oofem::StructuralCrossSection Class Reference

#include <structuralcrosssection.h>

Inheritance diagram for oofem::StructuralCrossSection:

Collaboration diagram for oofem::StructuralCrossSection:

Public Member Functions
	StructuralCrossSection (int n, Domain *d)
FloatArray	giveRealStresses (const FloatArray &reducedStrain, GaussPoint *gp, TimeStep *tStep) const
virtual FloatArrayF< 6 >	giveRealStress_3d (const FloatArrayF< 6 > &reducedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 6 >	giveRealStress_3dDegeneratedShell (const FloatArrayF< 6 > &reducedStrain, GaussPoint *gp, TimeStep *tStep) const
virtual FloatArrayF< 4 >	giveRealStress_PlaneStrain (const FloatArrayF< 4 > &reducedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 3 >	giveRealStress_PlaneStress (const FloatArrayF< 3 > &reducedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 1 >	giveRealStress_1d (const FloatArrayF< 1 > &reducedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 2 >	giveRealStress_Warping (const FloatArrayF< 2 > &reducedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 6, 6 >	giveStiffnessMatrix_3d (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 3, 3 >	giveStiffnessMatrix_PlaneStress (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 4, 4 >	giveStiffnessMatrix_PlaneStrain (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 1, 1 >	giveStiffnessMatrix_1d (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 3 >	giveGeneralizedStress_Beam2d (const FloatArrayF< 3 > &generalizedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 6 >	giveGeneralizedStress_Beam3d (const FloatArrayF< 6 > &generalizedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 5 >	giveGeneralizedStress_Plate (const FloatArrayF< 5 > &generalizedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 8 >	giveGeneralizedStress_Shell (const FloatArrayF< 8 > &generalizedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 9 >	giveGeneralizedStress_ShellRot (const FloatArrayF< 9 > &generalizedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 4 >	giveGeneralizedStress_MembraneRot (const FloatArrayF< 4 > &generalizedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 3 >	giveGeneralizedStress_PlateSubSoil (const FloatArrayF< 3 > &generalizedStrain, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 6 >	giveGeneralizedStress_3dBeamSubSoil (const FloatArrayF< 6 > &generalizedStrain, GaussPoint *gp, TimeStep *tStep) const
virtual FloatArray	giveFirstPKStresses (const FloatArray &reducedF, GaussPoint *gp, TimeStep *tStep) const
virtual FloatArrayF< 9 >	giveFirstPKStress_3d (const FloatArrayF< 9 > &reducedF, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 5 >	giveFirstPKStress_PlaneStrain (const FloatArrayF< 5 > &reducedF, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 4 >	giveFirstPKStress_PlaneStress (const FloatArrayF< 4 > &reducedF, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArrayF< 1 >	giveFirstPKStress_1d (const FloatArrayF< 1 > &reducedF, GaussPoint *gp, TimeStep *tStep) const =0
virtual void	giveCauchyStresses (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedFIncrement, TimeStep *tStep)=0
virtual void	giveEshelbyStresses (FloatArray &answer, GaussPoint *gp, const FloatArray &reducedvF, TimeStep *tStep)
virtual void	giveStiffnessMatrix_dCde (FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)=0
virtual void	giveCharMaterialStiffnessMatrix (FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)=0
virtual FloatMatrixF< 3, 3 >	give2dBeamStiffMtrx (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 6, 6 >	give3dBeamStiffMtrx (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 6, 6 >	give3dBeamSubSoilStiffMtrx (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const
virtual FloatMatrixF< 5, 5 >	give2dPlateStiffMtrx (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 8, 8 >	give3dShellStiffMtrx (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 9, 9 >	give3dShellRotStiffMtrx (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 6, 6 >	give3dDegeneratedShellStiffMtrx (MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) const
virtual FloatMatrixF< 4, 4 >	giveMembraneRotStiffMtrx (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 3, 3 >	give2dPlateSubSoilStiffMtrx (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual void	giveCharMaterialStiffnessMatrix_dPdF (FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep)=0
virtual FloatMatrixF< 9, 9 >	giveStiffnessMatrix_dPdF_3d (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 5, 5 >	giveStiffnessMatrix_dPdF_PlaneStrain (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 4, 4 >	giveStiffnessMatrix_dPdF_PlaneStress (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatMatrixF< 1, 1 >	giveStiffnessMatrix_dPdF_1d (MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) const =0
virtual FloatArray *	imposeStressConstrainsOnGradient (GaussPoint *gp, FloatArray *gradientStressVector3d)
virtual FloatArray *	imposeStrainConstrainsOnGradient (GaussPoint *gp, FloatArray *gradientStressVector3d)
int	testCrossSectionExtension (CrossSectExtension ext) override
Material *	giveMaterial (IntegrationPoint *ip) const override
virtual Interface *	giveMaterialInterface (InterfaceType t, IntegrationPoint *ip)
virtual void	createMaterialStatus (GaussPoint &iGP)=0
int	checkConsistency () override=0
bool	isCharacteristicMtrxSymmetric (MatResponseMode mode) const override=0
Public Member Functions inherited from oofem::CrossSection
	CrossSection (int n, Domain *d)
virtual	~CrossSection ()
	Destructor.
int	giveSetNumber () const
virtual bool	hasProperty (CrossSectionProperty a)
virtual double	give (CrossSectionProperty a, GaussPoint *gp) const
virtual double	give (CrossSectionProperty a, const FloatArray &coords, Element *elem, bool local=true) const
virtual double	give (int aProperty, GaussPoint *gp) const
void	printYourself () override
	Prints receiver state on stdout. Useful for debugging.
virtual int	setupIntegrationPoints (IntegrationRule &irule, int npoints, Element *element)
virtual int	setupIntegrationPoints (IntegrationRule &irule, int npointsXY, int npointsZ, Element *element)
virtual int	giveIPValue (FloatArray &answer, GaussPoint *ip, InternalStateType type, TimeStep *tStep)
virtual int	packUnknowns (DataStream &buff, TimeStep *tStep, GaussPoint *ip)=0
virtual int	unpackAndUpdateUnknowns (DataStream &buff, TimeStep *tStep, GaussPoint *ip)=0
virtual int	estimatePackSize (DataStream &buff, GaussPoint *ip)=0
virtual double	predictRelativeComputationalCost (GaussPoint *ip)
virtual double	giveRelativeSelfComputationalCost ()
virtual double	predictRelativeRedistributionCost (GaussPoint *gp)
void	initializeFrom (InputRecord &ir) override
void	giveInputRecord (DynamicInputRecord &input) override
virtual void	saveIPContext (DataStream &stream, ContextMode mode, GaussPoint *gp)
virtual void	restoreIPContext (DataStream &stream, ContextMode mode, GaussPoint *gp)
void	saveContext (DataStream &stream, ContextMode mode) override
void	restoreContext (DataStream &stream, ContextMode mode) override
Public Member Functions inherited from oofem::FEMComponent
	FEMComponent (int n, Domain *d)
virtual	~FEMComponent ()=default
	Virtual destructor.
virtual const char *	giveClassName () const =0
virtual const char *	giveInputRecordName () const =0
Domain *	giveDomain () const
virtual void	setDomain (Domain *d)
int	giveNumber () const
void	setNumber (int num)
virtual void	updateLocalNumbering (EntityRenumberingFunctor &f)
virtual void	initializeFrom (InputRecord &ir, int priority)
virtual void	initializeFinish ()
virtual void	postInitialize ()
	Performs post initialization steps. Called after all components are created and initialized.
virtual void	printOutputAt (FILE *file, TimeStep *tStep)
virtual Interface *	giveInterface (InterfaceType t)
std::string	errorInfo (const char *func) const
	Returns string for prepending output (used by error reporting macros).

