Basic class for the standard stress bar physics plugin object. More...

#include <gmpBar.h>

Inheritance diagram for GmpBar:

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Collaboration diagram for GmpBar:

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Public Types
enum	barPropertyIds { AREA_ID = GmpMechanicalPhysics::NUM_PROPER_IDS , NUM_PROPER_IDS }
	IDs for physics element properties. More...

Public Types inherited from GmpMechanicalPhysics
enum	PhysicsAttributeIds { ISOPARAMETRIC_ID , STRESS_MODE_ID , STRAIN_MODE_ID , P_STRAIN_MODE_ID , BODY_FORCE_ID , CGRAV_ID , GEOMETRIC_ID , RF_MODE_ID , RMAPPINGINFO_ID , K0MODE_ID , STRAIN_RESET_ID , CONTACT_ID , STRAIN_T_ID , NUM_ATTRI_IDS }
	IDs for physics attributes. More...

enum	StateVarIds { U_ID , NUM_STATEVAR_IDS }
	IDs for Mechanical physics state vars. More...

enum	ExternalLoadsIds { PRESSURE_ID , THERMAL_ID , TREF_ID , NUM_EXTLOADS_IDS }
	IDs for Mechanical physics state vars. More...

enum	NodeAttributeIds { S_NA_ID , E_NA_ID , RF_NA_ID , CF_NA_ID , CD_NA_ID , CIV_NA_ID , CIVOLD_NA_ID , NUM_NA_IDS }
	IDs for physics node attributes. More...

enum	GaussAttributeIds { S_GA_ID , SOLD_GA_ID , RS_GA_ID , E_GA_ID , EOLD_GA_ID , YSR_GA_ID , YSROLD_GA_ID , ST_GA_ID , STOLD_GA_ID , ITER_GA_ID , ITEROLD_GA_ID , SUBSTEP_GA_ID , SUBSTEPOLD_GA_ID , LINESEARCH_GA_ID , LINESEARCHOLD_GA_ID , ET_GA_ID , NUM_GA_IDS }
	IDs for physics Gauss attributes. More...

enum	ElementPropertyIds { THICKNESS_ID , BF_ID , GRAV_ID , DENS_ID , DENSB_ID , ALPHA_ID , NUM_PROPER_IDS }
	IDs for physics element properties. More...

enum	BoundaryConditionIds { FIXED_U_BC_ID , FIXED_CF_BC_ID , PL_BC_ID , HL_BC_ID , WP_BC_ID , NUM_BC_IDS }
	IDs for accepted boundary condition types. More...

enum	BoundaryConditionValueIds { BC_UX_ID , BC_UY_ID , BC_UZ_ID , BC_CF_ID , BC_PL_ID , BC_HLR_ID , BC_HL_ID , BC_NRL_ID , BC_SWF_ID , NUM_BCV_IDS }
	IDs for property values from accepted boundary condition types. More...

enum	ContactBCIds { LOCAL_CBC_ID , GLOBAL_CBC_ID , NUM_CBC_IDS }
	IDs for accepted contact boundary conditions. More...

enum	ContactBCValueIds { CBC_KCN_ID , CBC_KSN_ID , CBC_MU_ID , NUM_CBCV_IDS }
	IDs for property values from accepted Contact boundary condition (CBC) More...

Public Member Functions
	GmpBar (const char pluginType, GmSimulationData simulation, QString id, QString description, const GmpFemPhysicsCommonMaterialFactory *matFactory, const GmLogCategory &logger)
	Constructor.

virtual	~GmpBar ()
	Destructor.

virtual const QVariantMap *	physicsMetaDataMap ()
	Returns a reference for the single Hydraulics attribute map, built when the function is called for the first time.

virtual double	fillBuMatrix (const GmElement e, const GmShape shape, const GmVector &ncoord, const GmMatrix &X, const GmVector &N, const GmMatrix &J, GmMatrix &Bp)
	Given a point 'ncood', the element coordinate matrix 'X', the point shape functions 'N' and the transformation Jacobian 'J', fills the matrix with cartesian partial derivatives Bu using the provided shape function and returns the scaled jacobian determinant.

virtual FemResultType	fillElementData (const GmElement *e, GmpFemMatrixSet &elemMatrices, GmpFemVectorSet &elemVectors)
	Fills the element internal force and stiffness.

virtual bool	calcDerivedResults (bool nonLinearSolver)
	Recovers per element stresses for bar elements, storing the results in an element attribute.

virtual void	updateNodalCoordinates (const GmElement *e, GmMatrix &Xe, const GmVector &ue) const
	Updates the nodal coordinates using nodal displacements Xen = Xe + ue.

