This class implements a 2-dimensional beam element with cubic lateral displacement, quadratic rotations, and linear longitudinal displacements and geometry. More...

#include <beam2d.h>

Inheritance diagram for oofem::Beam2d:

Collaboration diagram for oofem::Beam2d:

Public Member Functions
	Beam2d (int n, Domain *aDomain)

virtual	~Beam2d ()

virtual void	computeConsistentMassMatrix (FloatMatrix &answer, TimeStep tStep, double &mass, const double ipDensity=NULL)
	Computes consistent mass matrix of receiver using numerical integration over element volume. More...

virtual void	computeInitialStressMatrix (FloatMatrix &answer, TimeStep *tStep)
	Computes initial stress matrix for linear stability problem. More...

virtual void	computeStiffnessMatrix (FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep)
	Computes numerically stiffness matrix of receiver. More...

virtual int	giveLocalCoordinateSystem (FloatMatrix &answer)
	Returns local coordinate system of receiver Required by material models with ortho- and anisotrophy. More...

virtual void	giveInternalForcesVector (FloatArray &answer, TimeStep *tStep, int useUpdatedGpRecord=0)
	Returns equivalent nodal forces vectors. More...

virtual void	giveEndForcesVector (FloatArray &answer, TimeStep *tStep)

virtual int	testElementExtension (ElementExtension ext)
	Tests if the element implements required extension. More...

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

virtual FEInterpolation *	giveInterpolation () const

virtual FEInterpolation *	giveInterpolation (DofIDItem id) const
	Returns the interpolation for the specific dof id. More...

virtual int	computeNumberOfDofs ()
	Computes or simply returns total number of element's local DOFs. More...

virtual int	computeNumberOfGlobalDofs ()
	Computes the total number of element's global dofs. More...

virtual void	giveDofManDofIDMask (int inode, IntArray &) const
	Returns dofmanager dof mask for node. More...

virtual int	giveNumberOfInternalDofManagers () const

virtual DofManager *	giveInternalDofManager (int i) const
	Returns i-th internal element dof manager of the receiver. More...

virtual void	giveInternalDofManDofIDMask (int i, IntArray &answer) const
	Returns internal dofmanager dof mask for node. More...

virtual void	giveBoundaryLocationArray (IntArray &locationArray, const IntArray &bNodes, const UnknownNumberingScheme &s, IntArray *dofIds=NULL)
	Returns the location array for the boundary of the element. More...

virtual void	giveBoundaryLocationArray (IntArray &locationArray, const IntArray &bNodes, const IntArray &dofIDMask, const UnknownNumberingScheme &s, IntArray *dofIds=NULL)

virtual double	computeVolumeAround (GaussPoint *gp)
	Returns volume related to given integration point. More...

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

virtual const char *	giveClassName () const

virtual const char *	giveInputRecordName () const

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

virtual void	drawRawGeometry (oofegGraphicContext &gc, TimeStep *tStep)

virtual void	drawDeformedGeometry (oofegGraphicContext &gc, TimeStep *tStep, UnknownType)

virtual void	computeStrainVectorInLayer (FloatArray &answer, const FloatArray &masterGpStrain, GaussPoint masterGp, GaussPoint slaveGp, TimeStep *tStep)
	Computes full 3D strain vector in element layer. More...

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

Public Member Functions inherited from oofem::BeamBaseElement
	BeamBaseElement (int n, Domain *d)

virtual	~BeamBaseElement ()

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

virtual	~StructuralElement ()
	Destructor. More...

virtual void	giveCharacteristicMatrix (FloatMatrix &answer, CharType, TimeStep *tStep)
	Computes characteristic matrix of receiver of requested type in given time step. More...

virtual void	giveCharacteristicVector (FloatArray &answer, CharType type, ValueModeType mode, TimeStep *tStep)
	Computes characteristic vector of receiver of requested type in given time step. More...

virtual void	computeMassMatrix (FloatMatrix &answer, TimeStep *tStep)
	Computes mass matrix of receiver. More...

virtual void	computeLumpedMassMatrix (FloatMatrix &answer, TimeStep *tStep)
	Computes lumped mass matrix of receiver. More...

virtual void	giveMassMtrxIntegrationgMask (IntArray &answer)
	Returns mask indicating, which unknowns (their type and ordering is the same as element unknown vector) participate in mass matrix integration. More...

void	computeStiffnessMatrix_withIRulesAsSubcells (FloatMatrix &answer, MatResponseMode rMode, TimeStep *tStep)

virtual void	computeField (ValueModeType mode, TimeStep *tStep, const FloatArray &lcoords, FloatArray &answer)
	Computes the unknown vector interpolated at the specified local coordinates. More...

virtual void	giveInternalForcesVector_withIRulesAsSubcells (FloatArray &answer, TimeStep *tStep, int useUpdatedGpRecord=0)

virtual void	computeStrainVector (FloatArray &answer, GaussPoint gp, TimeStep tStep)
	Compute strain vector of receiver evaluated at given integration point at given time step from element displacement vector. More...

virtual void	computeResultingIPTemperatureAt (FloatArray &answer, TimeStep tStep, GaussPoint gp, ValueModeType mode)
	Computes at given time (tStep) the the resulting temperature component array. More...

virtual void	computeResultingIPEigenstrainAt (FloatArray &answer, TimeStep tStep, GaussPoint gp, ValueModeType mode)
	Computes at given time the resulting eigenstrain component array. More...

virtual int	adaptiveUpdate (TimeStep *tStep)
	Updates the internal state variables stored in all IPs according to already mapped state. More...

virtual void	updateInternalState (TimeStep *tStep)
	Updates element state after equilibrium in time step has been reached. More...

virtual void	updateYourself (TimeStep *tStep)
	Updates element state after equilibrium in time step has been reached. More...

virtual int	checkConsistency ()
	Performs consistency check. More...

