Basic class for solving Non linear FEM problems. More...

#include <gmpFemNonLinearSolver.h>

Inheritance diagram for GmpFemNonLinearSolver:

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Collaboration diagram for GmpFemNonLinearSolver:

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Public Member Functions
	GmpFemNonLinearSolver (GmElementMesh , GmSimulationData , const QList< GmpFemPhysics * > &, GmNumSolver *, const GmpFemSolverOptions &, const GmLogCategory &)
	Constructor. More...

virtual	~GmpFemNonLinearSolver ()
	Destructor.

void	enableFastUpdate (bool mode)
	Sets fastUpdate option.

virtual bool	init ()
	Initializes the solver and allocates the needed memory. More...

virtual bool	step (double dt, double newt, bool conv, double err, int niter, bool eval)
	Defines the Step solver. More...

virtual bool	geostatic ()
	Defines the Geostatic step. More...

virtual bool	pos ()
	Run pos-procisng algorithms. More...

virtual bool	crackDetection ()
	Verify potential crack roots. More...

virtual bool	crackPropagation ()
	Check crack propagation. More...

virtual bool	updateBC (double dt, int iter, bool updateBc)
	Updates boundary conditions.

Public Member Functions inherited from GmpFemSolver
	GmpFemSolver (GmElementMesh mesh, GmSimulationData simulation, const QList< GmpFemPhysics * > &physics, GmNumSolver *solver, const GmpFemSolverOptions &options, const GmLogCategory &logger)
	Constructor. Expects to receive as parameters the mesh we are acting upon, the list of physics objects that will cooperate to create the global stiffness matrix and the solver used to solve the resulting linear system. More...

virtual	~GmpFemSolver (void)
	Destructor.

bool	run ()
	Execute the process. Returns true on success.

bool	calcLinearResidual (double rnorm, double maxNodeDiff, double *avgNodeDiff)
	When solving a non linear system by repeated iterations, this function aims to calculate the residual of the actual solution. More...

void	setMatrixCombinerObject (const GmpFemAssemblerMatrixCombiner *combiner)
	Sets the combiner object that will be used by the assembler to merge elemental data from multiple matrices (eg. C and K) into an equivalent matrix. More...

void	setVectorCombinerObject (const GmpFemAssemblerVectorCombiner *combiner)
	Sets the combiner objects that will be used by the assembler to merge elemental data from multiple vectors (eg. Fe and Fi) into an equivalent vector. More...

bool	update (int mode, QString &err)
	Informs the solver of an external change in model dofs, elements or BCs that must be forwarded to the assembler. See the documentation of GmpFemAssembler::update() for more details.

virtual bool	stateAboutToBeSaved (GmStateDump *state)

virtual bool	stateSaved (GmStateDump *state)

virtual bool	stateAboutToBeLoaded (GmStateDump *state)

virtual bool	stateLoaded (GmStateDump *state)
	Informs physics objects that a load operation was completed giving them an opportunity to adjust its state in case the loaded data is not exactly what the internal state needs to be. It will also call derivedResults() so that previous results can be recovered. In that call, the nonLinearSolver parameter is obtained from the stateLoadedCalcDerivedResultsNonLinear() virtual function.

Public Member Functions inherited from QObject
virtual const QMetaObject *	metaObject () const const

virtual void *	qt_metacast (const char *)

virtual int	qt_metacall (QMetaObject::Call, int, void **)

	QObject (QObject *parent)

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

QString	objectName () const const

void	setObjectName (const QString &name)

bool	isWidgetType () const const

bool	isWindowType () const const

bool	signalsBlocked () const const

bool	blockSignals (bool block)

QThread *	thread () const const

void	moveToThread (QThread *targetThread)

int	startTimer (int interval, Qt::TimerType timerType)

int	startTimer (std::chrono::milliseconds time, Qt::TimerType timerType)

void	killTimer (int id)

T	findChild (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegExp &regExp, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const

const QObjectList &	children () const const

void	setParent (QObject *parent)

void	installEventFilter (QObject *filterObj)

void	removeEventFilter (QObject *obj)

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const const

bool	disconnect (const char signal, const QObject receiver, const char *method) const const

bool	disconnect (const QObject receiver, const char method) const const

void	dumpObjectTree ()

void	dumpObjectInfo ()

void	dumpObjectTree () const const

void	dumpObjectInfo () const const

bool	setProperty (const char *name, const QVariant &value)

QVariant	property (const char *name) const const

QList< QByteArray >	dynamicPropertyNames () const const

void	destroyed (QObject *obj)

void	objectNameChanged (const QString &objectName)

