealStressVector_3d(), oofem::FloatArray::giveSize(), oofem::Material::giveStatus(), oofem::AbaqusUserMaterialStatus::giveTempTangent(), oofem::AbaqusUserMaterialStatus::hasTangent(), oofem::FloatMatrix::printYourself(), oofem::FloatArray::subtract(), oofem::FloatArray::times(), and oofem::FloatArray::zero().

void oofem::AbaqusUserMaterial::give3dMaterialStiffnessMatrix_dPdF	(	FloatMatrix &	answer,
		MatResponseMode	mode,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

virtual

Todo:: Make this hack fit more nicely into OOFEM in general;

Reimplemented from oofem::StructuralMaterial.

Definition at line 187 of file abaqususermaterial.C.

References oofem::FloatArray::at(), giveFirstPKStressVector_3d(), oofem::GaussPoint::giveMaterialStatus(), oofem::Material::giveStatus(), oofem::StructuralMaterialStatus::giveTempFVector(), oofem::AbaqusUserMaterialStatus::giveTempTangent(), oofem::AbaqusUserMaterialStatus::hasTangent(), mPerturbation, mUseNumericalTangent, oofem::FloatMatrix::setColumn(), oofem::FloatArray::subtract(), and oofem::FloatArray::times().

Referenced by givePlaneStrainStiffMtrx_dPdF().

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

inlinevirtual

Returns: Class name of the receiver.

Reimplemented from oofem::StructuralMaterial.

Definition at line 162 of file abaqususermaterial.h.

void oofem::AbaqusUserMaterial::giveFirstPKStressVector_3d	(	FloatArray &	answer,
		GaussPoint *	gp,
		const FloatArray &	reducedF,
		TimeStep *	tStep
	)

virtual

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

Todo:: Check this. I'm just guessing. Maybe intrinsic time instead?

Todo:: Right default value? umat routines may change this (although we ignore it)

Todo:: Large deformations?

Todo:: Include the characteristic element length

Todo:: No idea about these parameters

Todo:: Have this function:

Reimplemented from oofem::StructuralMaterial.

Definition at line 412 of file abaqususermaterial.C.

Referenced by give3dMaterialStiffnessMatrix_dPdF().

void oofem::AbaqusUserMaterial::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.

Definition at line 134 of file abaqususermaterial.C.

References _IFT_AbaqusUserMaterial_name, _IFT_AbaqusUserMaterial_numState, _IFT_AbaqusUserMaterial_properties, _IFT_AbaqusUserMaterial_userMaterial, cmname, filename, oofem::StructuralMaterial::giveInputRecord(), numState, properties, and oofem::DynamicInputRecord::setField().

virtual const char* oofem::AbaqusUserMaterial::giveInputRecordName ( ) const

inlinevirtual

Returns: Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 163 of file abaqususermaterial.h.

References _IFT_AbaqusUserMaterial_Name.

int oofem::AbaqusUserMaterial::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.

Definition at line 620 of file abaqususermaterial.C.

References oofem::FloatArray::add(), oofem::StructuralMaterial::giveIPValue(), oofem::AbaqusUserMaterialStatus::giveStateVector(), oofem::Material::giveStatus(), oofem::StructuralMaterialStatus::giveStressVector(), and initialStress.

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

virtual

Reimplemented from oofem::StructuralMaterial.

Definition at line 246 of file abaqususermaterial.C.

References give3dMaterialStiffnessMatrix_dPdF(), and oofem::StructuralMaterial::giveReducedMatrixForm().

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

virtual

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

Todo:: Check this. I'm just guessing. Maybe intrinsic time instead?

Todo:: Right default value? umat routines may change this (although we ignore it)

Todo:: Include the characteristic element length

Todo:: No idea about these parameters

Reimplemented from oofem::StructuralMaterial.

Definition at line 255 of file abaqususermaterial.C.

References oofem::FloatArray::add(), oofem::FloatArray::beDifferenceOf(), oofem::FloatMatrix::beUnitMatrix(), oofem::FloatArray::changeComponentOrder(), oofem::FloatMatrix::changeComponentOrder(), cmname, oofem::Element::computeGlobalCoordinates(), oofem::GaussPoint::giveElement(), oofem::GaussPoint::giveNaturalCoordinates(), oofem::FEMComponent::giveNumber(), oofem::FloatArray::givePointer(), oofem::FloatMatrix::givePointer(), oofem::FloatArray::giveSize(), oofem::AbaqusUserMaterialStatus::giveStateVector(), oofem::Material::giveStatus(), oofem::StructuralMaterialStatus::giveStrainVector(), oofem::StructuralMaterialStatus::giveStressVector(), oofem::TimeStep::giveTargetTime(), oofem::TimeStep::giveTimeIncrement(), initialStress, oofem::AbaqusUserMaterialStatus::letTempStateVectorBe(), oofem::StructuralMaterialStatus::letTempStrainVectorBe(), oofem::StructuralMaterialStatus::letTempStressVectorBe(), oofem::AbaqusUserMaterialStatus::letTempTangentBe(), numState, OOFEM_LOG_DEBUG, properties, oofem::FloatArray::subtract(), and umat.