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

virtual int	giveInternalStateAtNode (FloatArray &answer, InternalStateType type, InternalStateMode mode, int node, TimeStep *tStep)
	Returns internal state variable (like stress,strain) at node of element in Reduced form, the way how is obtained is dependent on InternalValueType. More...

virtual void	showSparseMtrxStructure (CharType mtrx, oofegGraphicContext &gc, TimeStep *tStep)
	Shows sparse structure. More...

virtual void	showExtendedSparseMtrxStructure (CharType mtrx, oofegGraphicContext &gc, TimeStep *tStep)
	Shows extended sparse structure (for example, due to nonlocal interactions for tangent stiffness) More...

virtual void	computeLoadVector (FloatArray &answer, BodyLoad load, CharType type, ValueModeType mode, TimeStep tStep)
	Computes the contribution of the given body load (volumetric). More...

virtual void	computeBoundarySurfaceLoadVector (FloatArray &answer, BoundaryLoad load, int boundary, CharType type, ValueModeType mode, TimeStep tStep, bool global=true)
	Computes the contribution of the given load at the given boundary surface in global coordinate system. More...

virtual void	computeEdgeNMatrix (FloatMatrix &answer, int boundaryID, const FloatArray &lcoords)
	computes edge interpolation matrix More...

virtual void	computeSurfaceNMatrix (FloatMatrix &answer, int boundaryID, const FloatArray &lcoords)
	Computes surface interpolation matrix. More...

StructuralCrossSection *	giveStructuralCrossSection ()
	Helper function which returns the structural cross-section for the element. More...

virtual void	createMaterialStatus ()

virtual void	updateBeforeNonlocalAverage (TimeStep *tStep)
	Updates internal element state (in all integration points of receiver) before nonlocal averaging takes place. More...

virtual void	giveNonlocalLocationArray (IntArray &locationArray, const UnknownNumberingScheme &us)
	Returns the "nonlocal" location array of receiver. More...

virtual void	addNonlocalStiffnessContributions (SparseMtrx &dest, const UnknownNumberingScheme &s, TimeStep *tStep)
	Adds the "nonlocal" contribution to stiffness matrix, to account for nonlocality of material model. More...

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

	Element (const Element &src)=delete

Element &	operator= (const Element &src)=delete

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

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)
	Returns internal state variable (like stress,strain) at side of element in Reduced form If side is possessing DOFs, otherwise recover techniques will not work due to absence of side-shape functions. More...

int	giveLabel () const

int	giveGlobalNumber () const

void	setGlobalNumber (int num)
	Sets receiver globally unique number. More...

elementParallelMode	giveParallelMode () const
	Return elementParallelMode of receiver. More...

void	setParallelMode (elementParallelMode _mode)
	Sets parallel mode of element. More...

virtual elementParallelMode	giveKnotSpanParallelMode (int) const
	Returns the parallel mode for particular knot span of the receiver. More...

int	packUnknowns (DataStream &buff, TimeStep *tStep)
	Pack all necessary data of element (according to its parallel_mode) integration points into given communication buffer. More...

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

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

const IntArray *	givePartitionList () const
	Returns partition list of receiver. More...

void	setPartitionList (IntArray &pl)
	Sets partition list of receiver. More...

virtual double	predictRelativeComputationalCost ()
	Returns the weight representing relative computational cost of receiver The reference element is triangular plane stress element with linear approximation, single integration point and linear isotropic material. More...

virtual double	giveRelativeSelfComputationalCost ()
	Returns the weight representing relative computational cost of receiver The reference element is triangular plane stress element. More...

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

IntArray *	giveBodyLoadArray ()
	Returns array containing load numbers of loads acting on element. More...

IntArray *	giveBoundaryLoadArray ()
	Returns array containing load numbers of boundary loads acting on element. 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...

void	giveLocationArray (IntArray &locationArray, const UnknownNumberingScheme &s, IntArray *dofIds=NULL) const
	Returns the location array (array of code numbers) of receiver for given numbering scheme. More...

void	giveLocationArray (IntArray &locationArray, const IntArray &dofIDMask, const UnknownNumberingScheme &s, IntArray *dofIds=NULL) const

virtual int	giveNumberOfDofs ()

virtual double	giveCharacteristicValue (CharType type, TimeStep *tStep)
	Computes characteristic value of receiver of requested type in given time step. More...

virtual void	computeTangentFromSurfaceLoad (FloatMatrix &answer, SurfaceLoad load, int boundary, MatResponseMode rmode, TimeStep tStep)
	Computes the tangent contribution of the given load at the given boundary. More...

virtual void	computeTangentFromEdgeLoad (FloatMatrix &answer, EdgeLoad load, int boundary, MatResponseMode rmode, TimeStep tStep)
	Computes the tangent contribution of the given load at the given boundary. More...

const IntArray &	giveBodyLoadList () const
	Returns receiver list of bodyloads. More...

const IntArray &	giveBoundaryLoadList () const
	Returns receiver list of boundary loads. More...

void	computeVectorOf (ValueModeType u, TimeStep *tStep, FloatArray &answer)
	Returns local vector of unknowns. More...

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)
	Boundary version of computeVectorOf. More...

void	computeVectorOf (PrimaryField &field, const IntArray &dofIDMask, ValueModeType u, TimeStep *tStep, FloatArray &answer, bool padding=false)
	Returns local vector of unknowns. More...

void	computeVectorOfPrescribed (ValueModeType u, TimeStep *tStep, FloatArray &answer)
	Returns local vector of prescribed unknowns. More...

void	computeVectorOfPrescribed (const IntArray &dofIDMask, ValueModeType type, TimeStep *tStep, FloatArray &answer)
	Returns local vector of prescribed unknowns. More...

int	computeNumberOfPrimaryMasterDofs ()
	Computes the total number of element's primary master DOFs. More...

virtual bool	giveRotationMatrix (FloatMatrix &answer)
	Transformation matrices updates rotation matrix between element-local and primary DOFs, taking into account nodal c.s. More...