QObject *	parent () const const

bool	inherits (const char *className) const const

void	deleteLater ()

Protected Member Functions
virtual bool	initElementSets (GmNumSolver *solver)
	Allocates and init matrices and vectors. More...

virtual void	setElementSets (bool, bool, bool, bool, bool)
	Enable or disable matrices and vectors. More...

virtual bool	isNonLinear () const
	Checks nonlinear analysis. More...

virtual bool	isTransient () const
	Checks transient analysis.

virtual bool	convergence () const
	Checks convergence. More...

virtual bool	convergenceNew () const

virtual void	saveInternalForceAttributes ()
	Save internal force attibutes such as Reaction and Volume flux. More...

virtual void	update ()
	Updates state values. More...

virtual void	restore ()
	Restore values. More...

virtual void	setLoad ()
	Sets the current load factor (l + dl) More...

virtual void	setTime ()
	Sets the current time (t + dt) More...

virtual void	setState ()
	Sets the current state (_x + _dx) More...

virtual double	loadPredictor ()
	Load predictor strategies. More...

virtual double	loadCorrector ()
	Load corrector strategy. More...

virtual double	calcLocalError (GmVector x, GmVector dx)
	Computes the local error.

virtual bool	stepStaticNonlinear (double, double *newt)
	Implementation of nonlinear static solver. More...

virtual GmpFemPhysics::FemResultType	updateResidualForceAndStiffnessMatrix (double l)
	Updates the stiffness matrix. More...

virtual GmpFemPhysics::FemResultType	fillStiffnessMatrixBroyden ()
	Evaluates the stiffness matrix using Broyden's method. More...

virtual GmpFemPhysics::FemResultType	fillStiffnessMatrixBFGS ()
	Evaluates the stiffness matrix using BFGS method. More...

bool	solveLinearSystem (GmSolverMatrix *Keq, GmVector &Feq, GmVector &x)
	Solves the linear system K.x = f. More...

virtual bool	stepTransientNonLinear (double, double *newt)
	Implementation of nonlinear transient solver. More...

virtual bool	stepTransientNonlinearAut (double, double *newt)
	Implementation of nonlinear transient solver based on Sloan.

GmpFemPhysics::FemResultType	prepareTransientSystem (double dt)
	Fills the matrix K and the vector Fe with the linear system resulting from applying an implicit schema to the transient temperature equation. More...

GmpFemPhysics::FemResultType	prepareTransientSystemPredict (double dt)

void	vectorTreatment (GmVector &fint)
	Computes the local error.

bool	timeIncrementAdjustment (double dt, int iter, GmVector &X1, GmVector &X0)

virtual bool	addStateItemsToGroup (GmStateDump *state, int groupId)
	Adds to 'state' the data items that should be saved for this FEM process. Should probably be overriden by derived classes to add their own requirements. More...

virtual bool	fillStateControlMapData (QVariantMap *map)
	Method called for filling the state dump control regustered in addStateItemsToGroup()

virtual bool	stateControlMapDataLoaded (QVariantMap *map)
	Method called when the state dump control registered in addStateItemsToGroup() has been loaded.

virtual bool	stateLoadedCalcDerivedResultsNonLinear ()
	Returns the value of the "nonLinearSolver" parameter that will be passed to the calcDerivedResults() call from the standard implementation of stateLoaded()

virtual bool	fillStateControlMapDataStaticSolver (QVariantMap *map)
	Virtual method to fill the map with the needed continuation method data.

virtual bool	fillStateControlMapDataTransientSolver (QVariantMap *map)
	Virtual method to fill the map with the needed transient solver data.

Protected Member Functions inherited from GmpFemSolver
bool	initSolver (GmpFemAssembler::FixedDofMode assemblerMode, bool assemblerReverseMapping, bool enableFastUpdate)
	Basic implementation of the init function receiving as parameters the configuration options that are sent to the assembler. More...

virtual bool	initResultAttributes (QString prefix)
	Helpper function used to register the set of result attributes managed by the fem solver. To avoid name clashes, all of them should prepend the given prefix (usually "fem") to the attribute name. More...

virtual bool	cleanup ()
	Dealocates memory and sets allocated resources to NULL. As a convenience, returns false.

GmpFemPhysics::FemResultType	prepareMatrices (bool skipFixedBcs=false)
	Auxilliary function used to fill the K, and f matrices / vectors along with any other matrices/vectors stored in _matSet and _vecSet. More...