Additional Inherited Members
Protected Attributes inherited from oofem::CrossSection
Dictionary	propertyDictionary
int	setNumber
Protected Attributes inherited from oofem::FEMComponent
int	number
	Component number.
Domain *	domain
	Link to domain object, useful for communicating with other FEM components.

Detailed Description

Abstract base class for all structural cross section models. It declares commons services provided by all structural cross section models. The implementation of this services is left on derived classes, which will implement cross section model dependent part. However, some general services are implemented here. For information, how to introduce integration points in cross section volume for macro integration point, see CrossSection reference manual.

At structural level of cross section or constitutive models are introduced several stress/strain modes. Full and reduced formats of stress/strain vectors are also introduced for convenience. The full format includes all components, even if they are zero due to stress/strain mode nature, but in the reduced format, only generally nonzero components are stored. (full format must used only if absolutely necessary, to avoid wasting of space. It is used by output routines to print results in general form). Methods for converting vectors between full and reduced format are provided. General full strain vector has one of the following forms:

1. strainVector3d {eps_x,eps_y,eps_z,gamma_yz,gamma_zx,gamma_xy}
2. For integrated cross section models (2d and 3d beams, plates and general shells) strainVectorShell {eps_x,eps_y,gamma_xy, kappa_x, kappa_y, kappa_xy, gamma_zx, gamma_zy}

Definition at line 75 of file structuralcrosssection.h.