virtual bool	computeDofTransformationMatrix (FloatMatrix &answer, const IntArray &nodes, bool includeInternal)
	Returns transformation matrix for DOFs from global coordinate system to local coordinate system in nodes. More...

virtual void	giveElementDofIDMask (IntArray &answer) const
	Returns element dof mask for node. More...

virtual double	computeVolumeAreaOrLength ()
	Computes the volume, area or length of the element depending on its spatial dimension. More...

double	computeMeanSize ()
	Computes the size of the element defined as its length. More...

virtual double	computeVolume ()
	Computes the volume. More...

virtual double	computeArea ()
	Computes the area (zero for all but 2d geometries). More...

virtual void	giveBoundaryEdgeNodes (IntArray &bNodes, int boundary)
	Returns list of receiver boundary nodes for given edge. More...

virtual void	giveBoundarySurfaceNodes (IntArray &bNodes, int boundary)
	Returns list of receiver boundary nodes for given surface. More...

virtual IntegrationRule *	giveBoundaryEdgeIntegrationRule (int order, int boundary)
	Returns boundary edge integration rule. More...

virtual IntegrationRule *	giveBoundarySurfaceIntegrationRule (int order, int boundary)
	Returns boundary surface integration rule. More...

int	giveDofManagerNumber (int i) const
	Translates local to global indices for dof managers. More...

const IntArray &	giveDofManArray () const

void	addDofManager (DofManager *dMan)

DofManager *	giveDofManager (int i) const

Node *	giveNode (int i) const
	Returns reference to the i-th node of element. More...

virtual ElementSide *	giveSide (int i) const
	Returns reference to the i-th side of element. More...

virtual Material *	giveMaterial ()

int	giveMaterialNumber () const

CrossSection *	giveCrossSection ()

void	setMaterial (int matIndx)
	Sets the material of receiver. More...

virtual void	setCrossSection (int csIndx)
	Sets the cross section model of receiver. More...

virtual int	giveNumberOfDofManagers () const

virtual int	giveNumberOfNodes () const
	Returns number of nodes of receiver. More...

void	setDofManagers (const IntArray &dmans)
	Sets receiver dofManagers. More...

void	setBodyLoads (const IntArray &bodyLoads)
	Sets receiver bodyLoadArray. More...

void	setIntegrationRules (std::vector< std::unique_ptr< IntegrationRule > > irlist)
	Sets integration rules. More...

virtual integrationDomain	giveIntegrationDomain () const
	Returns integration domain for receiver, used to initialize integration point over receiver volume. More...

virtual int	giveIntegrationRuleLocalCodeNumbers (IntArray &answer, IntegrationRule &ie)
	Assembles the code numbers of given integration element (sub-patch) This is done by obtaining list of nonzero shape functions and by collecting the code numbers of nodes corresponding to these shape functions. More...

int	giveRegionNumber ()

virtual void	postInitialize ()
	Performs post initialization steps. More...

virtual void	initializeYourself (TimeStep *timeStepWhenICApply)
	Initialization according to state given by initial conditions. More...

virtual bool	isActivated (TimeStep *tStep)

virtual bool	isCast (TimeStep *tStep)

virtual void	initForNewStep ()
	Initializes receivers state to new time step. More...

virtual Element_Geometry_Type	giveGeometryType () const
	Returns the element geometry type. More...

virtual int	giveSpatialDimension ()
	Returns the element spatial dimension (1, 2, or 3). More...

virtual int	giveNumberOfBoundarySides ()

virtual int	giveDefaultIntegrationRule () const
	Returns id of default integration rule. More...

virtual IntegrationRule *	giveDefaultIntegrationRulePtr ()
	Access method for default integration rule. More...

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)
	Default implementation returns length of element projection into specified direction. More...

virtual double	giveCharacteristicLength (const FloatArray &normalToCrackPlane)
	Returns the size of element in the given direction, in some cases adjusted (e.g. More...

double	giveCharacteristicLengthForPlaneElements (const FloatArray &normalToCrackPlane)
	Returns the size of element in the given direction if the direction is in the XY plane, otherwise gives the mean size defined as the square root of the element area. More...

double	giveCharacteristicLengthForAxisymmElements (const FloatArray &normalToCrackPlane)
	Returns the size of an axisymmetric element in the given direction if the direction is in the XY plane, otherwise gives the mean distance vrom the symmetry axis multiplied by pi. More...

virtual double	giveCharacteristicSize (GaussPoint *gp, FloatArray &normalToCrackPlane, ElementCharSizeMethod method)
	Returns characteristic element size for a given integration point and given direction. More...

virtual double	giveParentElSize () const
	Returns the size (length, area or volume depending on element type) of the parent element. More...

virtual int	computeGlobalCoordinates (FloatArray &answer, const FloatArray &lcoords)
	Computes the global coordinates from given element's local coordinates. More...

virtual bool	computeLocalCoordinates (FloatArray &answer, const FloatArray &gcoords)
	Computes the element local coordinates from given global coordinates. More...

virtual void	computeMidPlaneNormal (FloatArray &answer, const GaussPoint *gp)
	Computes mid-plane normal of receiver at integration point. More...

virtual int	adaptiveMap (Domain oldd, TimeStep tStep)
	Initializes the internal state variables stored in all IPs according to state in given domain. More...

virtual int	mapStateVariables (Domain &iOldDom, const TimeStep &iTStep)
	Maps the internal state variables stored in all IPs from the old domain to the new domain. More...

virtual int	adaptiveFinish (TimeStep *tStep)
	Finishes the mapping for given time step. More...

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

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. More...