GmpFemPhysics::FemResultType	saveElementData (int iter)
	Auxilliary function used to save to the configured file data from the set of element matrices and vectors. In this process, physics are called again to fill element matrices and vectors (according to the active matrices and vectors in _vecSet and _matSet) but the results are NOT added to the global matrices.

bool	solveLinearSystem (bool xFilled)
	Solves the linear system K.x = f taking K and f from the single equivalent matrix/vector or from matrix K / vector f, depending on the assembler configuration. Results are saved in _x. Prints the used matrices / result as configured in _printOptions. More...

double	timeConvert (double val)
	Auxiliary function created for being used by derived classes that converts a time value given in the current simulation time unit and returns that value converted to the physics expected unit.

GmpFemPhysics::FemResultType	traverseElements ()
	Fills the stiffness matrix _K and the force vector _f by traversing elements asking physics for the local element matrix / force vector. More...

GmpFemPhysics::FemResultType	traverseBoundaryElements ()
	Simillar to traverseElements(), this function steps through each element that belongs to an edge or face boundary condition, asking physics for additional contributions to the stiffness matrix _K and the force vector _f.

GmpFemPhysics::FemResultType	traverseExternalLoads ()
	Simillar to traverseElements(), this function steps through each element associated to an external load force, asking physics for additional contributions to the force vector _f.

GmpFemPhysics::FemResultType	traverseContactBoundaries ()
	Simillar to traverseElements(), this function steps through each possible contact from the given contact boundary conditions and asks the physics for additional contributions to the solver matrices and vectors. This is different from the other element based loops since the returned matrices are not restricted to a single element, but can combine nodes from several ones.

GmpFemPhysics::FemResultType	traverseElementsForSaving (FILE *f, int iter)
	Similar to traverseElements() but instead of adding the elements to the assembler, saves the element data to the given file. More...

GmpFemPhysics::FemResultType	fillElementData (const GmElement *e, int physIndex)
	Helper function used by traverseElements() to get data for a single element calling phys->fillElementData()

GmpFemPhysics::FemResultType	fillElementBoundaryData (const GmElement e, int physIndex, const GmBoundaryCondition bc, int bcIndex, int bcListIndex, int border, const GmCellBoundary *b)
	Helper function used by traverseBoundaryElements() to get data for a single element calling phys->fillElementDataForBc()

GmpFemPhysics::FemResultType	fillContactData (GmMatrixDof &localDofMap, const GmContactBoundaryCondition *cbc, int physIndex, int index1, int index2)
	Helper function used by traverseContactBoundaries() to get data for a single contact pair calling phys->fillContactData()

bool	addFixedForces ()
	Adds fixed nodal forces, as seen by each physics, to the global vector _f.

virtual bool	applyFixedBoundaryConditions (int *numFixed)
	Apply Dirichlet (fixed) boundary conditions to the global equation system. More...

bool	collectFixedBcs (QVector< bool > &fixedRows, QVector< double > &fixedValues, QList< int > &dofIndex)
	Fills the set of vectors received as parameters with the complete set of fixed boundary conditions, as seen by the full set of physics in use, checking for possible conflicts in conditions. More...

virtual void	collectGlobalContactPairs (const GmContactBoundaryCondition *cbc, QList< QPair< int, int > > &contactPairs)
	Global search rule used to define contact surfaces. Should be implemented to allow global contact conditions, filling contactPairs with the indices in cbc of the in-contact surfaces.

void	printElementData (const GmElement e, int ndof, const int dofMapping, const GmpFemPhysics p, const GmBoundaryCondition bc=NULL, const GmContactBoundaryCondition *cbc=NULL, int loadId1=-1, int id2=-1)
	Print element dof mapping, local matrices and vectors depending on the current solver print options. More...

void	printGlobalData (bool linear)
	Print global matrices and vectors, either after assembling or before solving the linear system.

Protected Member Functions inherited from QObject
QObject *	sender () const const

int	senderSignalIndex () const const

int	receivers (const char *signal) const const

bool	isSignalConnected (const QMetaMethod &signal) const const

virtual void	timerEvent (QTimerEvent *event)

virtual void	childEvent (QChildEvent *event)

virtual void	customEvent (QEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	disconnectNotify (const QMetaMethod &signal)

Protected Attributes
int	_dofIndex

double	_dl

double	_dl0

double	_ddl

double	_arc

double	_Lold

double	_tin

double	_dt

double	_oldIter

double	_hlast

int	_It

GmVector	_v

GmVector	_a

GmVector	_dx

GmVector	_dv

GmVector	_xold

GmVector	_vold

GmVector	_dxt

GmVector	_ddx

GmVector	_ddv

GmVector	_ddxt

GmVector	_ddxr

GmVector	_FeGs

GmVector	_feLcs

GmVector	_fiLcs

GmVector	_r0

QList< int >	_fixedDof

bool	_fastUpdate

Protected Attributes inherited from GmpFemSolver
int	_solverId
	A unique index for this solver object used by the result attribute auto prefix feature.

