#include <nrsolver.h>

Inheritance diagram for oofem::NRSolver:

Collaboration diagram for oofem::NRSolver:

Public Member Functions
	NRSolver (Domain d, EngngModel m)
virtual	~NRSolver ()
ConvergedReason	solve (SparseMtrx &k, FloatArray &R, FloatArray R0, FloatArray &X, FloatArray &dX, FloatArray &F, const FloatArray &internalForcesEBENorm, double &l, referenceLoadInputModeType rlm, int &nite, TimeStep ) override
void	printState (FILE *outputStream) override
void	initializeFrom (InputRecord &ir) override
const char *	giveClassName () const override
virtual const char *	giveInputRecordName () const
void	setDomain (Domain *d) override
void	reinitialize () override
SparseLinearSystemNM *	giveLinearSolver () override
Public Member Functions inherited from oofem::SparseNonLinearSystemNM
	SparseNonLinearSystemNM (Domain d, EngngModel m)
	Constructor.
virtual	~SparseNonLinearSystemNM ()
	Destructor.
virtual double	giveCurrentStepLength ()
virtual void	setStepLength (double s)
virtual bool	referenceLoad () const
void	initializeFrom (InputRecord &ir) override
virtual void	convertPertMap ()
virtual void	applyPerturbation (FloatArray *displacement)
std::string	errorInfo (const char *func) const
	Error printing helper.
Public Member Functions inherited from oofem::NumericalMethod
	NumericalMethod (Domain d, EngngModel m)
virtual	~NumericalMethod ()
	Destructor.
EngngModel *	giveEngngModel ()
virtual void	saveContext (DataStream &stream, ContextMode mode)
virtual void	restoreContext (DataStream &stream, ContextMode mode)

Protected Types
enum	nrsolver_ModeType { nrsolverModifiedNRM , nrsolverFullNRM , nrsolverAccelNRM }

Protected Member Functions
LineSearchNM *	giveLineSearchSolver ()
	Constructs and returns a line search solver.
void	initPrescribedEqs ()
	Initiates prescribed equations.
void	applyConstraintsToStiffness (SparseMtrx &k)
void	applyConstraintsToLoadIncrement (int nite, const SparseMtrx &k, FloatArray &R, referenceLoadInputModeType rlm, TimeStep *tStep)
bool	checkConvergence (FloatArray &RT, FloatArray &F, FloatArray &rhs, FloatArray &ddX, FloatArray &X, double RRT, const FloatArray &internalForcesEBENorm, int nite, bool &errorOutOfRange)

Protected Attributes
int	nsmax
int	minIterations
double	minStepLength
nrsolver_ModeType	NR_Mode
nrsolver_ModeType	NR_OldMode
int	NR_ModeTick
int	MANRMSteps
std ::unique_ptr< SparseLinearSystemNM >	linSolver
	linear system solver
LinSystSolverType	solverType
	linear system solver ID
SparseMtrx::SparseMtrxVersionType	smConstraintVersion
	sparse matrix version, used to control constrains application to stiffness
int	numberOfPrescribedDofs
	number of prescribed displacement
bool	prescribedDofsFlag
IntArray	prescribedDofs
	Array of pairs identifying prescribed dofs (node, dof).
FloatArray	prescribedDofsValues
	Array of prescribed values.
int	prescribedDisplacementTF
	Load Time Function of prescribed values.
IntArray	prescribedEqs
	Array of prescribed equations.
bool	prescribedEqsInitFlag
	Flag indicating that prescribedEqs were initialized.
FloatArray	lastReactions
	Computed reactions. They are stored in order to print them in printState method.
bool	lsFlag
	Flag indicating whether to use line-search.
std ::unique_ptr< LineSearchNM >	linesearchSolver
	Line search solver.
bool	mCalcStiffBeforeRes
	Flag indicating if the stiffness should be evaluated before the residual in the first iteration.
bool	constrainedNRFlag
	Flag indicating whether to use constrained Newton.
double	constrainedNRalpha
	Scale factor for dX, dX_new = alpha * dX.
int	constrainedNRminiter
	Minimum number of iterations before constraint is activated.
FloatArray	rtolf
	Relative unbalanced force tolerance for each group.
FloatArray	rtold
	Relative iterative displacement change tolerance for each group.
FloatArray	forceErrVec
FloatArray	forceErrVecOld
bool	solutionDependentExternalForcesFlag
	Solution dependent external forces - updating then each NR iteration.
std ::map< int, double >	dg_forceScale
	Optional user supplied scale of forces used in convergence check.
double	maxIncAllowed
Protected Attributes inherited from oofem::SparseNonLinearSystemNM
double	deltaL =0.0
	Load level.
double	randPertAmplitude =0.0
	Amplitude of a random perturbation applied on the solution before the iteration process.
int	randSeed =0
bool	pert_init_needed
IntArray	igp_PertDmanDofSrcArray
FloatArray	igp_PertWeightArray
IntArray	igp_Map
FloatArray	igp_Weight
Protected Attributes inherited from oofem::NumericalMethod
Domain *	domain
	Pointer to domain.
EngngModel *	engngModel
	Pointer to engineering model.