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

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

Public Member Functions inherited from oofem::LayeredCrossSectionInterface
	LayeredCrossSectionInterface ()

Public Member Functions inherited from oofem::Interface
	Interface ()
	Constructor. More...

virtual	~Interface ()

Protected Member Functions
virtual void	computeBoundaryEdgeLoadVector (FloatArray &answer, BoundaryLoad load, int edge, CharType type, ValueModeType mode, TimeStep tStep, bool global=true)
	Computes the contribution of the given load at the given boundary edge. More...

virtual void	computeBmatrixAt (GaussPoint *, FloatMatrix &, int=1, int=ALL_STRAINS)
	Computes the geometrical matrix of receiver in given integration point. More...

virtual void	computeNmatrixAt (const FloatArray &iLocCoord, FloatMatrix &)
	Computes interpolation matrix for element unknowns. More...

virtual bool	computeGtoLRotationMatrix (FloatMatrix &answer)
	Returns transformation matrix from global c.s. More...

virtual void	computeConstitutiveMatrixAt (FloatMatrix &answer, MatResponseMode rMode, GaussPoint gp, TimeStep tStep)
	Computes constitutive matrix of receiver. More...

virtual void	computeStressVector (FloatArray &answer, const FloatArray &strain, GaussPoint gp, TimeStep tStep)
	Computes the stress vector of receiver at given integration point, at time step tStep. More...

void	computeBodyLoadVectorAt (FloatArray &answer, Load load, TimeStep tStep, ValueModeType mode)
	Computes the load vector due to body load acting on receiver, at given time step. More...

double	giveKappaCoeff (TimeStep *tStep)

virtual double	computeLength ()
	Computes the length (zero for all but 1D geometries) More...

double	givePitch ()

virtual void	computeGaussPoints ()
	Initializes the array of integration rules member variable. More...

virtual MaterialMode	giveMaterialMode ()
	Returns material mode for receiver integration points. More...

virtual int	giveNumberOfIPForMassMtrxIntegration ()
	Return desired number of integration points for consistent mass matrix computation, if required. More...

bool	hasDofs2Condense ()

Protected Member Functions inherited from oofem::BeamBaseElement
virtual void	computeLocalForceLoadVector (FloatArray &answer, TimeStep *tStep, ValueModeType mode)
	Computes element end force vector from applied loading in local coordinate system. More...

Protected Member Functions inherited from oofem::StructuralElement
void	condense (FloatMatrix stiff, FloatMatrix mass, FloatArray load, IntArray what)
	General service for condensation of stiffness and optionally load vector and mass or initial stress matrices of receiver. More...

virtual void	setupIRForMassMtrxIntegration (IntegrationRule &iRule)
	Setup Integration Rule Gauss Points for Mass Matrix integration. More...

virtual void	computePointLoadVectorAt (FloatArray &answer, Load load, TimeStep tStep, ValueModeType mode, bool global=true)
	Computes point load vector contribution of receiver for given load (should has BoundaryLoad Base). More...

virtual void	giveEdgeDofMapping (IntArray &answer, int iEdge) const
	Assembles edge dof mapping mask, which provides mapping between edge local DOFs and "global" element DOFs. More...

virtual void	giveSurfaceDofMapping (IntArray &answer, int iSurf) const
	Assembles surface dof mapping mask, which provides mapping between surface local DOFs and "global" element DOFs. More...

virtual IntegrationRule *	GetSurfaceIntegrationRule (int order)

virtual double	computeEdgeVolumeAround (GaussPoint *gp, int iEdge)
	Computes volume related to integration point on local edge. More...

virtual double	computeSurfaceVolumeAround (GaussPoint *gp, int iSurf)
	Computes volume related to integration point on local surface. More...

virtual int	computeLoadGToLRotationMtrx (FloatMatrix &answer)
	Returns transformation matrix from global coordinate system to local element coordinate system for element load vector components. More...

virtual int	computeLoadLEToLRotationMatrix (FloatMatrix &answer, int iEdge, GaussPoint *gp)
	Returns transformation matrix from local edge c.s to element local coordinate system of load vector components. More...

virtual int	computeLoadLSToLRotationMatrix (FloatMatrix &answer, int iSurf, GaussPoint *gp)
	Returns transformation matrix from local surface c.s to element local coordinate system of load vector components. More...

Protected Attributes
double	kappa

double	pitch

double	length

DofManager *	ghostNodes [2]
	Ghost nodes are used to introduce additional DOFs at element. More...

int	numberOfCondensedDofs
	number of condensed DOFs More...

Protected Attributes inherited from oofem::StructuralElement
std::unique_ptr< FloatArray >	initialDisplacements
	Initial displacement vector, describes the initial nodal displacements when element has been casted. More...

Protected Attributes inherited from oofem::Element
int	numberOfDofMans
	Number of dofmanagers. More...

IntArray	dofManArray
	Array containing dofmanager numbers. More...

int	material
	Number of associated material. More...

int	crossSection
	Number of associated cross section. More...

IntArray	bodyLoadArray
	Array containing indexes of loads (body loads and boundary loads are kept separately), that apply on receiver. More...

IntArray	boundaryLoadArray

std::vector< std::unique_ptr< IntegrationRule > >	integrationRulesArray
	List of integration rules of receiver (each integration rule contains associated integration points also). More...

FloatMatrix	elemLocalCS
	Transformation material matrix, used in orthotropic and anisotropic materials, global->local transformation. More...

int	activityTimeFunction
	Element activity time function. If defined, nonzero value indicates active receiver, zero value inactive element. More...

int	globalNumber
	In parallel mode, globalNumber contains globally unique DoFManager number. More...

int	numberOfGaussPoints
	Number of integration points as specified by nip. More...

elementParallelMode	parallel_mode
	Determines the parallel mode of the element. More...

IntArray	partitions
	List of partition sharing the shared element or remote partition containing remote element counterpart. 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...

Static Protected Attributes
static FEI2dLineLin	interp_geom

static FEI2dLineHermite	interp_beam

Detailed Description

This class implements a 2-dimensional beam element with cubic lateral displacement, quadratic rotations, and linear longitudinal displacements and geometry.

This is an exact displacement approximation for beam with no nonnodal loading.

This class is not derived from linear beam or truss element, because it does not support any material nonlinearities (if should, stiffness must be integrated)

Definition at line 62 of file beam2d.h.