Constructor & Destructor Documentation

StructuralCrossSection()

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

inline

Constructor. Creates cross section with given number, belonging to given domain.

Parameters

n	Cross section number.
d	Domain to which new cross section will belong.

Definition at line 83 of file structuralcrosssection.h.

References oofem::CrossSection::CrossSection().

Referenced by oofem::FiberedCrossSection::FiberedCrossSection(), oofem::LayeredCrossSection::LayeredCrossSection(), and oofem::SimpleCrossSection::SimpleCrossSection().

Member Function Documentation

checkConsistency()

int oofem::StructuralCrossSection::checkConsistency ( void )

overridepure virtual

Allows programmer to test some internal data, before computation begins. For example, one may use this function, to ensure that element has material with required capabilities is assigned to element. This must be done after all mesh components are instanciated.

Returns

Nonzero if receiver is consistent.

Reimplemented from oofem::FEMComponent.

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

createMaterialStatus()

virtual void oofem::StructuralCrossSection::createMaterialStatus ( GaussPoint & iGP )

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::StructuralElement::createMaterialStatus(), and oofem::XfemStructuralElementInterface::XfemElementInterface_updateIntegrationRule().

give2dBeamStiffMtrx()

virtual FloatMatrixF< 3, 3 > oofem::StructuralCrossSection::give2dBeamStiffMtrx ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Computes the stiffness matrix for 2d beams.

Parameters

answer	The requested matrix.
mode	Material response mode.
gp	Integration point.
tStep	Time step.

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::LIBeam2dNL::computeConstitutiveMatrixAt().

give2dPlateStiffMtrx()

virtual FloatMatrixF< 5, 5 > oofem::StructuralCrossSection::give2dPlateStiffMtrx ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Method for computing 2d plate stiffness matrix.

Parameters

answer	Stiffness matrix.
mode	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).

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::CCTPlate::computeConstitutiveMatrixAt(), oofem::DKTPlate::computeConstitutiveMatrixAt(), oofem::QDKTPlate::computeConstitutiveMatrixAt(), and oofem::Quad1Mindlin::computeConstitutiveMatrixAt().

give2dPlateSubSoilStiffMtrx()

virtual FloatMatrixF< 3, 3 > oofem::StructuralCrossSection::give2dPlateSubSoilStiffMtrx ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Method for computing subsoil stiffness matrix for plates.

Parameters

answer	Stiffness matrix.
mode	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).

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

give3dBeamStiffMtrx()

virtual FloatMatrixF< 6, 6 > oofem::StructuralCrossSection::give3dBeamStiffMtrx ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Computes the stiffness matrix for 2d beams.

Parameters

answer	The requested matrix.
mode	Material response mode.
gp	Integration point.
tStep	Time step.

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

References give3dBeamSubSoilStiffMtrx().

Referenced by oofem::LIBeam3d2::computeConstitutiveMatrixAt(), oofem::LIBeam3dNL2::computeConstitutiveMatrixAt(), and oofem::LIBeam3dNL::computeConstitutiveMatrixAt().

give3dBeamSubSoilStiffMtrx()

FloatMatrixF< 6, 6 > oofem::StructuralCrossSection::give3dBeamSubSoilStiffMtrx ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

virtual

Method for computing subsoil stiffness matrix for 2d beams.

Parameters

answer	Stiffness matrix.
mode	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).

Definition at line 162 of file structuralcrosssection.C.

References oofem::StructuralMaterial::give3dBeamSubSoilStiffMtrx(), and giveMaterial().

Referenced by give3dBeamStiffMtrx().

give3dDegeneratedShellStiffMtrx()

virtual FloatMatrixF< 6, 6 > oofem::StructuralCrossSection::give3dDegeneratedShellStiffMtrx ( MatResponseMode rMode, GaussPoint * gp, TimeStep * tStep ) const

inlinevirtual

Method for computing 3d shell stiffness matrix on degenerated shell elements.

Parameters

answer	Stiffness matrix.
mode	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 in oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Definition at line 274 of file structuralcrosssection.h.

References OOFEM_ERROR.

give3dShellRotStiffMtrx()

virtual FloatMatrixF< 9, 9 > oofem::StructuralCrossSection::give3dShellRotStiffMtrx ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Method for computing 3d shell (with normal rotation) stiffness matrix.

Parameters

answer	Stiffness matrix.
mode	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).