Additional Inherited Members
Public Types inherited from oofem::SparseNonLinearSystemNM
enum	referenceLoadInputModeType { rlm_total =0 , rlm_incremental =1 }

Detailed Description

This class implements Newton-Raphson Method, derived from abstract NumericalMethod class for solving non-linear problems. Except the traditional load control, it also provides direct displacement control without requiring BC applied, so that the equation renumbering is not required when combining arc-length and Newton-Raphson solvers within a simulation.

The direct displacement control is achieved by adding a large number alpha to the corresponding diagonal member of K and replacing the right-hand side by alpha*prescribed_value. If alpha is very much larger than other stiffness coefficients then this alteration effectively replaces the corresponding equation by alpha*unknown_value = alpha*prescribed_value that is, the required condition, but the whole system remains symmetric and minimal changes are necessary in the computational sequence. The above artifice has been introduced by Payne and Irons.

Definition at line 97 of file nrsolver.h.

Member Enumeration Documentation

◆ nrsolver_ModeType

enum oofem::NRSolver::nrsolver_ModeType

protected

Enumerator
nrsolverModifiedNRM
nrsolverFullNRM
nrsolverAccelNRM

Definition at line 100 of file nrsolver.h.

Constructor & Destructor Documentation

◆ NRSolver()

oofem::NRSolver::NRSolver	(	Domain *	d,
		EngngModel *	m )

References initializeFrom(), NRSolver(), printState(), and solve().

Referenced by NRSolver(), and oofem::StaggeredSolver::StaggeredSolver().

◆ ~NRSolver()

oofem::NRSolver::~NRSolver ( )

virtual

Definition at line 98 of file nrsolver.C.

Member Function Documentation

◆ applyConstraintsToLoadIncrement()

void oofem::NRSolver::applyConstraintsToLoadIncrement	(	int	nite,
		const SparseMtrx &	k,
		FloatArray &	R,
		referenceLoadInputModeType	rlm,
		TimeStep *	tStep )

protected

Definition at line 512 of file nrsolver.C.

References oofem::FloatArray::at(), oofem::SparseMtrx::at(), oofem::PetscSparseMtrx::createVecGlobal(), oofem::diag(), oofem::NumericalMethod::engngModel, oofem::TimeStep::giveTargetTime(), oofem::TimeStep::giveTimeIncrement(), oofem::TimeStep::isTheFirstStep(), numberOfPrescribedDofs, prescribedDisplacementTF, prescribedDofsValues, prescribedEqs, oofem::SparseNonLinearSystemNM::rlm_total, solverType, and oofem::ST_Petsc.

Referenced by solve(), and oofem::StaggeredSolver::solve().

◆ applyConstraintsToStiffness()

void oofem::NRSolver::applyConstraintsToStiffness ( SparseMtrx & k )

protected

Definition at line 468 of file nrsolver.C.