Constructor & Destructor Documentation

oofem::Beam2d::Beam2d	(	int	n,
		Domain *	aDomain
	)

Definition at line 66 of file beam2d.C.

References ghostNodes, kappa, length, numberOfCondensedDofs, oofem::Element::numberOfDofMans, oofem::Element::numberOfGaussPoints, and pitch.

oofem::Beam2d::~Beam2d ( )

virtual

Definition at line 80 of file beam2d.C.

References ghostNodes.

Member Function Documentation

void oofem::Beam2d::computeBmatrixAt	(	GaussPoint *	gp,
		FloatMatrix &	answer,
		int	lowerIndx = `1`,
		int	upperIndx = `ALL_STRAINS`
	)

protectedvirtual

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 102 of file beam2d.C.

References oofem::FloatMatrix::at(), computeLength(), oofem::FEMComponent::domain, oofem::EngngModel::giveCurrentStep(), oofem::Domain::giveEngngModel(), giveKappaCoeff(), oofem::GaussPoint::giveNaturalCoordinate(), kappa, oofem::FloatMatrix::resize(), and oofem::FloatMatrix::zero().

Referenced by computeStiffnessMatrix(), and giveInputRecordName().

void oofem::Beam2d::computeBodyLoadVectorAt	(	FloatArray &	answer,
		Load *	load,
		TimeStep *	tStep,
		ValueModeType	mode
	)

protectedvirtual

Computes the load vector due to body load acting on receiver, at given time step.

Default implementation computes body load vector numerically as $l=\int_V N^{\mathrm{T}} f \rho\;\mathrm{d}V$ using default integration rule. Result is transformed to global c.s.

Parameters

answer	Computed load vector due to body load
load	Body load which contribution is computed.
tStep	Time step.
mode	determines the response mode

Reimplemented from oofem::StructuralElement.

Definition at line 490 of file beam2d.C.

References oofem::StructuralElement::computeBodyLoadVectorAt(), oofem::CS_Area, oofem::Element::giveCrossSection(), and oofem::FloatArray::times().

Referenced by giveInputRecordName().

void oofem::Beam2d::computeBoundaryEdgeLoadVector	(	FloatArray &	answer,
		BoundaryLoad *	load,
		int	edge,
		CharType	type,
		ValueModeType	mode,
		TimeStep *	tStep,
		bool	global = `true`
	)

protectedvirtual

Computes the contribution of the given load at the given boundary edge.

In general, the answer should include only relevant DOFs at the edge. The related is giveBoundaryLocationArray method, which should return corresponding code numbers..

Note: Elements which do not have an contribution should resize the vector to be empty.

Parameters

answer	Requested contribution of load (in Global c.s.).
load	Load to compute contribution from.
edge	Edge number.
type	Type of the contribution.
mode	Determines mode of answer.
tStep	Time step when answer is computed.
global	if true (default) then contribution is in global c.s., when false then contribution is in element local c.s.

Todo:: Change the load type to "BoundaryEdgeLoad" maybe?

Reimplemented from oofem::StructuralElement.

Definition at line 444 of file beam2d.C.

References oofem::FloatArray::clear(), oofem::Element::computeGlobalCoordinates(), computeGtoLRotationMatrix(), computeLength(), oofem::StructuralElement::computeLoadGToLRotationMtrx(), computeNmatrixAt(), oofem::Load::computeValues(), oofem::Load::CST_Global, oofem::BoundaryLoad::giveCoordSystMode(), oofem::Element::giveDefaultIntegrationRulePtr(), N, OOFEM_ERROR, oofem::FloatArray::plusProduct(), and oofem::FloatArray::rotatedWith().

Referenced by giveInputRecordName().

void oofem::Beam2d::computeConsistentMassMatrix	(	FloatMatrix &	answer,
		TimeStep *	tStep,
		double &	mass,
		const double *	ipDensity = `NULL`
	)

virtual

Computes consistent mass matrix of receiver using numerical integration over element volume.

Mass matrix is computed as $M = \int_V N^{\mathrm{T}} \rho N dV$ , where $ N $ is displacement approximation matrix. The number of necessary integration points is determined using this->giveNumberOfIPForMassMtrxIntegration service. Only selected degrees of freedom participate in integration of mass matrix. This is described using dof mass integration mask. This mask is obtained from this->giveMassMtrxIntegrationgMask service. The nonzero mask value at i-th position indicates that i-th element DOF participates in mass matrix computation. The result is in element local coordinate system.

Parameters

answer	Mass matrix.
tStep	Time step.
mass	Total mass of receiver.

Reimplemented from oofem::StructuralElement.

Definition at line 572 of file beam2d.C.

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

void oofem::Beam2d::computeConstitutiveMatrixAt	(	FloatMatrix &	answer,
		MatResponseMode	rMode,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

protectedvirtual

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 193 of file beam2d.C.

References oofem::StructuralCrossSection::give2dBeamStiffMtrx(), and oofem::StructuralElement::giveStructuralCrossSection().

Referenced by computeStiffnessMatrix(), giveInputRecordName(), and giveKappaCoeff().

void oofem::Beam2d::computeGaussPoints ( )

protectedvirtual

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 129 of file beam2d.C.

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

Referenced by giveInputRecordName().

bool oofem::Beam2d::computeGtoLRotationMatrix ( FloatMatrix & answer )

protectedvirtual

Returns transformation matrix from global c.s.

to local element c.s., i.e. $ r_l =T r_g $ . If no transformation is necessary then answer is empty matrix and zero value is returned.

Parameters

answer Computed rotation matrix.

Returns: Nonzero if transformation is necessary, zero otherwise.

Reimplemented from oofem::Element.

Definition at line 207 of file beam2d.C.

References oofem::FloatMatrix::at(), oofem::FloatMatrix::beProductOf(), computeNumberOfGlobalDofs(), ghostNodes, givePitch(), hasDofs2Condense(), pitch, oofem::FloatMatrix::resize(), and oofem::FloatMatrix::zero().