Referenced by give3dMaterialStiffnessMatrix().

virtual int oofem::AbaqusUserMaterial::hasNonLinearBehaviour ( )

inlinevirtual

Returns nonzero if receiver is non linear.

Reimplemented from oofem::Material.

Definition at line 161 of file abaqususermaterial.h.

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

virtual

Reads the following values;.

numstate (required, integer): number of state variables.
properties (required, FloatArray): material property values.
umat (required, string): Filename of umat file dynamically library.
name (optional, string, default "umat"): Name of material model (used for input to umat routine).

Reimplemented from oofem::StructuralMaterial.

Definition at line 75 of file abaqususermaterial.C.

References _IFT_AbaqusUserMaterial_initialStress, _IFT_AbaqusUserMaterial_name, _IFT_AbaqusUserMaterial_numericalTangent, _IFT_AbaqusUserMaterial_numericalTangentPerturbation, _IFT_AbaqusUserMaterial_numState, _IFT_AbaqusUserMaterial_properties, _IFT_AbaqusUserMaterial_userMaterial, cmname, filename, oofem::InputRecord::hasField(), oofem::StructuralMaterial::initializeFrom(), initialStress, IR_GIVE_FIELD, IR_GIVE_OPTIONAL_FIELD, oofem::IRRT_OK, mPerturbation, mUseNumericalTangent, numState, OOFEM_ERROR, properties, umat, and umatobj.

Member Data Documentation

char oofem::AbaqusUserMaterial::cmname[80]

private

Name for material routine.

Definition at line 97 of file abaqususermaterial.h.

Referenced by giveFirstPKStressVector_3d(), giveInputRecord(), giveRealStressVector_3d(), and initializeFrom().

std :: string oofem::AbaqusUserMaterial::filename

private

Name of the file that contains the umat function.

Definition at line 121 of file abaqususermaterial.h.

Referenced by giveInputRecord(), and initializeFrom().

FloatArray oofem::AbaqusUserMaterial::initialStress

private

Initial stress.

Definition at line 103 of file abaqususermaterial.h.

Referenced by giveIPValue(), giveRealStressVector_3d(), and initializeFrom().

double oofem::AbaqusUserMaterial::mPerturbation

private

Size of perturbation if numerical tangent is used.

Definition at line 118 of file abaqususermaterial.h.

Referenced by give3dMaterialStiffnessMatrix_dPdF(), and initializeFrom().

int oofem::AbaqusUserMaterial::mStressInterpretation

private

Flag to determine how the stress and Jacobian are interpreted.

0 implies that the P and dPdF are returned from the umat routine.

Definition at line 108 of file abaqususermaterial.h.

Referenced by giveFirstPKStressVector_3d().

bool oofem::AbaqusUserMaterial::mUseNumericalTangent

private

Flag to determine if numerical tangent should be used.

Definition at line 113 of file abaqususermaterial.h.

Referenced by give3dMaterialStiffnessMatrix_dPdF(), and initializeFrom().

int oofem::AbaqusUserMaterial::n = 1

staticprivate

Gausspoint counter.

Definition at line 84 of file abaqususermaterial.h.

Referenced by CreateStatus().

int oofem::AbaqusUserMaterial::numState

private

Size of the state vector.

Definition at line 99 of file abaqususermaterial.h.

Referenced by CreateStatus(), giveFirstPKStressVector_3d(), giveInputRecord(), giveRealStressVector_3d(), and initializeFrom().

FloatArray oofem::AbaqusUserMaterial::properties

private

Material properties.

Definition at line 101 of file abaqususermaterial.h.

Referenced by giveFirstPKStressVector_3d(), giveInputRecord(), giveRealStressVector_3d(), and initializeFrom().

void( * oofem::AbaqusUserMaterial::umat) (double *stress, double *statev, double *ddsdde, double *sse, double *spd,double *scd, double *rpl, double *ddsddt, double *drplde, double *drpldt,double *stran, double *dstran, double time[2], double *dtime, double *temp,double *dtemp, double predef[1], double dpred[1], char cmname[80], int *ndi,int *nshr, int *ntens, int *nstatv, double *props, int *nprops, double coords[3],double *drot, double *pnewdt, double *celent, double *dfgrd0, double *dfgrd1,int *noel, int *npt, int *layer, int *kspt, int *kstep, int *kinc)

private

Pointer to the dynamically loaded umat-function (translated to C)

Definition at line 89 of file abaqususermaterial.h.

Referenced by giveFirstPKStressVector_3d(), giveRealStressVector_3d(), and initializeFrom().

void* oofem::AbaqusUserMaterial::umatobj

private

Dynamically loaded umat.

Definition at line 86 of file abaqususermaterial.h.

Referenced by initializeFrom(), and ~AbaqusUserMaterial().

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

Public Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation