#include <truss2d.h>

Inheritance diagram for oofem::Truss2d:

Collaboration diagram for oofem::Truss2d:

Public Member Functions
	Truss2d (int n, Domain *d)
virtual	~Truss2d ()
void	computeLumpedMassMatrix (FloatMatrix &answer, TimeStep *tStep) override
void	computeMassMatrix (FloatMatrix &answer, TimeStep *tStep) override
int	giveLocalCoordinateSystem (FloatMatrix &answer) override
int	computeGlobalCoordinates (FloatArray &answer, const FloatArray &lcoords) override
int	computeNumberOfDofs () override
void	giveDofManDofIDMask (int inode, IntArray &answer) const override
void	computeStressVector (FloatArray &answer, const FloatArray &strain, GaussPoint gp, TimeStep tStep) override
void	computeConstitutiveMatrixAt (FloatMatrix &answer, MatResponseMode rMode, GaussPoint gp, TimeStep tStep) override
void	computeConstitutiveMatrix_dPdF_At (FloatMatrix &answer, MatResponseMode rMode, GaussPoint gp, TimeStep tStep) override
double	giveCharacteristicLength (const FloatArray &) override
double	computeVolumeAround (GaussPoint *gp) override
int	testElementExtension (ElementExtension ext) override
void	drawRawGeometry (oofegGraphicContext &gc, TimeStep *tStep) override
void	drawDeformedGeometry (oofegGraphicContext &gc, TimeStep *tStep, UnknownType) override
const char *	giveInputRecordName () const override
const char *	giveClassName () const override
void	initializeFrom (InputRecord &ir, int priority) override
void	postInitialize () override
	Performs post initialization steps.
Element_Geometry_Type	giveGeometryType () const override
integrationDomain	giveIntegrationDomain () const override
MaterialMode	giveMaterialMode () override
FEInterpolation *	giveInterpolation () const override
Public Member Functions inherited from oofem::NLStructuralElement
	NLStructuralElement (int n, Domain *d)
virtual	~NLStructuralElement ()
	Destructor.
int	giveGeometryMode ()
void	computeFirstPKStressVector (FloatArray &answer, GaussPoint gp, TimeStep tStep)
void	computeCauchyStressVector (FloatArray &answer, GaussPoint gp, TimeStep tStep)
void	computeStiffnessMatrix (FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep) override
void	computeInitialStressMatrix (FloatMatrix &answer, TimeStep *tStep) override
void	computeStiffnessMatrix_withIRulesAsSubcells (FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep)
void	giveInternalForcesVector (FloatArray &answer, TimeStep *tStep, int useUpdatedGpRecord=0) override
void	giveInternalForcesVector_withIRulesAsSubcells (FloatArray &answer, TimeStep *tStep, int useUpdatedGpRecord=0) override
virtual void	computeDeformationGradientVector (FloatArray &answer, GaussPoint gp, TimeStep tStep)
double	computeCurrentVolume (TimeStep *tStep)
void	giveInputRecord (DynamicInputRecord &input) override
Public Member Functions inherited from oofem::StructuralElement
	StructuralElement (int n, Domain *d)
virtual	~StructuralElement ()
	Destructor.
void	giveCharacteristicMatrix (FloatMatrix &answer, CharType, TimeStep *tStep) override
void	giveCharacteristicVector (FloatArray &answer, CharType type, ValueModeType mode, TimeStep *tStep) override
virtual void	computeConsistentMassMatrix (FloatMatrix &answer, TimeStep tStep, double &mass, const double ipDensity=NULL)
virtual void	giveMassMtrxIntegrationgMask (IntArray &answer)
void	computeStiffnessMatrix_withIRulesAsSubcells (FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep)
virtual void	computeLumpedInitialStressMatrix (FloatMatrix &answer, TimeStep *tStep)
void	computeField (ValueModeType mode, TimeStep *tStep, const FloatArray &lcoords, FloatArray &answer) override
virtual void	computeStrainVector (FloatArray &answer, GaussPoint gp, TimeStep tStep)
int	giveIPValue (FloatArray &answer, GaussPoint gp, InternalStateType type, TimeStep tStep) override
virtual void	computeResultingIPTemperatureAt (FloatArray &answer, TimeStep tStep, GaussPoint gp, ValueModeType mode)
virtual void	computeResultingIPEigenstrainAt (FloatArray &answer, TimeStep tStep, GaussPoint gp, ValueModeType mode)
void	updateBeforeNonlocalAverage (TimeStep *tStep) override
virtual void	giveNonlocalLocationArray (IntArray &locationArray, const UnknownNumberingScheme &us)
virtual void	addNonlocalStiffnessContributions (SparseMtrx &dest, const UnknownNumberingScheme &s, TimeStep *tStep)
int	adaptiveUpdate (TimeStep *tStep) override
void	updateInternalState (TimeStep *tStep) override
void	updateYourself (TimeStep *tStep) override
int	checkConsistency () override
void	giveInputRecord (DynamicInputRecord &input) override
int	giveInternalStateAtNode (FloatArray &answer, InternalStateType type, InternalStateMode mode, int node, TimeStep *tStep) override
void	showSparseMtrxStructure (CharType mtrx, oofegGraphicContext &gc, TimeStep *tStep) override
	Shows sparse structure.
void	showExtendedSparseMtrxStructure (CharType mtrx, oofegGraphicContext &gc, TimeStep *tStep) override
	Shows extended sparse structure (for example, due to nonlocal interactions for tangent stiffness).
void	computeLoadVector (FloatArray &answer, BodyLoad load, CharType type, ValueModeType mode, TimeStep tStep) override
void	computeBoundarySurfaceLoadVector (FloatArray &answer, BoundaryLoad load, int boundary, CharType type, ValueModeType mode, TimeStep tStep, bool global=true) override
void	computeBoundaryEdgeLoadVector (FloatArray &answer, BoundaryLoad load, int boundary, CharType type, ValueModeType mode, TimeStep tStep, bool global=true) override
virtual void	computeEdgeNMatrix (FloatMatrix &answer, int boundaryID, const FloatArray &lcoords)
	computes edge interpolation matrix
virtual void	computeSurfaceNMatrix (FloatMatrix &answer, int boundaryID, const FloatArray &lcoords)
StructuralCrossSection *	giveStructuralCrossSection ()
	Helper function which returns the structural cross-section for the element.
virtual void	createMaterialStatus ()
Public Member Functions inherited from oofem::Element
	Element (int n, Domain *aDomain)
	Element (const Element &src)=delete
Element &	operator= (const Element &src)=delete
virtual	~Element ()
	Virtual destructor.
void	giveLocationArray (IntArray &locationArray, const UnknownNumberingScheme &s, IntArray *dofIds=NULL) const
void	giveLocationArray (IntArray &locationArray, const IntArray &dofIDMask, const UnknownNumberingScheme &s, IntArray *dofIds=NULL) const
virtual void	giveBoundaryLocationArray (IntArray &locationArray, const IntArray &bNodes, const UnknownNumberingScheme &s, IntArray *dofIds=NULL)
virtual void	giveBoundaryLocationArray (IntArray &locationArray, const IntArray &bNodes, const IntArray &dofIDMask, const UnknownNumberingScheme &s, IntArray *dofIds=NULL)
virtual int	giveNumberOfDofs ()
virtual int	giveNumberOfInternalDofManagers () const
virtual DofManager *	giveInternalDofManager (int i) const
virtual void	setInternalDofManager (int num, std::unique_ptr< DofManager > dm)
virtual double	giveCharacteristicValue (CharType type, TimeStep *tStep)
virtual void	computeTangentFromSurfaceLoad (FloatMatrix &answer, BoundaryLoad load, int boundary, MatResponseMode rmode, TimeStep tStep)
virtual void	computeTangentFromEdgeLoad (FloatMatrix &answer, BoundaryLoad load, int boundary, MatResponseMode rmode, TimeStep tStep)
const IntArray &	giveBodyLoadList () const
const IntArray &	giveBoundaryLoadList () const
void	computeVectorOf (ValueModeType u, TimeStep *tStep, FloatArray &answer)
void	computeVectorOf (const IntArray &dofIDMask, ValueModeType u, TimeStep *tStep, FloatArray &answer, bool padding=false)
void	computeBoundaryVectorOf (const IntArray &bNodes, const IntArray &dofIDMask, ValueModeType u, TimeStep *tStep, FloatArray &answer, bool padding=false)
void	computeVectorOf (PrimaryField &field, const IntArray &dofIDMask, ValueModeType u, TimeStep *tStep, FloatArray &answer, bool padding=false)
void	computeVectorOfPrescribed (ValueModeType u, TimeStep *tStep, FloatArray &answer)
void	computeVectorOfPrescribed (const IntArray &dofIDMask, ValueModeType type, TimeStep *tStep, FloatArray &answer)
virtual int	computeNumberOfGlobalDofs ()
int	computeNumberOfPrimaryMasterDofs ()
virtual bool	computeGtoLRotationMatrix (FloatMatrix &answer)
virtual bool	giveRotationMatrix (FloatMatrix &answer)
virtual bool	computeDofTransformationMatrix (FloatMatrix &answer, const IntArray &nodes, bool includeInternal)
virtual void	giveInternalDofManDofIDMask (int inode, IntArray &answer) const
virtual void	giveElementDofIDMask (IntArray &answer) const
virtual double	computeVolumeAreaOrLength ()
	Computes the volume, area or length of the element depending on its spatial dimension.
double	computeMeanSize ()
virtual double	computeVolume ()
virtual double	computeArea ()
virtual IntArray	giveBoundaryEdgeNodes (int boundary, bool includeHierarchical=false) const
virtual IntArray	giveBoundarySurfaceNodes (int boundary, bool includeHierarchical=false) const
virtual IntArray	giveBoundaryNodes (int boundary) const
virtual std::unique_ptr< IntegrationRule >	giveBoundaryEdgeIntegrationRule (int order, int boundary)
virtual std::unique_ptr< IntegrationRule >	giveBoundarySurfaceIntegrationRule (int order, int boundary)
int	giveDofManagerNumber (int i) const
const IntArray &	giveDofManArray () const
void	addDofManager (DofManager *dMan)
DofManager *	giveDofManager (int i) const
Node *	giveNode (int i) const
virtual ElementSide *	giveSide (int i) const
virtual FEInterpolation *	giveInterpolation (DofIDItem id) const
virtual const FEInterpolation *	getGeometryInterpolation () const
virtual Material *	giveMaterial ()
int	giveMaterialNumber () const
CrossSection *	giveCrossSection ()
int	getActivityTimeFunctionNumber ()
void	setActivityTimeFunctionNumber (int funcIndx)
void	setMaterial (int matIndx)
virtual void	setCrossSection (int csIndx)
virtual int	giveNumberOfDofManagers () const
void	setNumberOfDofManagers (int i)
	Sets number of element dof managers.
virtual int	giveNumberOfNodes () const
void	setDofManagers (const IntArray &dmans)
void	setDofManager (int id, int dm)
void	setBodyLoads (const IntArray &bodyLoads)
void	setIntegrationRules (std ::vector< std ::unique_ptr< IntegrationRule > > irlist)
virtual int	giveIntegrationRuleLocalCodeNumbers (IntArray &answer, IntegrationRule &ie)
int	giveRegionNumber ()
virtual void	initializeYourself (TimeStep *timeStepWhenICApply)
virtual bool	isActivated (TimeStep *tStep)
virtual bool	isCast (TimeStep *tStep)
virtual void	initForNewStep ()
virtual Element_Geometry_Type	giveEdgeGeometryType (int id) const
	Returns the receiver edge geometry type.
virtual Element_Geometry_Type	giveSurfaceGeometryType (int id) const
	Returns the receiver surface geometry type.
virtual int	giveSpatialDimension ()
virtual int	giveNumberOfBoundarySides ()
	Returns number of boundaries (entities of element_dimension-1: points, edges, surfaces).
virtual int	giveNumberOfEdges () const
virtual int	giveNumberOfSurfaces () const
virtual int	giveDefaultIntegrationRule () const
virtual IntegrationRule *	giveDefaultIntegrationRulePtr ()
int	giveNumberOfIntegrationRules ()
virtual IntegrationRule *	giveIntegrationRule (int i)
std::vector< std ::unique_ptr< IntegrationRule > > &	giveIntegrationRulesArray ()
int	giveGlobalIPValue (FloatArray &answer, GaussPoint gp, InternalStateType type, TimeStep tStep)
virtual double	giveLengthInDir (const FloatArray &normalToCrackPlane)
double	giveCharacteristicLengthForPlaneElements (const FloatArray &normalToCrackPlane)
double	giveCharacteristicLengthForAxisymmElements (const FloatArray &normalToCrackPlane)
virtual double	giveCharacteristicSize (GaussPoint *gp, FloatArray &normalToCrackPlane, ElementCharSizeMethod method)
virtual double	giveParentElSize () const
virtual bool	computeLocalCoordinates (FloatArray &answer, const FloatArray &gcoords)
virtual void	giveLocalCoordinateSystemVector (InternalStateType isttype, FloatArray &answer)
virtual void	computeMidPlaneNormal (FloatArray &answer, const GaussPoint *gp)
virtual int	adaptiveMap (Domain oldd, TimeStep tStep)
virtual int	mapStateVariables (Domain &iOldDom, const TimeStep &iTStep)
virtual int	adaptiveFinish (TimeStep *tStep)
void	updateLocalNumbering (EntityRenumberingFunctor &f) override
template<class T>
void	ipEvaluator (T src, void(T ::f)(GaussPoint *gp))
	Integration point evaluator, loops over receiver IP's and calls given function (passed as f parameter) on them. The IP is parameter to function f.
template<class T, class S>
void	ipEvaluator (T src, void(T ::f)(GaussPoint *, S &), S &_val)
	Integration point evaluator, loops over receiver IP's and calls given function (passed as f parameter) on them. The IP is parameter to function f as well as additional array.
virtual void	drawYourself (oofegGraphicContext &gc, TimeStep *tStep)
virtual void	drawAnnotation (oofegGraphicContext &gc, TimeStep *tStep)
virtual void	drawScalar (oofegGraphicContext &gc, TimeStep *tStep)
virtual void	drawSpecial (oofegGraphicContext &gc, TimeStep *tStep)
virtual void	giveLocalIntVarMaxMin (oofegGraphicContext &gc, TimeStep *tStep, double &emin, double &emax)
virtual int	giveInternalStateAtSide (FloatArray &answer, InternalStateType type, InternalStateMode mode, int side, TimeStep *tStep)
int	giveLabel () const
int	giveGlobalNumber () const
void	setGlobalNumber (int num)
elementParallelMode	giveParallelMode () const
void	setParallelMode (elementParallelMode _mode)
	Sets parallel mode of element.
virtual elementParallelMode	giveKnotSpanParallelMode (int) const
int	packUnknowns (DataStream &buff, TimeStep *tStep)
int	unpackAndUpdateUnknowns (DataStream &buff, TimeStep *tStep)
int	estimatePackSize (DataStream &buff)
const IntArray *	givePartitionList () const
void	setPartitionList (IntArray &pl)
virtual double	predictRelativeComputationalCost ()
virtual double	giveRelativeSelfComputationalCost ()
virtual double	predictRelativeRedistributionCost ()
IntArray *	giveBodyLoadArray ()
	Returns array containing load numbers of loads acting on element.
IntArray *	giveBoundaryLoadArray ()
	Returns array containing load numbers of boundary loads acting on element.
void	initializeFinish () override
void	saveContext (DataStream &stream, ContextMode mode) override
void	restoreContext (DataStream &stream, ContextMode mode) override
void	printOutputAt (FILE file, TimeStep tStep) override
virtual const IntArray	giveLocation ()
virtual void	recalculateCoordinates (int nodeNumber, FloatArray &coords)
void	setSharedEdgeID (int iedge, int globalID)
void	setSharedSurfaceID (int isurf, int globalID)
const IntArray *	giveSharedEdgeIDs () const
const IntArray *	giveSharedSurfaceIDs () const
Public Member Functions inherited from oofem::FEMComponent
	FEMComponent (int n, Domain *d)
virtual	~FEMComponent ()=default
	Virtual destructor.
Domain *	giveDomain () const
virtual void	setDomain (Domain *d)
int	giveNumber () const
void	setNumber (int num)
virtual void	initializeFrom (InputRecord &ir)
virtual void	printYourself ()
	Prints receiver state on stdout. Useful for debugging.
virtual Interface *	giveInterface (InterfaceType t)
std::string	errorInfo (const char *func) const
	Returns string for prepending output (used by error reporting macros).