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

give3dShellStiffMtrx()

virtual FloatMatrixF< 8, 8 > oofem::StructuralCrossSection::give3dShellStiffMtrx ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Method for computing 3d shell stiffness matrix.

Parameters

answer	Stiffness matrix.
mode	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).

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::Quad1MindlinShell3D::computeConstitutiveMatrixAt().

giveCauchyStresses()

virtual void oofem::StructuralCrossSection::giveCauchyStresses ( FloatArray & answer, GaussPoint * gp, const FloatArray & reducedFIncrement, TimeStep * tStep )

pure virtual

Computes the Cauchy stress vector for a given increment of deformation gradient and given integration point. 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. Elements should always pass their requests to their cross section model, which performs necessary integration over its volume and invokes necessary material services for corresponding material model defined for given integration point.

Parameters

answer	Contains the Cauchy stress.
gp	Integration point.
reducedFIncrement	Increment of the deformation gradient vector in reduced form.

Todo

should this then be in a multiplicative way? /JB

Parameters

tStep

Current time step (most models are able to respond only when tStep is current time step).

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::NLStructuralElement::computeCauchyStressVector().

giveCharMaterialStiffnessMatrix()

virtual void oofem::StructuralCrossSection::giveCharMaterialStiffnessMatrix ( FloatMatrix & answer, MatResponseMode mode, GaussPoint * gp, TimeStep * tStep )

pure virtual

Computes the stiffness matrix of receiver in given integration point, respecting its history. The algorithm should use temporary or equilibrium history variables stored in integration point status to compute and return required result. Elements should always pass their requests to their cross section model, which performs necessary integration over its volume and invokes necessary material services for corresponding material model defined for given integration point.

Parameters

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

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::PhaseFieldElement::computeStiffnessMatrix_uu().

giveCharMaterialStiffnessMatrix_dPdF()

virtual void oofem::StructuralCrossSection::giveCharMaterialStiffnessMatrix_dPdF ( FloatMatrix & answer, MatResponseMode mode, GaussPoint * gp, TimeStep * tStep )

pure virtual

Computes the large strain stiffness matrix of receiver in given integration point, respecting its history. The algorithm should use temporary or equilibrium history variables stored in integration point status to compute and return required result. Elements should always pass their requests to their cross section model, which performs necessary integration over its volume and invokes necessary material services for corresponding material model defined for given integration point.

Parameters

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

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

giveEshelbyStresses()

virtual void oofem::StructuralCrossSection::giveEshelbyStresses ( FloatArray & answer, GaussPoint * gp, const FloatArray & reducedvF, TimeStep * tStep )

inlinevirtual

Computes the Eshelby stress vector. Does not update history variables, this is a postprocesing computation.

Parameters

answer	Contains the Eshelby stress.
gp	Integration point.
tStep	Current time step (most models are able to respond only when tStep is current time step).

Reimplemented in oofem::SimpleCrossSection.

Definition at line 187 of file structuralcrosssection.h.

Referenced by oofem::MaterialForceEvaluator::computeMaterialForce().

giveFirstPKStress_1d()

virtual FloatArrayF< 1 > oofem::StructuralCrossSection::giveFirstPKStress_1d ( const FloatArrayF< 1 > & reducedF, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by giveFirstPKStresses().

giveFirstPKStress_3d()

virtual FloatArrayF< 9 > oofem::StructuralCrossSection::giveFirstPKStress_3d ( const FloatArrayF< 9 > & reducedF, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by giveFirstPKStresses().

giveFirstPKStress_PlaneStrain()

virtual FloatArrayF< 5 > oofem::StructuralCrossSection::giveFirstPKStress_PlaneStrain ( const FloatArrayF< 5 > & reducedF, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by giveFirstPKStresses().

giveFirstPKStress_PlaneStress()

virtual FloatArrayF< 4 > oofem::StructuralCrossSection::giveFirstPKStress_PlaneStress ( const FloatArrayF< 4 > & reducedF, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by giveFirstPKStresses().

giveFirstPKStresses()

FloatArray oofem::StructuralCrossSection::giveFirstPKStresses ( const FloatArray & reducedF, GaussPoint * gp, TimeStep * tStep ) const

virtual

Computes the First Piola-Kirchoff stress vector for a given deformation gradient and integration point. 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. Elements should always pass their requests to their cross section model, which performs necessary integration over its volume and invokes necessary material services for corresponding material model defined for given integration point.

Parameters

answer	Contains the First Piola-Kirchoff stresses.
gp	Integration point.
reducedFIncrement	Increment of the deformation gradient vector in reduced form.