GmElementMesh *	_mesh
	Mesh with the nodes and cells data.

GmSimulationData *	_simulation
	Simulation Data.

QList< GmpFemPhysics * >	_physicsList
	List of physics that will cooperate to generate the system response.

GmNumSolver *	_solver
	Numeric solver that will be used to solve the set of linear equations.

const GmLogCategory &	_logger
	Logger for eventual messages.

QMutex	_printMutex
	Mutex for serializing calls to printElementData when traversing elements in parallel.

bool	_enabledWarn [NumDisabledWarnings]
	Vector storing which warnings are enabled.

GmpFemSolverOptions	_solverOptions
	The set of solver options.

UnitConverter *	_timeConv
	Unit converter from the currentTimeUnit to the physics unit. Used only by derived solvers.

GmpFemAssembler *	_assembler
	Assembler used for adding element contributions to vectors and matrices.

const GmpFemAssemblerMatrixCombiner *	_matCombiner
	The combiner object used with the assembler to merge data from multiple elemental matrices.

const GmpFemAssemblerVectorCombiner *	_vecCombiner
	The combiner object used with the assembler to merge data from multiple elemental vectors.

GmpFemVectorSet	_vecSet
	Set of global/element vectors filled by physics.

GmpFemMatrixSet	_matSet
	Set of global/element matrices filled by physics.

GmVector	_x
	State vector.

GmVector	_r
	Residual vector.

unsigned	_preCount
	Number of times that prepareMatrices() was called.

unsigned	_runCount
	Number of times that run() was called.

QVariantMap	_controlMap
	Variant map used for storing dump control data for the solver.

int	_iterResAttr
	The registered id for the "fem.iter" result attribute.

int	_iterResErrAttr
	The registered id for the "fem.iterErr" result attribute.

Private Attributes
bool	_nonlinear
	Is this a non linear problem ?

Additional Inherited Members
Public Types inherited from GmpFemSolver
enum	PrintOptions { PRINT_ELEMENT_MATRICES = 0x001, PRINT_ELEMENT_VECTORS = 0x002, PRINT_ELEMENT_DOF_MAPPING = 0x004, PRINT_EQ_MATRIX = 0x008, PRINT_EQ_VECTOR = 0x010, PRINT_GLOBAL_MATRICES = 0x020, PRINT_GLOBAL_VECTORS = 0x040, PRINT_LINEAR_MATRIX = 0x080, PRINT_LINEAR_VECTOR = 0x100, PRINT_LINEAR_RESULT = 0x200 }
	Flag options used to compose the printOptions constructor parameter. More...

Static Public Member Functions inherited from QObject
QString	tr (const char sourceText, const char disambiguation, int n)

QString	trUtf8 (const char sourceText, const char disambiguation, int n)

QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

Protected Types inherited from GmpFemSolver
enum	DisabledWarnings { PrescribedForceForInvalidDof, PrescribedForceForFixedDof, FixedBcForInvalidDof, ConflictingFixedBcValue, NumDisabledWarnings }
	Enums describing the set of warnings that can be disabled by simulation options. More...

Protected Slots inherited from GmpFemSolver
virtual void	meshChanged ()
	Slot called when the underlying mesh has been changed. More...

Properties inherited from QObject
	objectName

Detailed Description

Basic class for solving Non linear FEM problems.

Constructor & Destructor Documentation

◆ GmpFemNonLinearSolver()

GmpFemNonLinearSolver::GmpFemNonLinearSolver	(	GmElementMesh *	mesh,
		GmSimulationData *	simulation,
		const QList< GmpFemPhysics * > &	physics,
		GmNumSolver *	solver,
		const GmpFemSolverOptions &	options,
		const GmLogCategory &	logger
	)

Constructor.

Constructor. Expects to receive as parameters the mesh we are acting upon, the list of physics objects that will cooperate to create the global stiffness matrix and the solver used to solve the resulting linear system.

The fastUpdate parameter should be set to False. This option is required by the XfemSolver

The options parameter contains the set of parameters sent to the solver.