Protected Member Functions
void	resolveCoordIndices (int &c1, int &c2)
void	giveEdgeDofMapping (IntArray &answer, int) const override
double	computeEdgeVolumeAround (GaussPoint *gp, int) override
int	computeLoadLEToLRotationMatrix (FloatMatrix &, int, GaussPoint *gp) override
void	computeBmatrixAt (GaussPoint *gp, FloatMatrix &, int=1, int=ALL_STRAINS) override
void	computeBHmatrixAt (GaussPoint *gp, FloatMatrix &) override
void	computeNmatrixAt (const FloatArray &iLocCoord, FloatMatrix &) override
void	computeGaussPoints () override
double	computeLength () override
double	givePitch ()
Protected Member Functions inherited from oofem::NLStructuralElement
int	checkConsistency () override
virtual void	computePointLoadVectorAt (FloatArray &answer, Load load, TimeStep tStep, ValueModeType mode, bool global=true)
virtual void	giveSurfaceDofMapping (IntArray &answer, int iSurf) const
virtual double	computeSurfaceVolumeAround (GaussPoint *gp, int iSurf)
virtual int	computeLoadGToLRotationMtrx (FloatMatrix &answer)
virtual int	computeLoadLSToLRotationMatrix (FloatMatrix &answer, int iSurf, GaussPoint *gp)
virtual int	giveNumberOfIPForMassMtrxIntegration ()
void	condense (FloatMatrix stiff, FloatMatrix mass, FloatArray load, IntArray what)
virtual void	setupIRForMassMtrxIntegration (IntegrationRule &iRule)
virtual void	computeBodyLoadVectorAt (FloatArray &answer, Load load, TimeStep tStep, ValueModeType mode)