Todo

should this then be in a multiplicative way? /JB

Parameters

tStep

Current time step (most models are able to respond only when tStep is current time step).

Definition at line 83 of file structuralcrosssection.C.

References giveFirstPKStress_1d(), giveFirstPKStress_3d(), giveFirstPKStress_PlaneStrain(), giveFirstPKStress_PlaneStress(), oofem::GaussPoint::giveMaterialMode(), and OOFEM_ERROR.

Referenced by oofem::NLStructuralElement::computeFirstPKStressVector(), giveGeneralizedStress_PlateSubSoil(), and oofem::SolidShell::giveInternalForcesVector().

giveGeneralizedStress_3dBeamSubSoil()

FloatArrayF< 6 > oofem::StructuralCrossSection::giveGeneralizedStress_3dBeamSubSoil ( const FloatArrayF< 6 > & generalizedStrain, GaussPoint * gp, TimeStep * tStep ) const

virtual

Definition at line 155 of file structuralcrosssection.C.

References giveMaterial(), and oofem::StructuralMaterial::giveRealStressVector_3dBeamSubSoil().

Referenced by giveGeneralizedStress_PlateSubSoil().

giveGeneralizedStress_Beam2d()

virtual FloatArrayF< 3 > oofem::StructuralCrossSection::giveGeneralizedStress_Beam2d ( const FloatArrayF< 3 > & generalizedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Computes the generalized stress vector for given strain and integration point.

Parameters

answer	Contains result.
gp	Integration point.
generalizedStrain	Strain vector in reduced generalized form.
tStep	Current time step (most models are able to respond only when tStep is current time step).

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::LIBeam2dNL::computeStressVector(), and giveRealStresses().

giveGeneralizedStress_Beam3d()

virtual FloatArrayF< 6 > oofem::StructuralCrossSection::giveGeneralizedStress_Beam3d ( const FloatArrayF< 6 > & generalizedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::LIBeam3d2::computeStressVector(), oofem::LIBeam3dNL2::computeStressVector(), oofem::LIBeam3dNL::computeStressVector(), and giveRealStresses().

giveGeneralizedStress_MembraneRot()

virtual FloatArrayF< 4 > oofem::StructuralCrossSection::giveGeneralizedStress_MembraneRot ( const FloatArrayF< 4 > & generalizedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

giveGeneralizedStress_Plate()

virtual FloatArrayF< 5 > oofem::StructuralCrossSection::giveGeneralizedStress_Plate ( const FloatArrayF< 5 > & generalizedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::CCTPlate::computeStressVector(), oofem::DKTPlate::computeStressVector(), oofem::QDKTPlate::computeStressVector(), oofem::Quad1Mindlin::computeStressVector(), oofem::DKTPlate::computeVertexBendingMoments(), and giveRealStresses().

giveGeneralizedStress_PlateSubSoil()

virtual FloatArrayF< 3 > oofem::StructuralCrossSection::giveGeneralizedStress_PlateSubSoil ( const FloatArrayF< 3 > & generalizedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

References giveFirstPKStresses(), and giveGeneralizedStress_3dBeamSubSoil().

giveGeneralizedStress_Shell()

virtual FloatArrayF< 8 > oofem::StructuralCrossSection::giveGeneralizedStress_Shell ( const FloatArrayF< 8 > & generalizedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::Quad1MindlinShell3D::computeStressVector(), oofem::Quad1MindlinShell3D::giveInternalForcesVector(), and giveRealStresses().

giveGeneralizedStress_ShellRot()

virtual FloatArrayF< 9 > oofem::StructuralCrossSection::giveGeneralizedStress_ShellRot ( const FloatArrayF< 9 > & generalizedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by giveRealStresses().

giveMaterial()

Material * oofem::StructuralCrossSection::giveMaterial ( IntegrationPoint * ip ) const

inlineoverridevirtual

Todo

This shouldn't be optional

Implements oofem::CrossSection.

Definition at line 356 of file structuralcrosssection.h.

References OOFEM_ERROR.

Referenced by give3dBeamSubSoilStiffMtrx(), oofem::MITC4Shell::giveCharacteristicTensor(), giveGeneralizedStress_3dBeamSubSoil(), oofem::QPlaneStress2dSlip::giveHomogenizedFields(), oofem::QTrPlaneStress2dSlip::giveHomogenizedFields(), giveRealStresses(), oofem::QPlaneStress2dSlip::giveSensitivities(), and oofem::QTrPlaneStress2dSlip::giveSensitivities().

giveMaterialInterface()

virtual Interface * oofem::StructuralCrossSection::giveMaterialInterface ( InterfaceType t, IntegrationPoint * ip )

inlinevirtual

Reimplemented in oofem::SimpleCrossSection.