Member Function Documentation

◆ addStateItemsToGroup()

bool GmpFemNonLinearSolver::addStateItemsToGroup	(	GmStateDump *	state,
		int	groupId
	)

protectedvirtual

Adds to 'state' the data items that should be saved for this FEM process. Should probably be overriden by derived classes to add their own requirements.

Auxiliar variant map dump item that notifies us for loading and saving data to the map

< Our "father" solver object

Reimplemented from GmpFemSolver.

◆ convergence()

bool GmpFemNonLinearSolver::convergence ( ) const

protectedvirtual

Checks convergence.

Checks the analysis convergence.

◆ crackDetection()

bool GmpFemNonLinearSolver::crackDetection ( )

virtual

Verify potential crack roots.

Crack detection verify potential crack roots The new crack starts once the tensile damage criterion is reached.

◆ crackPropagation()

bool GmpFemNonLinearSolver::crackPropagation ( )

virtual

Check crack propagation.

Verify the crack propagation These procedure determines new potential crack tips in the current crack root.

◆ fillStiffnessMatrixBFGS()

GmpFemPhysics::FemResultType GmpFemNonLinearSolver::fillStiffnessMatrixBFGS ( )

protectedvirtual

Evaluates the stiffness matrix using BFGS method.

Evaluates stiffness matrix using BFGS method and internal forces.

◆ fillStiffnessMatrixBroyden()

GmpFemPhysics::FemResultType GmpFemNonLinearSolver::fillStiffnessMatrixBroyden ( )

protectedvirtual

Evaluates the stiffness matrix using Broyden's method.

Evaluates stiffness matrix using Broyden's method and internal forces.

◆ geostatic()

bool GmpFemNonLinearSolver::geostatic ( )

virtual

Defines the Geostatic step.

The geostatic implementation (femNLSolver.geostatic)

   This function manages the geostatic process

◆ init()

bool GmpFemNonLinearSolver::init ( )

virtual

Initializes the solver and allocates the needed memory.

Prepares the solver for assembling matrices by creating the assembler object and allocating the needed memory. This operations only needs to be done once if the solver is used in a loop.

Reimplemented from GmpFemSolver.

◆ initElementSets()

bool GmpFemNonLinearSolver::initElementSets ( GmNumSolver * solver )

protectedvirtual

Allocates and init matrices and vectors.

Reimplements GmpFemSolver::initElementSets() to allocate and init the matrices for static and transient solver. Static solver adopts MATRIX_MATCH_MODE: One global matrix per configured local matrix.

Transient solver considers MATRIX_BOTH_MODE: An equivalent global matrix + one global per configured local matrix In addition, It includes the C matrix in the set of calculated matrices by physics objects

Reimplemented from GmpFemSolver.

◆ isNonLinear()

bool GmpFemNonLinearSolver::isNonLinear ( ) const

protectedvirtual

Checks nonlinear analysis.

Checks for nonlinear step analysis.

◆ loadCorrector()

double GmpFemNonLinearSolver::loadCorrector ( )

protectedvirtual

Load corrector strategy.

Computes the load factor corrector according to a specific continuation method, such as: load control, cylindric arc length, dissipated energy, etc.

◆ loadPredictor()

double GmpFemNonLinearSolver::loadPredictor ( )

protectedvirtual

Load predictor strategies.

Estimates the new load factor according to a specific continuation method, such as: load control, cylindric arc length, dissipated energy, etc.

◆ pos()

bool GmpFemNonLinearSolver::pos ( )

virtual

Run pos-procisng algorithms.

Run pos-processing algorithms. This method runs pos-processing algorithms such as,.

crack tracking algorithm

◆ prepareTransientSystem()

GmpFemPhysics::FemResultType GmpFemNonLinearSolver::prepareTransientSystem ( double dt )

protected

Fills the matrix K and the vector Fe with the linear system resulting from applying an implicit schema to the transient temperature equation.