Protected Attributes
double	length
double	pitch
int	cs_mode
Protected Attributes inherited from oofem::NLStructuralElement
int	nlGeometry =0
	Flag indicating if geometrical nonlinearities apply.
Protected Attributes inherited from oofem::StructuralElement
std::unique_ptr< FloatArray >	initialDisplacements
	Initial displacement vector, describes the initial nodal displacements when element has been casted.
Protected Attributes inherited from oofem::Element
int	numberOfDofMans
	Number of dofmanagers.
IntArray	dofManArray
	Array containing dofmanager numbers.
int	material
	Number of associated material.
int	crossSection
	Number of associated cross section.
IntArray	bodyLoadArray
IntArray	boundaryLoadArray
std::vector< std ::unique_ptr< IntegrationRule > >	integrationRulesArray
FloatMatrix	elemLocalCS
	Transformation material matrix, used in orthotropic and anisotropic materials, global->local transformation.
int	activityTimeFunction
	Element activity time function. If defined, nonzero value indicates active receiver, zero value inactive element.
int	globalNumber
int	numberOfGaussPoints
elementParallelMode	parallel_mode
	Determines the parallel mode of the element.
IntArray	partitions
IntArray	globalEdgeIDs
IntArray	globalSurfaceIDs
Protected Attributes inherited from oofem::FEMComponent
int	number
	Component number.
Domain *	domain
	Link to domain object, useful for communicating with other FEM components.

Static Protected Attributes
static FEI2dLineLin	interp [3]
static ParamKey	IPK_Truss2d_cs
Static Protected Attributes inherited from oofem::NLStructuralElement
static ParamKey	IPK_NLStructuralElement_nlgeoflag

Additional Inherited Members
Static Public Attributes inherited from oofem::Element
static ParamKey	IPK_Element_mat
static ParamKey	IPK_Element_crosssect
static ParamKey	IPK_Element_nodes
static ParamKey	IPK_Element_bodyload
static ParamKey	IPK_Element_boundaryload
static ParamKey	IPK_Element_lcs
static ParamKey	IPK_Element_partitions
static ParamKey	IPK_Element_remote
static ParamKey	IPK_Element_activityTimeFunction
static ParamKey	IPK_Element_nip

Detailed Description

This class implements a two-node truss bar element for two-dimensional analysis.

A truss bar element is characterized by its 'length' and its 'pitch'. The pitch is the angle in radians between the X-axis and the axis of the element (oriented node1 to node2).

Can be used in xy, xz or yz planes.