Definition at line 357 of file structuralcrosssection.h.

Referenced by oofem::GradientDamageElement::computeInternalForces_dB(), oofem::GradientDamageElement::computeInternalForces_dN(), oofem::GradientDamageElement::computeStiffnessMatrix_dd(), oofem::GradientDamageElement::computeStiffnessMatrix_du(), oofem::GradDpElement::computeStiffnessMatrix_kk(), oofem::GradDpElement::computeStiffnessMatrix_ku(), oofem::BaseMixedPressureElement::computeStiffnessMatrix_pp(), oofem::GradientDamageElement::computeStiffnessMatrix_ud(), oofem::GradDpElement::computeStiffnessMatrix_uk(), oofem::BaseMixedPressureElement::computeStiffnessMatrix_uu(), oofem::GradDpElement::computeStiffnessMatrix_uu(), oofem::GradientDamageElement::computeStiffnessMatrix_uu(), oofem::BaseMixedPressureElement::computeStressVector(), oofem::GradientDamageElement::computeStressVector_and_localDamageDrivingVariable(), oofem::GradDpElement::computeStressVectorAndLocalCumulatedStrain(), oofem::GradientDamageElement::giveInternalForcesVector_d(), oofem::BaseMixedPressureElement::giveInternalForcesVector_p(), and oofem::BaseMixedPressureElement::giveInternalForcesVector_u().

giveMembraneRotStiffMtrx()

virtual FloatMatrixF< 4, 4 > oofem::StructuralCrossSection::giveMembraneRotStiffMtrx ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Method for computing membrane stiffness matrix with added drilling stiffness.

Parameters

answer	Stiffness matrix.
mode	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).

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

giveRealStress_1d()

virtual FloatArrayF< 1 > oofem::StructuralCrossSection::giveRealStress_1d ( const FloatArrayF< 1 > & reducedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::QTruss1d::computeStressVector(), oofem::Truss1d::computeStressVector(), oofem::Truss2d::computeStressVector(), oofem::Truss3d::computeStressVector(), and giveRealStresses().

giveRealStress_3d()

virtual FloatArrayF< 6 > oofem::StructuralCrossSection::giveRealStress_3d ( const FloatArrayF< 6 > & reducedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::AxisymElement::computeStressVector(), oofem::Structural3DElement::computeStressVector(), oofem::tet21ghostsolid::computeStressVector(), and giveRealStresses().

giveRealStress_3dDegeneratedShell()

virtual FloatArrayF< 6 > oofem::StructuralCrossSection::giveRealStress_3dDegeneratedShell ( const FloatArrayF< 6 > & reducedStrain, GaussPoint * gp, TimeStep * tStep ) const

inlinevirtual

Reimplemented in oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Definition at line 102 of file structuralcrosssection.h.

References OOFEM_ERROR.

Referenced by oofem::MITC4Shell::computeStressVector().

giveRealStress_PlaneStrain()

virtual FloatArrayF< 4 > oofem::StructuralCrossSection::giveRealStress_PlaneStrain ( const FloatArrayF< 4 > & reducedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::PlaneStrainElement::computeStressVector(), and giveRealStresses().

giveRealStress_PlaneStress()

virtual FloatArrayF< 3 > oofem::StructuralCrossSection::giveRealStress_PlaneStress ( const FloatArrayF< 3 > & reducedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::PlaneStressElement::computeStressVector(), and giveRealStresses().

giveRealStress_Warping()

virtual FloatArrayF< 2 > oofem::StructuralCrossSection::giveRealStress_Warping ( const FloatArrayF< 2 > & reducedStrain, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by giveRealStresses().

giveRealStresses()

FloatArray oofem::StructuralCrossSection::giveRealStresses	(	const FloatArray &	reducedStrain,
		GaussPoint *	gp,
		TimeStep *	tStep ) const

Computes the real stress vector for given strain and integration point. 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. Elements should always pass their requests to their cross section model, which performs necessary integration over its volume and invokes necessary material services for corresponding material model defined for given integration point.

Parameters

answer	Contains result.
gp	Integration point.
reducedStrain	Strain vector in reduced form.
tStep	Current time step (most models are able to respond only when tStep is current time step).

Todo

this part only works for simple cross section and will be removed soon when new interface elements are done /JB

Definition at line 44 of file structuralcrosssection.C.