Implicit schema: (C + dt*K) * x_n+1 = C * x_n + dt * f_n+1 |-—K-—| |-x-| |------—Fe-----—|

If the solver is non linear, uses _oldx instead of _x for the x_n vector

An auxiliar class for combining data from matrices C and K into an equivalent matrix that will be used by the assembler

Constructor. Automatically registers the combiner on the solver

Destructor. Automatically removes the combiner from the solver

The C + dt * K term

Enable localMatricesToGlobalVectorContribution() storing returned values in the equivalent global vector

The C * x_n term

◆ prepareTransientSystemPredict()

GmpFemPhysics::FemResultType GmpFemNonLinearSolver::prepareTransientSystemPredict ( double dt )

protected

An auxiliar class for combining data from matrices C and K into an equivalent matrix that will be used by the assembler

Constructor. Automatically registers the combiner on the solver

Destructor. Automatically removes the combiner from the solver

The C + dt * K term

Enable localMatricesToGlobalVectorContribution() storing returned values in the equivalent global vector

The C * x_n term

◆ restore()

void GmpFemNonLinearSolver::restore ( )

protectedvirtual

Restore values.

Restore the load factor, the time and the current state (_x)

◆ saveInternalForceAttributes()

void GmpFemNonLinearSolver::saveInternalForceAttributes ( )

protectedvirtual

Save internal force attibutes such as Reaction and Volume flux.

Saves internal force attibutes such as Reaction and Volume flux.

◆ setElementSets()

void GmpFemNonLinearSolver::setElementSets	(	bool	Fe,
		bool	Fi,
		bool	K,
		bool	C,
		bool	M
	)

protectedvirtual

Enable or disable matrices and vectors.

Enables or disables the required matrices or vectors.

◆ setLoad()

void GmpFemNonLinearSolver::setLoad ( )

protectedvirtual

Sets the current load factor (l + dl)

Sets the current load factor: l_n+1 = l_n + dl.

◆ setState()

void GmpFemNonLinearSolver::setState ( )

protectedvirtual

Sets the current state (_x + _dx)

Sets the current state variables: x_n+1 = x_n + dx.

◆ setTime()

void GmpFemNonLinearSolver::setTime ( )

protectedvirtual

Sets the current time (t + dt)

Sets the current time: t_n+1 = t_n + dt.

◆ solveLinearSystem()

bool GmpFemNonLinearSolver::solveLinearSystem	(	GmSolverMatrix *	Keq,
		GmVector &	Feq,
		GmVector &	x
	)

protected

Solves the linear system K.x = f.

Solves the linear system K.x = f taking Keq and Feq. Results are saved in _x. Prints the used matrices / result as configured in _printOptions.

◆ step()

bool GmpFemNonLinearSolver::step	(	double	dt,
		double *	newt,
		bool *	conv,
		double *	err,
		int *	niter,
		bool	eval
	)

virtual

Defines the Step solver.

Defines the type of solver: static nonlinear solver or transient nonlinear solver. This operation is called for every analysis step.

◆ stepStaticNonlinear()

bool GmpFemNonLinearSolver::stepStaticNonlinear	(	double	step,
		double *	newt
	)

protectedvirtual

Implementation of nonlinear static solver.

The step static non linear solver implementation This function expects to receive as parameters the current step (step) And returns the current load factor (newt)

◆ stepTransientNonLinear()

bool GmpFemNonLinearSolver::stepTransientNonLinear	(	double	dt,
		double *	newt
	)

protectedvirtual

Implementation of nonlinear transient solver.

The step transient non linear solver implementation.

   This function expects to receive as parameters the current time increment (dt)
   And returns the new time increment (newt)

◆ update()

void GmpFemNonLinearSolver::update ( )

protectedvirtual

Updates state values.

Updates the load factor, the time and the current state of all values.

◆ updateResidualForceAndStiffnessMatrix()

GmpFemPhysics::FemResultType GmpFemNonLinearSolver::updateResidualForceAndStiffnessMatrix ( double l )

protectedvirtual

Updates the stiffness matrix.

Updates the internal force and stiffness matrix for static nonlinear solver.

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

inc/gmpFemNonLinearSolver.h
src/gmpFemNonLinearSolver.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ GmpFemNonLinearSolver()

Member Function Documentation

◆ addStateItemsToGroup()

◆ convergence()

◆ crackDetection()

◆ crackPropagation()

◆ fillStiffnessMatrixBFGS()

◆ fillStiffnessMatrixBroyden()

◆ geostatic()

◆ init()

◆ initElementSets()

◆ isNonLinear()

◆ loadCorrector()

◆ loadPredictor()

◆ pos()

◆ prepareTransientSystem()

◆ prepareTransientSystemPredict()

◆ restore()

◆ saveInternalForceAttributes()

◆ setElementSets()

◆ setLoad()

◆ setState()

◆ setTime()

◆ solveLinearSystem()

◆ step()

◆ stepStaticNonlinear()

◆ stepTransientNonLinear()

◆ update()

◆ updateResidualForceAndStiffnessMatrix()