Referenced by computeBoundaryEdgeLoadVector(), and giveInputRecordName().

void oofem::Beam2d::computeInitialStressMatrix	(	FloatMatrix &	answer,
		TimeStep *	tStep
	)

virtual

Computes initial stress matrix for linear stability problem.

Default implementation is not provided. Please note, that initial stress matrix depends on normal forces of element, corresponding engineering model must take this into account.

Parameters

answer	Computed initial stress matrix.
tStep	Time step.

Reimplemented from oofem::StructuralElement.

Definition at line 622 of file beam2d.C.

References oofem::FloatArray::at(), oofem::FloatMatrix::at(), computeLength(), giveEndForcesVector(), giveKappaCoeff(), kappa, oofem::min(), N, oofem::FloatMatrix::resize(), oofem::FloatMatrix::symmetrized(), oofem::FloatMatrix::times(), and oofem::FloatMatrix::zero().

double oofem::Beam2d::computeLength ( )

protectedvirtual

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

Returns: Element length.

Reimplemented from oofem::Element.

Definition at line 301 of file beam2d.C.

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

Referenced by computeBmatrixAt(), computeBoundaryEdgeLoadVector(), computeConsistentMassMatrix(), computeInitialStressMatrix(), computeNmatrixAt(), computeStiffnessMatrix(), computeVolumeAround(), giveInputRecordName(), and giveKappaCoeff().

void oofem::Beam2d::computeNmatrixAt	(	const FloatArray &	iLocCoord,
		FloatMatrix &	answer
	)

protectedvirtual

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 142 of file beam2d.C.

References oofem::FloatArray::at(), oofem::FloatMatrix::at(), computeLength(), oofem::FEMComponent::domain, oofem::EngngModel::giveCurrentStep(), oofem::Domain::giveEngngModel(), giveKappaCoeff(), kappa, oofem::FloatMatrix::resize(), and oofem::FloatMatrix::zero().

Referenced by computeBoundaryEdgeLoadVector(), and giveInputRecordName().

virtual int oofem::Beam2d::computeNumberOfDofs ( )

inlinevirtual

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 97 of file beam2d.h.

virtual int oofem::Beam2d::computeNumberOfGlobalDofs ( )

inlinevirtual

Computes the total number of element's global dofs.

The transitions from global c.s. to nodal c.s. should NOT be included.

Returns: Total number of global DOFs of element.

Reimplemented from oofem::Element.

Definition at line 98 of file beam2d.h.

References giveDofManDofIDMask(), and numberOfCondensedDofs.

Referenced by computeGtoLRotationMatrix().

void oofem::Beam2d::computeStiffnessMatrix	(	FloatMatrix &	answer,
		MatResponseMode	rMode,
		TimeStep *	tStep
	)

virtual

Computes numerically stiffness matrix of receiver.

Default implementation computes element stiffness using $K=\int_v B^{\mathrm{T}} D B \mathrm{d}V$ formulae, where $ B $ is element geometric matrix and $ D $ is material stiffness matrix. No geometrical nonlinearity is taken into account. NUmerical integration procedure uses integrationRulesArray for numerical integration. Support for reduced or selected integration is implemented. The individual integration rules are assumed to correspond to different terms from which the overall matrix is assembled.

If there is one integration rule, the full integration of all coefficients is performed. Otherwise, integration is performed using following rules. Each integration rule can specify start and end strain index of strain vector components for which is valid. It is necessary to ensure that these start and end indexes, dividing geometrical matrix into blocks, are not overlapping and that each strain component is included.

Then stiffness matrix is obtained as summation of integrals $I_{ij}=\int_v B^{\mathrm{T}}_i D_{ij} B_j \mathrm{d}V$ where $ B_i $ is i-th block of geometrical matrix and $D_{ij}$ is corresponding constitutive sub-matrix. The geometrical matrix is obtained using computeBmatrixAt service and the constitutive matrix is obtained using computeConstitutiveMatrixAt service. The $I_{ij}$ integral is evaluated using such integration rule, which is valid for i-th or j-th block and has smaller number of integration points.

For higher numerical performance, only one half of stiffness matrix is computed and answer is then symmetrized. Therefore, if element matrix will be generally nonsymmetric, one must specialize this method. Finally, the result is transformed into global coordinate system (or nodal coordinate system, if it is defined).

Parameters

answer	Computed stiffness matrix (symmetric).
rMode	Response mode.
tStep	Time step.

Reimplemented from oofem::StructuralElement.

Definition at line 176 of file beam2d.C.

References oofem::FloatMatrix::beProductOf(), oofem::FloatMatrix::clear(), computeBmatrixAt(), computeConstitutiveMatrixAt(), computeLength(), oofem::Element::giveDefaultIntegrationRulePtr(), oofem::FloatMatrix::plusProductSymmUpper(), and oofem::FloatMatrix::symmetrized().

void oofem::Beam2d::computeStrainVectorInLayer	(	FloatArray &	answer,
		const FloatArray &	masterGpStrain,
		GaussPoint *	masterGp,
		GaussPoint *	slaveGp,
		TimeStep *	tStep
	)

virtual

Computes full 3D strain vector in element layer.

This function is necessary if layered cross section is specified..

Parameters

answer	Full layer strain vector.
masterGpStrain	Generalized strain at master gauss point.
masterGp	Element integration point.
slaveGp	Slave integration point representing particular layer.
tStep	Time step.

Implements oofem::LayeredCrossSectionInterface.

Definition at line 271 of file beam2d.C.

References oofem::FloatArray::at(), oofem::CS_BottomZCoord, oofem::CS_TopZCoord, oofem::CrossSection::give(), oofem::Element::giveCrossSection(), oofem::GaussPoint::giveNaturalCoordinate(), and oofem::FloatArray::resize().

Referenced by giveInputRecordName().

void oofem::Beam2d::computeStressVector	(	FloatArray &	answer,
		const FloatArray &	strain,
		GaussPoint *	gp,
		TimeStep *	tStep
	)

protectedvirtual

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 200 of file beam2d.C.