Author: Peter Grassl

Definition at line 60 of file truss2d.h.

Constructor & Destructor Documentation

◆ Truss2d()

oofem::Truss2d::Truss2d	(	int	n,
		Domain *	d )

Definition at line 63 of file truss2d.C.

References cs_mode, length, oofem::NLStructuralElement::NLStructuralElement(), oofem::Element::numberOfDofMans, and pitch.

◆ ~Truss2d()

virtual oofem::Truss2d::~Truss2d ( )

inlinevirtual

Definition at line 72 of file truss2d.h.

Member Function Documentation

◆ computeBHmatrixAt()

void oofem::Truss2d::computeBHmatrixAt	(	GaussPoint *	gp,
		FloatMatrix &	answer )

overrideprotectedvirtual

Computes a matrix which, multiplied by the column matrix of nodal displacements, gives the displacement gradient stored by columns. The components of this matrix are derivatives of the shape functions, but they are arranged in a somewhat different way from the usual B matrix.

Parameters

gp	Integration point.
answer	BF matrix at this point.

Reimplemented from oofem::NLStructuralElement.

Definition at line 107 of file truss2d.C.

References computeBmatrixAt().

◆ computeBmatrixAt()

void oofem::Truss2d::computeBmatrixAt	(	GaussPoint *	gp,
		FloatMatrix &	answer,
		int	lowerIndx = 1,
		int	upperIndx = ALL_STRAINS )

overrideprotectedvirtual

Computes the geometrical matrix of receiver in given integration point. The product of this matrix (assembled at given integration point) and element displacement vector is element strain vector. If lowerIndx and upperIndx parameters are specified, answer is formed only for strains within this interval. This will affects the size of answer.

Parameters

gp	Integration point for which answer is computed.
answer	Geometric matrix of receiver.
lowerIndx	If specified, answer is formed only for strain with index equal and greater than lowerIndx. This parameter has default value 1 (answer is formed from first strain).
upperIndx	If specified, answer is formed only for strain with index less and equal than upperIndx. This parameter has default value ALL_STRAINS (answer is formed for all strains).

Implements oofem::StructuralElement.

Definition at line 74 of file truss2d.C.

References oofem::FloatMatrix::at(), computeLength(), oofem::DofManager::giveCoordinate(), oofem::Element::giveNode(), oofem::FloatMatrix::resize(), resolveCoordIndices(), and oofem::FloatMatrix::times().

Referenced by computeBHmatrixAt().

◆ computeConstitutiveMatrix_dPdF_At()

void oofem::Truss2d::computeConstitutiveMatrix_dPdF_At	(	FloatMatrix &	answer,
		MatResponseMode	rMode,
		GaussPoint *	gp,
		TimeStep *	tStep )

overridevirtual

Computes large strain constitutive matrix of receiver. Default implementation uses element cross section giveCharMaterialStiffnessMatrix service.

Parameters

answer	Constitutive matrix.
rMode	Material response mode of answer.
gp	Integration point for which constitutive matrix is computed.
tStep	Time step.

Implements oofem::NLStructuralElement.

Definition at line 333 of file truss2d.C.

References oofem::StructuralCrossSection::giveStiffnessMatrix_dPdF_1d(), and oofem::StructuralElement::giveStructuralCrossSection().

◆ computeConstitutiveMatrixAt()

void oofem::Truss2d::computeConstitutiveMatrixAt	(	FloatMatrix &	answer,
		MatResponseMode	rMode,
		GaussPoint *	gp,
		TimeStep *	tStep )

overridevirtual

Computes constitutive matrix of receiver. Default implementation uses element cross section giveCharMaterialStiffnessMatrix service.

Parameters

answer	Constitutive matrix.
rMode	Material response mode of answer.
gp	Integration point for which constitutive matrix is computed.
tStep	Time step.

Implements oofem::StructuralElement.

Definition at line 326 of file truss2d.C.

References oofem::StructuralCrossSection::giveStiffnessMatrix_1d(), and oofem::StructuralElement::giveStructuralCrossSection().

◆ computeEdgeVolumeAround()

double oofem::Truss2d::computeEdgeVolumeAround	(	GaussPoint *	gp,
		int	iEdge )

overrideprotectedvirtual

Computes volume related to integration point on local edge.

Parameters

gp	edge integration point
iEdge	edge number

Reimplemented from oofem::StructuralElement.

Definition at line 360 of file truss2d.C.

References computeLength(), oofem::GaussPoint::giveWeight(), and OOFEM_ERROR.

◆ computeGaussPoints()

void oofem::Truss2d::computeGaussPoints ( )

overrideprotectedvirtual

Initializes the array of integration rules member variable. Element can have multiple integration rules for different tasks. For example structural element family class uses this feature to implement transparent support for reduced and selective integration of some strain components. Must be defined by terminator classes.

See also: IntegrationRule

Reimplemented from oofem::Element.

Definition at line 115 of file truss2d.C.

References oofem::Element::giveCrossSection(), oofem::Element::integrationRulesArray, and oofem::CrossSection::setupIntegrationPoints().

◆ computeGlobalCoordinates()

int oofem::Truss2d::computeGlobalCoordinates	(	FloatArray &	answer,
		const FloatArray &	lcoords )

overridevirtual

Computes the global coordinates from given element's local coordinates.