Public Member Functions inherited from GmpMechanicalPhysics
	GmpMechanicalPhysics (const char pluginType, GmSimulationData simulation, QString id, QString description, const GmpFemPhysicsCommonMaterialFactory *matFactory, const GmLogCategory &logger)
	Constructor. Will be called by the plugin loading code.

virtual	~GmpMechanicalPhysics ()
	Destructor.

virtual const char *	pluginName () const

virtual const char *	pluginType () const

virtual bool	supportsStateDumping ()

virtual unsigned	stress_state (void) const
	Returns the number of stress components.

virtual bool	fixedNodalForcesBc (QVector< int > &nodes, QVector< int > &dof, QVector< double > &values) const
	See comments on base class. Fills vectors with prescribed nodal concentrated forces.

virtual bool	fixedNodalDofsBc (QVector< int > &nodes, QVector< int > &dof, QVector< double > &values, bool *constantValues) const
	See comments on base class. Fills vectors with prescribed node displacements.

virtual FemResultType	fillElementDataForBc (const GmElement e, const GmBoundaryCondition bc, int bcIndex, int bcListIndex, int border, GmpFemMatrixSet &elemMatrices, GmpFemVectorSet &elemVectors)
	Fills the element stiffness matrix elemK and/or the force vector elemF for element 'e', taking into account pressure load and/or point generation boundary conditions, as indicated by the bc parameter.

virtual FemResultType	fillElementDataForLoads (const GmElement *e, int loadId, GmpFemVectorSet &elemVectors)

virtual FemResultType	fillElementDataPressBc (const GmElement e, const GmBoundaryCondition bc, int bcIndex, int bcListIndex, int border, GmMatrix &elemMat, GmVector &elemVec)
	calc nodal equivalent force vector due uniforme pressure load.

virtual FemResultType	fillElementDataHydPressBc (const GmElement e, const GmBoundaryCondition bc, int bcIndex, int bcListIndex, int border, GmMatrix &elemMat, GmVector &elemVec)
	calc nodal equivalent force vector due hydraulic pressure load. Information is provided from two vertical reference coordinates with the respective

virtual FemResultType	fillElementDataWaterSheepPressBc (const GmElement e, const GmBoundaryCondition bc, int bcIndex, int bcListIndex, int border, GmMatrix &elemMat, GmVector &elemVec)
	calc nodal equivalent force vector due water sheet pressure load. Information is provided from reference coordinates to level of water with the respective

virtual FemResultType	fillContactData (const GmContactBoundaryCondition *cbc, int bcIndex1, int bcIndex2, GmMatrixDof &dofMap, GmpFemMatrixSet &matrixSet, GmpFemVectorSet &vecSet)
	Fills the contact boundary contribution.

virtual bool	calcMaterialDerivedResults () const
	The virtual function used by calcDerivedResults() to effectively calculate gauss attributes required by the Material.

void	fillElementDisplacements (const GmElement *e, GmVector &ue)
	Given an element, fills the vector 'ue' with nodal displacements. The vector should have size equal to n * d where n is the number of element nodes and d is the node dimension.

void	fillElementThermalIncrement (const GmElement *e, GmVector &dTe)
	The virtual function to fill the nodal thermal increment.

virtual double	axisymmetricFactor (const GmElement *e, const GmMatrix &X, const GmVector &N) const
	Returns the factor that should be applied when using axis symetric elements. 1.0 for other etypes.

virtual bool	isPlaneStress ()
	Returns the factor that should be applied when using axis symetric elements. 1.0 for other etypes.

virtual bool	isAxisymmetric ()
	Returns TRUE only for axisymmetric models.

GmpMechanicPoint *	mechanicPoint ()
	Returns the physics mechanical material point.

virtual bool	evaluatesThermalStrain (const GmElement *e, GmVector &strainT, GmVector &NT, GmVector &dT, double alpha) const
	Returns The thermal strain.