References oofem::StructuralCrossSection::giveGeneralizedStress_Beam2d(), and oofem::StructuralElement::giveStructuralCrossSection().

Referenced by giveInputRecordName().

double oofem::Beam2d::computeVolumeAround ( GaussPoint * gp )

virtual

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 264 of file beam2d.C.

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

Referenced by giveBoundaryLocationArray().

void oofem::Beam2d::drawDeformedGeometry	(	oofegGraphicContext &	gc,
		TimeStep *	tStep,
		UnknownType	type
	)

virtual

Reimplemented from oofem::Element.

Definition at line 691 of file beam2d.C.

References oofem::oofegGraphicContext::getDeformedElementColor(), oofem::oofegGraphicContext::getDefScale(), oofem::Element::giveNode(), oofem::Node::giveUpdatedCoordinate(), OOFEG_DEFORMED_GEOMETRY_LAYER, OOFEG_DEFORMED_GEOMETRY_WIDTH, and oofem::oofegGraphicContext::testElementGraphicActivity().

Referenced by giveInputRecordName().

void oofem::Beam2d::drawRawGeometry	(	oofegGraphicContext &	gc,
		TimeStep *	tStep
	)

virtual

Reimplemented from oofem::Element.

Definition at line 665 of file beam2d.C.

References oofem::oofegGraphicContext::getElementColor(), oofem::Node::giveCoordinate(), oofem::Element::giveNode(), OOFEG_RAW_GEOMETRY_LAYER, OOFEG_RAW_GEOMETRY_WIDTH, and oofem::oofegGraphicContext::testElementGraphicActivity().

Referenced by giveInputRecordName().

virtual void oofem::Beam2d::giveBoundaryLocationArray	(	IntArray &	locationArray,
		const IntArray &	bNodes,
		const UnknownNumberingScheme &	s,
		IntArray *	dofIds = `NULL`
	)

inlinevirtual

Returns the location array for the boundary of the element.

Only takes into account nodes in the bNodes vector.

Reimplemented from oofem::Element.

Definition at line 125 of file beam2d.h.

References oofem::Element::giveLocationArray().

virtual void oofem::Beam2d::giveBoundaryLocationArray	(	IntArray &	locationArray,
		const IntArray &	bNodes,
		const IntArray &	dofIDMask,
		const UnknownNumberingScheme &	s,
		IntArray *	dofIds = `NULL`
	)

inlinevirtual

Reimplemented from oofem::Element.

Definition at line 129 of file beam2d.h.

References computeVolumeAround(), oofem::Element::giveLocationArray(), and printOutputAt().

virtual const char* oofem::Beam2d::giveClassName ( ) const

inlinevirtual

Implements oofem::Interface.

Definition at line 137 of file beam2d.h.

void oofem::Beam2d::giveDofManDofIDMask	(	int	inode,
		IntArray &	answer
	)		const

virtual

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 292 of file beam2d.C.

Referenced by computeNumberOfGlobalDofs().

void oofem::Beam2d::giveEndForcesVector	(	FloatArray &	answer,
		TimeStep *	tStep
	)

virtual

Definition at line 427 of file beam2d.C.

References oofem::BeamBaseElement::computeLocalForceLoadVector(), giveInternalForcesVector(), oofem::FloatArray::isNotEmpty(), and oofem::FloatArray::subtract().

Referenced by computeInitialStressMatrix(), and printOutputAt().

virtual const char* oofem::Beam2d::giveInputRecordName ( ) const

inlinevirtual

Returns: Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 138 of file beam2d.h.

References _IFT_Beam2d_Name, ALL_STRAINS, computeBmatrixAt(), computeBodyLoadVectorAt(), computeBoundaryEdgeLoadVector(), computeConstitutiveMatrixAt(), computeGaussPoints(), computeGtoLRotationMatrix(), computeLength(), computeNmatrixAt(), computeStrainVectorInLayer(), computeStressVector(), drawDeformedGeometry(), drawRawGeometry(), gc, giveIPValue(), giveKappaCoeff(), givePitch(), and initializeFrom().

Interface * oofem::Beam2d::giveInterface ( InterfaceType t )

virtual

Interface requesting service.

See also: InterfaceType

Returns: Requested interface if implemented, otherwise NULL.

Reimplemented from oofem::FEMComponent.

Definition at line 91 of file beam2d.C.

References oofem::LayeredCrossSectionInterfaceType.

Referenced by testElementExtension().

virtual DofManager* oofem::Beam2d::giveInternalDofManager ( int i ) const

inlinevirtual

Returns i-th internal element dof manager of the receiver.

Parameters

i	Internal number of DOF.

Returns: DOF number i.

Reimplemented from oofem::Element.

Definition at line 101 of file beam2d.h.

References oofem::FEMComponent::number, and OOFEM_ERROR.

virtual void oofem::Beam2d::giveInternalDofManDofIDMask	(	int	inode,
		IntArray &	answer
	)		const

inlinevirtual

Returns internal 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 111 of file beam2d.h.

References oofem::DofManager::giveCompleteMasterDofIDArray(), oofem::FEMComponent::number, and OOFEM_ERROR.

void oofem::Beam2d::giveInternalForcesVector	(	FloatArray &	answer,
		TimeStep *	tStep,
		int	useUpdatedGpRecord = `0`
	)

virtual

Returns equivalent nodal forces vectors.

Useful for nonlinear analysis. Default implementation computes result as $F=\int_v B^{\mathrm{T}} \sigma \mathrm{d}V$ , where $\sigma$ is the real element stress vector obtained using computeStressVector service (if useUpdatedGpRecord=0) or (if useUpdatedGpRecord=1) from integration point status. The geometric matrix is obtained using computeBmatrixAt service. Integration is performed using default integration rule, which should produce always valid results, assuming that strains used for computation of stresses are valid.