Parameters

answer	Requested global coordinates.
lcoords	Local coordinates.

Returns: Nonzero if successful, zero otherwise.

Reimplemented from oofem::Element.

Definition at line 168 of file truss2d.C.

References oofem::FloatArray::at(), oofem::DofManager::giveCoordinate(), oofem::Element::giveNode(), oofem::FloatArray::resize(), resolveCoordIndices(), and oofem::FloatArray::zero().

◆ computeLength()

double oofem::Truss2d::computeLength ( )

overrideprotectedvirtual

Computes the length (zero for all but 1D geometries)

Returns: Element length.

Reimplemented from oofem::Element.

Definition at line 198 of file truss2d.C.

References oofem::DofManager::giveCoordinate(), oofem::Element::giveNode(), length, and resolveCoordIndices().

Referenced by computeBmatrixAt(), computeEdgeVolumeAround(), computeLumpedMassMatrix(), computeVolumeAround(), and giveCharacteristicLength().

◆ computeLoadLEToLRotationMatrix()

int oofem::Truss2d::computeLoadLEToLRotationMatrix	(	FloatMatrix &	answer,
		int	iEdge,
		GaussPoint *	gp )

overrideprotectedvirtual

Returns transformation matrix from local edge c.s to element local coordinate system of load vector components. Necessary, because integration must be done in local coordinate system of entity (edge or surface). If no transformation is necessary, answer is empty matrix (default);

Parameters

answer	Computed rotation matrix.
iEdge	Edge number.
gp	Integration point (point, where transformation is computed, useful for curved edges).

Returns: Nonzero if transformation matrix is not empty matrix, zero otherwise.

Reimplemented from oofem::StructuralElement.

Definition at line 371 of file truss2d.C.

References oofem::FloatMatrix::at(), givePitch(), pitch, oofem::FloatMatrix::resize(), and oofem::FloatMatrix::zero().

◆ computeLumpedMassMatrix()

void oofem::Truss2d::computeLumpedMassMatrix	(	FloatMatrix &	answer,
		TimeStep *	tStep )

overridevirtual

Computes lumped mass matrix of receiver. Default implementation returns lumped consistent mass matrix. Then returns lumped mass transformed into nodal coordinate system. The lumping procedure zeroes all off-diagonal members and zeroes also all diagonal members corresponding to non-displacement DOFs. Such diagonal matrix is then rescaled, to preserve the element mass. Requires the computeNmatrixAt and giveMassMtrxIntegrationgMask services to be implemented.

Parameters

answer	Lumped mass matrix.
tStep	Time step.

Reimplemented from oofem::StructuralElement.

Definition at line 127 of file truss2d.C.

References oofem::FloatMatrix::at(), computeLength(), oofem::CS_Area, oofem::CrossSection::give(), oofem::Element::giveCrossSection(), oofem::StructuralElement::giveStructuralCrossSection(), oofem::Element::integrationRulesArray, oofem::Element::isActivated(), oofem::FloatMatrix::resize(), and oofem::FloatMatrix::zero().

Referenced by computeMassMatrix().

◆ computeMassMatrix()

void oofem::Truss2d::computeMassMatrix	(	FloatMatrix &	answer,
		TimeStep *	tStep )

inlineoverridevirtual

Computes mass matrix of receiver. Default implementation returns consistent mass matrix and uses numerical integration. Returns result of this->computeConsistentMassMatrix service, transformed into nodal coordinate system. Requires the computeNmatrixAt and giveMassMtrxIntegrationgMask services to be implemented.

Parameters

answer	Mass matrix.
tStep	Time step.

Reimplemented from oofem::StructuralElement.

Definition at line 75 of file truss2d.h.

References computeLumpedMassMatrix().

◆ computeNmatrixAt()

void oofem::Truss2d::computeNmatrixAt	(	const FloatArray &	iLocCoord,
		FloatMatrix &	answer )

overrideprotectedvirtual

Computes interpolation matrix for element unknowns. The order and meaning of unknowns is element dependent.

Parameters

iLocCoord	Local coordinates.
answer	Interpolation matrix evaluated at gp.

Reimplemented from oofem::StructuralElement.

Definition at line 148 of file truss2d.C.

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

◆ computeNumberOfDofs()

int oofem::Truss2d::computeNumberOfDofs ( )

inlineoverridevirtual

Computes or simply returns total number of element's local DOFs. Must be defined by particular element.

Returns: Number of local DOFs of element.

Reimplemented from oofem::Element.

Definition at line 81 of file truss2d.h.

◆ computeStressVector()

void oofem::Truss2d::computeStressVector	(	FloatArray &	answer,
		const FloatArray &	strain,
		GaussPoint *	gp,
		TimeStep *	tStep )

overridevirtual

Computes the stress vector of receiver at given integration point, at time step tStep. The nature of these stresses depends on the element's type.

Parameters

answer	Stress vector.
strain	Strain vector.
gp	Integration point.
tStep	Time step.

Implements oofem::StructuralElement.

Definition at line 319 of file truss2d.C.

References oofem::StructuralCrossSection::giveRealStress_1d(), and oofem::StructuralElement::giveStructuralCrossSection().

◆ computeVolumeAround()

double oofem::Truss2d::computeVolumeAround ( GaussPoint * gp )

overridevirtual

Returns volume related to given integration point. Used typically in subroutines, that perform integration over element volume. Should be implemented by particular elements.