GmMatrix &	dep ()
	Returns a reference to the physics constitutive tangent matrix.

Protected Member Functions
virtual bool	checkAndLoadAttributeAccessors (LuaTable &nodeTable, LuaTable &cellTable, LuaTable &gaussTable)
	Reimplementation of the common function to init the _mechanicPoint structure.

Private Member Functions
double	calcElementStress (GmElement *e)
	Calculates the bar internal stress.

Additional Inherited Members
Protected Attributes inherited from GmpMechanicalPhysics
GmpMechanicPoint *	_mechanicPoint
	Access to mechanical material point.

GmTLS< GmMatrix, true >	_Dep
	Constitutive tangent matrix (2 x 2)

bool	_setInitialCond
	Sets the initial conditions required by the physics.

Detailed Description

Basic class for the standard stress bar physics plugin object.

This physics plugin calculates deformations and stress values for bars using the model described by Felippa.

Parameters:

stateVars: Optional. If missing, calculated results will be placed in state variables named 'u', which should be a vector state variable with dimension equal to the mesh node dimension
properties: Optional. If missing, physics routines will look for element properties in the following standard names:
- A for bar cross section area

Member Enumeration Documentation

◆ barPropertyIds

enum GmpBar::barPropertyIds

IDs for physics element properties.

Enumerator
AREA_ID	Id for retrieving the accessor of cross section area.
NUM_PROPER_IDS	The number of property ids above.

Member Function Documentation

◆ calcDerivedResults()

bool GmpBar::calcDerivedResults ( bool nonLinearSolver )

virtual

Recovers per element stresses for bar elements, storing the results in an element attribute.

Reimplemented from GmpMechanicalPhysics.

◆ calcElementStress()

double GmpBar::calcElementStress ( GmElement * e )

private

Calculates the bar internal stress.

To compute the internal stress we need only to recover the bar elongation d. and remember that the internal force is equal to (E * A * d)/L. The computation below follows Felippa, equation 3.19 (page 3-8) and the formulation in figure 21.9 (page 21-10), remembering that the stress is equal to the internal force divided by A

◆ fillBuMatrix()

double GmpBar::fillBuMatrix	(	const GmElement *	e,
		const GmShape *	shape,
		const GmVector &	ncoord,
		const GmMatrix &	X,
		const GmVector &	N,
		const GmMatrix &	J,
		GmMatrix &	Bu )

virtual

Given a point 'ncood', the element coordinate matrix 'X', the point shape functions 'N' and the transformation Jacobian 'J', fills the matrix with cartesian partial derivatives Bu using the provided shape function and returns the scaled jacobian determinant.

The shape function given as parameter is the shape function that should be used to calculate the partial derivatives. It will be a linear function in case of iso-parametric elements and the element shape function otherwise.

Matrices J, X and N should have been calculated using the element shape function even in an iso-parametric setting.

Implements GmpMechanicalPhysics.

◆ fillElementData()

GmpFemPhysics::FemResultType GmpBar::fillElementData	(	const GmElement *	e,
		GmpFemMatrixSet &	elemMatrices,
		GmpFemVectorSet &	elemVectors )

virtual

Fills the element internal force and stiffness.

Implements GmpMechanicalPhysics.

◆ physicsMetaDataMap()

const QVariantMap * GmpBar::physicsMetaDataMap ( )

virtual

Returns a reference for the single Hydraulics attribute map, built when the function is called for the first time.

Reimplemented from GmpMechanicalPhysics.

◆ updateNodalCoordinates()

void GmpBar::updateNodalCoordinates	(	const GmElement *	e,
		GmMatrix &	Xe,
		const GmVector &	ue ) const

virtual

Updates the nodal coordinates using nodal displacements Xen = Xe + ue.

Updates the nodal coordinates Xen = Xe + ue.

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

inc/gmpBar.h
src/gmpBar.cpp

Public Types

Public Member Functions

Protected Member Functions

Private Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ barPropertyIds

Member Function Documentation

◆ calcDerivedResults()

◆ calcElementStress()

◆ fillBuMatrix()

◆ fillElementData()

◆ physicsMetaDataMap()

◆ updateNodalCoordinates()