Parameters

answer	Internal nodal forces vector.
tStep	Time step.
useUpdatedGpRecord	If equal to zero, the stresses in integration points are computed (slow but safe), else if nonzero the stresses are taken directly from integration point status (should be derived from StructuralMaterialStatus) (fast, but engineering model must ensure valid status data in each integration point).

Reimplemented from oofem::StructuralElement.

Definition at line 420 of file beam2d.C.

References oofem::StructuralElement::giveInternalForcesVector().

Referenced by giveEndForcesVector().

FEInterpolation * oofem::Beam2d::giveInterpolation ( ) const

virtual

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

Reimplemented from oofem::Element.

Definition at line 87 of file beam2d.C.

References interp_geom.

Referenced by testElementExtension().

virtual FEInterpolation* oofem::Beam2d::giveInterpolation ( DofIDItem id ) const

inlinevirtual

Returns the interpolation for the specific dof id.

Special elements which uses a mixed interpolation should reimplement this method.

Parameters

id	ID of the dof for the for the requested interpolation.

Returns: Appropriate interpolation, or NULL if none exists.

Reimplemented from oofem::Element.

Definition at line 95 of file beam2d.h.

int oofem::Beam2d::giveIPValue	(	FloatArray &	answer,
		GaussPoint *	gp,
		InternalStateType	type,
		TimeStep *	tStep
	)

virtual

Returns the integration point corresponding value in full form.

Parameters

answer	Contain corresponding integration point value, zero sized if not available.
gp	Integration point to check.
type	Determines the type of internal variable.
tStep	Time step.

Returns: Nonzero if o.k, zero otherwise.

Todo:: Which "error type" should be used? Why are there several? I don't see the point of this enum when there could be different function calls just as well (and different IST values)

Reimplemented from oofem::StructuralElement.

Definition at line 499 of file beam2d.C.

References oofem::FloatArray::at(), oofem::StructuralElement::giveIPValue(), oofem::GaussPoint::giveMaterialStatus(), and oofem::FloatArray::resize().

Referenced by giveInputRecordName().

double oofem::Beam2d::giveKappaCoeff ( TimeStep * tStep )

protected

Definition at line 339 of file beam2d.C.

References oofem::FloatMatrix::at(), computeConstitutiveMatrixAt(), computeLength(), oofem::Element::integrationRulesArray, and kappa.

Referenced by computeBmatrixAt(), computeConsistentMassMatrix(), computeInitialStressMatrix(), computeNmatrixAt(), and giveInputRecordName().

int oofem::Beam2d::giveLocalCoordinateSystem ( FloatMatrix & answer )

virtual

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 356 of file beam2d.C.

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

virtual MaterialMode oofem::Beam2d::giveMaterialMode ( )

inlineprotectedvirtual

Returns material mode for receiver integration points.

Should be specialized.

Returns: Material mode of element.

Reimplemented from oofem::Element.

Definition at line 166 of file beam2d.h.

virtual int oofem::Beam2d::giveNumberOfInternalDofManagers ( ) const

inlinevirtual

Returns: Number of internal DOF managers of element.

Reimplemented from oofem::Element.

Definition at line 100 of file beam2d.h.

virtual int oofem::Beam2d::giveNumberOfIPForMassMtrxIntegration ( )

inlineprotectedvirtual

Return desired number of integration points for consistent mass matrix computation, if required.

Returns: Number of integration points for mass matrix.

TODO this is without the jacobian and density

Reimplemented from oofem::StructuralElement.

Definition at line 167 of file beam2d.h.

double oofem::Beam2d::givePitch ( )

protected

Definition at line 319 of file beam2d.C.

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

Referenced by computeGtoLRotationMatrix(), giveInputRecordName(), and giveLocalCoordinateSystem().

bool oofem::Beam2d::hasDofs2Condense ( )

inlineprotected

Definition at line 169 of file beam2d.h.

Referenced by computeGtoLRotationMatrix().

IRResultType oofem::Beam2d::initializeFrom ( InputRecord * ir )

virtual

Initializes receiver according to object description stored in input record.

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

See also: IR_GIVE_FIELD; IR_GIVE_OPTIONAL_FIELD

Parameters

ir	Input record to initialize from.

Returns: IRResultType

Reimplemented from oofem::StructuralElement.

Definition at line 381 of file beam2d.C.

References _IFT_Beam2d_dofstocondense, oofem::DofManager::appendDof(), oofem::IntArray::at(), ghostNodes, oofem::FEMComponent::giveDomain(), oofem::IntArray::giveSize(), oofem::InputRecord::hasField(), oofem::StructuralElement::initializeFrom(), IR_GIVE_FIELD, oofem::IRRT_BAD_FORMAT, oofem::IRRT_OK, numberOfCondensedDofs, and OOFEM_WARNING.

Referenced by giveInputRecordName().

void oofem::Beam2d::printOutputAt	(	FILE *	file,
		TimeStep *	tStep
	)

virtual

Prints output of receiver to stream, for given time step.

This is used for output into the standard output file.

Parameters

file	File pointer to print to.
tStep	Time step to write for.

Reimplemented from oofem::Element.

Definition at line 541 of file beam2d.C.

References oofem::Element::computeVectorOf(), giveEndForcesVector(), oofem::Element::giveLabel(), oofem::FEMComponent::giveNumber(), and oofem::Element::integrationRulesArray.

Referenced by giveBoundaryLocationArray().

virtual int oofem::Beam2d::testElementExtension ( ElementExtension ext )

inlinevirtual

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 90 of file beam2d.h.

References oofem::Element_EdgeLoadSupport, giveInterface(), and giveInterpolation().

Member Data Documentation

DofManager* oofem::Beam2d::ghostNodes[2]

protected

Ghost nodes are used to introduce additional DOFs at element.

These are needed as we actually do not want to condense selected DOFs, but rather allocate an extra equation to these. This allows to get cooresponding DOFs directly from the global system, avoiding the need to postprocess local displacements at element.

Definition at line 72 of file beam2d.h.

Referenced by Beam2d(), computeGtoLRotationMatrix(), initializeFrom(), and ~Beam2d().