References giveGeneralizedStress_Beam2d(), giveGeneralizedStress_Beam3d(), giveGeneralizedStress_Plate(), giveGeneralizedStress_Shell(), giveGeneralizedStress_ShellRot(), giveMaterial(), oofem::GaussPoint::giveMaterialMode(), giveRealStress_1d(), giveRealStress_3d(), giveRealStress_PlaneStrain(), giveRealStress_PlaneStress(), giveRealStress_Warping(), and OOFEM_ERROR.

Referenced by oofem::SolidShell::giveInternalForcesVector().

giveStiffnessMatrix_1d()

virtual FloatMatrixF< 1, 1 > oofem::StructuralCrossSection::giveStiffnessMatrix_1d ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::QTruss1d::computeConstitutiveMatrixAt(), oofem::Truss1d::computeConstitutiveMatrixAt(), oofem::Truss2d::computeConstitutiveMatrixAt(), and oofem::Truss3d::computeConstitutiveMatrixAt().

giveStiffnessMatrix_3d()

virtual FloatMatrixF< 6, 6 > oofem::StructuralCrossSection::giveStiffnessMatrix_3d ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Method for computing the stiffness matrix.

Parameters

answer	Stiffness matrix.
mode	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).

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::AxisymElement::computeConstitutiveMatrixAt(), oofem::Structural3DElement::computeConstitutiveMatrixAt(), and oofem::tet21ghostsolid::computeConstitutiveMatrixAt().

giveStiffnessMatrix_dCde()

virtual void oofem::StructuralCrossSection::giveStiffnessMatrix_dCde ( FloatMatrix & answer, MatResponseMode mode, GaussPoint * gp, TimeStep * tStep )

pure virtual

Computes the material stiffness matrix dCde of receiver in a given integration point, respecting its history. The algorithm should use temporary or equilibrium history variables stored in integration point status to compute and return required result. Elements should always pass their requests to their cross section model, which performs necessary integration over its volume and invokes necessary material services for corresponding material model defined for given integration point.

Parameters

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

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::NLStructuralElement::computeStiffnessMatrix(), and oofem::NLStructuralElement::computeStiffnessMatrix_withIRulesAsSubcells().

giveStiffnessMatrix_dPdF_1d()

virtual FloatMatrixF< 1, 1 > oofem::StructuralCrossSection::giveStiffnessMatrix_dPdF_1d ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

References imposeStrainConstrainsOnGradient(), and imposeStressConstrainsOnGradient().

Referenced by oofem::QTruss1d::computeConstitutiveMatrix_dPdF_At(), oofem::Truss1d::computeConstitutiveMatrix_dPdF_At(), oofem::Truss2d::computeConstitutiveMatrix_dPdF_At(), and oofem::Truss3d::computeConstitutiveMatrix_dPdF_At().

giveStiffnessMatrix_dPdF_3d()

virtual FloatMatrixF< 9, 9 > oofem::StructuralCrossSection::giveStiffnessMatrix_dPdF_3d ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Computes the material stiffness matrix dPdF of receiver in a given integration point, respecting its history. The algorithm should use temporary or equilibrium history variables stored in integration point status to compute and return required result. Elements should always pass their requests to their cross section model, which performs necessary integration over its volume and invokes necessary material services for corresponding material model defined for given integration point.

Parameters

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

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::AxisymElement::computeConstitutiveMatrix_dPdF_At(), oofem::Structural3DElement::computeConstitutiveMatrix_dPdF_At(), and oofem::tet21ghostsolid::computeConstitutiveMatrix_dPdF_At().

giveStiffnessMatrix_dPdF_PlaneStrain()

virtual FloatMatrixF< 5, 5 > oofem::StructuralCrossSection::giveStiffnessMatrix_dPdF_PlaneStrain ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::PlaneStrainElement::computeConstitutiveMatrix_dPdF_At().

giveStiffnessMatrix_dPdF_PlaneStress()

virtual FloatMatrixF< 4, 4 > oofem::StructuralCrossSection::giveStiffnessMatrix_dPdF_PlaneStress ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::PlaneStressElement::computeConstitutiveMatrix_dPdF_At().

giveStiffnessMatrix_PlaneStrain()

virtual FloatMatrixF< 4, 4 > oofem::StructuralCrossSection::giveStiffnessMatrix_PlaneStrain ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::PlaneStrainElement::computeConstitutiveMatrixAt(), and oofem::XfemStructuralElementInterface::XfemElementInterface_computeConstitutiveMatrixAt().

giveStiffnessMatrix_PlaneStress()

virtual FloatMatrixF< 3, 3 > oofem::StructuralCrossSection::giveStiffnessMatrix_PlaneStress ( MatResponseMode mode, GaussPoint * gp, TimeStep * tStep ) const

pure virtual

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::PlaneStressElement::computeConstitutiveMatrixAt(), and oofem::XfemStructuralElementInterface::XfemElementInterface_computeConstitutiveMatrixAt().

imposeStrainConstrainsOnGradient()

FloatArray * oofem::StructuralCrossSection::imposeStrainConstrainsOnGradient ( GaussPoint * gp, FloatArray * gradientStressVector3d )

virtual

Returns modified gradient of strain vector, which is used to compute plastic strain increment. Imposes zeros on places, where zero strain occurs or energetically connected stress is prescribed to be zero.