See also: GaussPoint

Parameters

gp	Integration point for which volume is computed.

Returns: Volume for integration point.

Reimplemented from oofem::Element.

Definition at line 189 of file truss2d.C.

References computeLength(), oofem::CS_Area, oofem::CrossSection::give(), oofem::Element::giveCrossSection(), and oofem::GaussPoint::giveWeight().

◆ drawDeformedGeometry()

void oofem::Truss2d::drawDeformedGeometry	(	oofegGraphicContext &	gc,
		TimeStep *	tStep,
		UnknownType	type )

overridevirtual

Reimplemented from oofem::Element.

Definition at line 451 of file truss2d.C.

References gc, oofem::Element::giveNode(), oofem::Node::giveUpdatedCoordinate(), OOFEG_DEFORMED_GEOMETRY_LAYER, OOFEG_DEFORMED_GEOMETRY_WIDTH, and resolveCoordIndices().

◆ drawRawGeometry()

void oofem::Truss2d::drawRawGeometry	(	oofegGraphicContext &	gc,
		TimeStep *	tStep )

overridevirtual

Reimplemented from oofem::Element.

Definition at line 406 of file truss2d.C.

References cs_mode, gc, oofem::DofManager::giveCoordinate(), oofem::Element::giveNode(), OOFEG_RAW_GEOMETRY_LAYER, OOFEG_RAW_GEOMETRY_WIDTH, and resolveCoordIndices().

◆ giveCharacteristicLength()

double oofem::Truss2d::giveCharacteristicLength ( const FloatArray & normalToCrackPlane )

inlineoverridevirtual

Returns the size of element in the given direction, in some cases adjusted (e.g. if the direction is perpendicular to a planar element). Required by material models relying on the crack-band approach to achieve objectivity with respect to the mesh size.

Parameters

normalToCrackPlane Normal to the expected crack band.

Returns: Element size corresponding to the given direction (expected width of the crack band).

Reimplemented from oofem::Element.

Definition at line 89 of file truss2d.h.

References computeLength().

◆ giveClassName()

const char * oofem::Truss2d::giveClassName ( ) const

inlineoverridevirtual

Returns: Class name of the receiver.

Reimplemented from oofem::NLStructuralElement.

Definition at line 103 of file truss2d.h.

◆ giveDofManDofIDMask()

void oofem::Truss2d::giveDofManDofIDMask	(	int	inode,
		IntArray &	answer ) const

overridevirtual

Returns dofmanager dof mask for node. This mask defines the dofs which are used by element in node. Mask influences the code number ordering for particular node. Code numbers are ordered according to node order and dofs belonging to particular node are ordered according to this mask. If element requests dofs using node mask which are not in node then error is generated. This masking allows node to be shared by different elements with different dofs in same node. Elements local code numbers are extracted from node using this mask. Must be defined by particular element.

Parameters

inode	Mask is computed for local dofmanager with inode number.
answer	Mask for node.

Reimplemented from oofem::Element.

Definition at line 306 of file truss2d.C.

References cs_mode.

◆ giveEdgeDofMapping()

void oofem::Truss2d::giveEdgeDofMapping	(	IntArray &	answer,
		int	iEdge ) const

overrideprotectedvirtual

Assembles edge dof mapping mask, which provides mapping between edge local DOFs and "global" element DOFs. Mask can be imagined as local edge code numbers used to localize local edge DOFs to element DOFs.

Parameters

answer	Edge DOF mapping.
iEdge	Edge number.

Reimplemented from oofem::StructuralElement.

Definition at line 340 of file truss2d.C.

References oofem::IntArray::at(), OOFEM_ERROR, and oofem::IntArray::resize().

◆ giveGeometryType()

Element_Geometry_Type oofem::Truss2d::giveGeometryType ( ) const

inlineoverridevirtual

Todo: Introduce interpolator and remove these:

Implements oofem::Element.

Definition at line 107 of file truss2d.h.

◆ giveInputRecordName()

const char * oofem::Truss2d::giveInputRecordName ( ) const

inlineoverridevirtual

Returns: Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 102 of file truss2d.h.

References _IFT_Truss2d_Name.

◆ giveIntegrationDomain()

integrationDomain oofem::Truss2d::giveIntegrationDomain ( ) const

inlineoverridevirtual

Returns integration domain for receiver, used to initialize integration point over receiver volume. Default behavior is taken from the default interpolation.

Returns: Integration domain of element.

Reimplemented from oofem::Element.

Definition at line 108 of file truss2d.h.

References oofem::_Line.

◆ giveInterpolation()

FEInterpolation * oofem::Truss2d::giveInterpolation ( ) const

overridevirtual

Returns: Interpolation of the element geometry, or NULL if none exist.

Reimplemented from oofem::Element.

Definition at line 398 of file truss2d.C.

References cs_mode, and interp.

◆ giveLocalCoordinateSystem()

int oofem::Truss2d::giveLocalCoordinateSystem ( FloatMatrix & answer )

overridevirtual

Returns local coordinate system of receiver Required by material models with ortho- and anisotrophy. Returns a unit vectors of local coordinate system at element stored row-wise. If local system is equal to global one, set answer to empty matrix and return zero value.