See also

imposeStressConstrainsOnGradient

Parameters

gp	Integration point.
gradientStressVector3d	General 3d stress gradient.

Reimplemented in oofem::FiberedCrossSection, and oofem::LayeredCrossSection.

Definition at line 171 of file structuralcrosssection.C.

References oofem::FloatArray::at(), oofem::GaussPoint::giveMaterialMode(), oofem::FloatArray::giveSize(), and OOFEM_ERROR.

Referenced by oofem::PerfectlyPlasticMaterial::computePlasticStiffnessAt(), oofem::PerfectlyPlasticMaterial::giveRealStressVector(), giveStiffnessMatrix_dPdF_1d(), oofem::FiberedCrossSection::imposeStrainConstrainsOnGradient(), and oofem::LayeredCrossSection::imposeStrainConstrainsOnGradient().

imposeStressConstrainsOnGradient()

FloatArray * oofem::StructuralCrossSection::imposeStressConstrainsOnGradient ( GaussPoint * gp, FloatArray * gradientStressVector3d )

virtual

Returns modified gradient of stress vector, which is used to bring stresses back to yield surface. Method imposes zeros on places, where zero stress occurs. if energetically connected strain is zero, we do not impose zero there, because stress exist and must be taken into account when computing yield function. In such case a problem is assumed to be full 3d with some explicit strain equal to 0. On the other hand, if some stress is imposed to be zero, we understand such case as subspace of 3d case (like a classical plane stress problem, with no tracing of e_z, sigma_z)

Parameters

gp	Integration point.
gradientStressVector3d	General 3d stress gradient.

Reimplemented in oofem::FiberedCrossSection, and oofem::LayeredCrossSection.

Definition at line 103 of file structuralcrosssection.C.

References oofem::FloatArray::at(), oofem::GaussPoint::giveMaterialMode(), oofem::FloatArray::giveSize(), and OOFEM_ERROR.

Referenced by oofem::PerfectlyPlasticMaterial::computePlasticStiffnessAt(), oofem::PerfectlyPlasticMaterial::giveRealStressVector(), giveStiffnessMatrix_dPdF_1d(), oofem::PerfectlyPlasticMaterial::GiveStressCorrectionBackToYieldSurface(), oofem::FiberedCrossSection::imposeStressConstrainsOnGradient(), and oofem::LayeredCrossSection::imposeStressConstrainsOnGradient().

isCharacteristicMtrxSymmetric()

bool oofem::StructuralCrossSection::isCharacteristicMtrxSymmetric ( MatResponseMode rMode ) const

overridepure virtual

Check for symmetry of stiffness matrix. Default implementation returns true. It can be moved to base Cross section class in the future.

Parameters

rMode

Response mode of material.

Returns

True if stiffness matrix of receiver is symmetric.

Reimplemented from oofem::CrossSection.

Implemented in oofem::FiberedCrossSection, oofem::LayeredCrossSection, and oofem::SimpleCrossSection.

Referenced by oofem::NLStructuralElement::computeStiffnessMatrix(), oofem::StructuralElementEvaluator::computeStiffnessMatrix(), oofem::Truss3dnl2::computeStiffnessMatrix(), oofem::Truss3dnl::computeStiffnessMatrix(), oofem::PhaseFieldElement::computeStiffnessMatrix_uu(), and oofem::NLStructuralElement::computeStiffnessMatrix_withIRulesAsSubcells().

testCrossSectionExtension()

int oofem::StructuralCrossSection::testCrossSectionExtension ( CrossSectExtension ext )

inlineoverridevirtual

Returns nonzero, if receiver implements required extension.

Parameters

ext	Required extension.

Returns

Nonzero, if supported, zero otherwise.

Reimplemented from oofem::CrossSection.

Definition at line 353 of file structuralcrosssection.h.

References oofem::CS_StructuralCapability.

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

• structuralcrosssection.h
• structuralcrosssection.C