Returns: nonzero if answer computed, zero value if answer is empty, i.e. no transformation is necessary.

Reimplemented from oofem::Element.

Definition at line 244 of file truss2d.C.

References oofem::FloatMatrix::at(), givePitch(), pitch, oofem::FloatMatrix::resize(), and oofem::FloatMatrix::zero().

◆ giveMaterialMode()

MaterialMode oofem::Truss2d::giveMaterialMode ( )

inlineoverridevirtual

Returns material mode for receiver integration points. Should be specialized.

Returns: Material mode of element.

Reimplemented from oofem::Element.

Definition at line 109 of file truss2d.h.

◆ givePitch()

double oofem::Truss2d::givePitch ( )

protected

Definition at line 220 of file truss2d.C.

References oofem::DofManager::giveCoordinate(), oofem::Element::giveNode(), pitch, and resolveCoordIndices().

Referenced by computeLoadLEToLRotationMatrix(), and giveLocalCoordinateSystem().

◆ initializeFrom()

void oofem::Truss2d::initializeFrom	(	InputRecord &	ir,
		int	priority )

overridevirtual

Reimplemented from oofem::NLStructuralElement.

Definition at line 289 of file truss2d.C.

References cs_mode, oofem::Domain::dofmanPPM, oofem::FEMComponent::giveDomain(), oofem::NLStructuralElement::initializeFrom(), IPK_Truss2d_cs, oofem::FEMComponent::number, and PM_UPDATE_PARAMETER.

◆ postInitialize()

void oofem::Truss2d::postInitialize ( )

overridevirtual

Performs post initialization steps.

Reimplemented from oofem::Element.

Definition at line 297 of file truss2d.C.

References cs_mode, oofem::ComponentInputException::ctElement, IPK_Truss2d_cs, and oofem::Element::postInitialize().

◆ resolveCoordIndices()

void oofem::Truss2d::resolveCoordIndices	(	int &	c1,
		int &	c2 )

protected

Definition at line 269 of file truss2d.C.

References cs_mode, and OOFEM_ERROR.

Referenced by computeBmatrixAt(), computeGlobalCoordinates(), computeLength(), drawDeformedGeometry(), drawRawGeometry(), and givePitch().

◆ testElementExtension()

int oofem::Truss2d::testElementExtension ( ElementExtension ext )

inlineoverridevirtual

Tests if the element implements required extension. ElementExtension type defines the list of all available element extensions.

Parameters

ext	Extension to be tested.

Returns: Nonzero if extension supported.

See also: ElementExtension

Reimplemented from oofem::Element.

Definition at line 94 of file truss2d.h.

References oofem::Element_EdgeLoadSupport.

Member Data Documentation

◆ cs_mode

int oofem::Truss2d::cs_mode

protected

Definition at line 65 of file truss2d.h.

Referenced by drawRawGeometry(), giveDofManDofIDMask(), giveInterpolation(), initializeFrom(), postInitialize(), resolveCoordIndices(), and Truss2d().

◆ interp

FEI2dLineLin oofem::Truss2d::interp

staticprotected

Initial value:

= { FEI2dLineLin(1, 3),
                                      FEI2dLineLin(1, 2),
                                      FEI2dLineLin(2, 3) }

Definition at line 67 of file truss2d.h.

Referenced by giveInterpolation(), and oofem::REGISTER_Element().

◆ IPK_Truss2d_cs

ParamKey oofem::Truss2d::IPK_Truss2d_cs

staticprotected

Definition at line 68 of file truss2d.h.

Referenced by initializeFrom(), and postInitialize().

◆ length

double oofem::Truss2d::length

protected

Definition at line 63 of file truss2d.h.

Referenced by computeLength(), and Truss2d().

◆ pitch

double oofem::Truss2d::pitch

protected

Definition at line 64 of file truss2d.h.

Referenced by computeLoadLEToLRotationMatrix(), giveLocalCoordinateSystem(), givePitch(), and Truss2d().

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

Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ Truss2d()

◆ ~Truss2d()

Member Function Documentation

◆ computeBHmatrixAt()

◆ computeBmatrixAt()

◆ computeConstitutiveMatrix_dPdF_At()

◆ computeConstitutiveMatrixAt()

◆ computeEdgeVolumeAround()

◆ computeGaussPoints()

◆ computeGlobalCoordinates()

◆ computeLength()

◆ computeLoadLEToLRotationMatrix()

◆ computeLumpedMassMatrix()

◆ computeMassMatrix()

◆ computeNmatrixAt()

◆ computeNumberOfDofs()

◆ computeStressVector()

◆ computeVolumeAround()

◆ drawDeformedGeometry()

◆ drawRawGeometry()

◆ giveCharacteristicLength()

◆ giveClassName()

◆ giveDofManDofIDMask()

◆ giveEdgeDofMapping()

◆ giveGeometryType()

◆ giveInputRecordName()

◆ giveIntegrationDomain()

◆ giveInterpolation()

◆ giveLocalCoordinateSystem()

◆ giveMaterialMode()

◆ givePitch()

◆ initializeFrom()

◆ postInitialize()

◆ resolveCoordIndices()

◆ testElementExtension()

Member Data Documentation

◆ cs_mode

◆ interp

◆ IPK_Truss2d_cs

◆ length

◆ pitch