References oofem::SparseMtrx::at(), oofem::PetscSparseMtrx::createVecGlobal(), oofem::diag(), oofem::PetscSparseMtrx::giveMtrx(), oofem::SparseMtrx::giveVersion(), numberOfPrescribedDofs, prescribedEqs, and smConstraintVersion.

Referenced by solve(), and oofem::StaggeredSolver::solve().

◆ checkConvergence()

bool oofem::NRSolver::checkConvergence	(	FloatArray &	RT,
		FloatArray &	F,
		FloatArray &	rhs,
		FloatArray &	ddX,
		FloatArray &	X,
		double	RRT,
		const FloatArray &	internalForcesEBENorm,
		int	nite,
		bool &	errorOutOfRange )

protected

Determines whether or not the solution has reached convergence.

Returns: True if solution has converged, otherwise false.

Todo: This is almost always the case for displacement error. nrsolveR_ERROR_NORM_SMALL_NUM is no good.

Definition at line 594 of file nrsolver.C.

References oofem::__DofIDItemToString(), oofem::ParallelContext::accumulate(), oofem::FloatArray::at(), oofem::IntArray::at(), constrainedNRFlag, dg_forceScale, oofem::NumericalMethod::domain, oofem::Element_local, oofem::NumericalMethod::engngModel, forceErrVec, forceErrVecOld, oofem::FloatArray::giveSize(), oofem::ParallelContext::isLocal(), oofem::ParallelContext::localNorm(), oofem::macroScale, nrsolver_ERROR_NORM_SMALL_NUM, NRSOLVER_MAX_REL_ERROR_BOUND, OOFEM_LOG_INFO, oofem::FloatArray::resize(), rtold, rtolf, oofem::FloatArray::zero(), and oofem::IntArray::zero().

Referenced by oofem::DynamicRelaxationSolver::solve(), solve(), and oofem::StaggeredSolver::solve().

◆ giveClassName()

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

inlineoverridevirtual

Reimplemented from oofem::SparseNonLinearSystemNM.

Reimplemented in oofem::StaggeredSolver.

Definition at line 179 of file nrsolver.h.

◆ giveInputRecordName()

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

inlinevirtual

Reimplemented in oofem::DynamicRelaxationSolver, and oofem::StaggeredSolver.

Definition at line 180 of file nrsolver.h.

References _IFT_NRSolver_Name.

◆ giveLinearSolver()

SparseLinearSystemNM * oofem::NRSolver::giveLinearSolver ( )

overridevirtual

Constructs (if necessary) and returns a linear solver. Public method because some problems require it for sensitivity analysis, etc. even for nonlinear problems (e.g. tangent relations in multiscale simulations).

Reimplemented from oofem::SparseNonLinearSystemNM.

Definition at line 406 of file nrsolver.C.

References oofem::classFactory, oofem::NumericalMethod::domain, oofem::NumericalMethod::engngModel, linSolver, OOFEM_ERROR, and solverType.

Referenced by initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ giveLineSearchSolver()

LineSearchNM * oofem::NRSolver::giveLineSearchSolver ( )

protected

Constructs and returns a line search solver.

Definition at line 424 of file nrsolver.C.

References oofem::NumericalMethod::domain, oofem::NumericalMethod::engngModel, and linesearchSolver.

Referenced by initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ initializeFrom()

void oofem::NRSolver::initializeFrom ( InputRecord & ir )

overridevirtual

Reimplemented from oofem::NumericalMethod.

Reimplemented in oofem::StaggeredSolver.

Definition at line 103 of file nrsolver.C.

References _IFT_NRSolver_calcstiffbeforeres, _IFT_NRSolver_constrainedNRminiter, _IFT_NRSolver_ddfunc, _IFT_NRSolver_ddm, _IFT_NRSolver_ddv, _IFT_NRSolver_forceScale, _IFT_NRSolver_forceScaleDofs, _IFT_NRSolver_linesearch, _IFT_NRSolver_lstype, _IFT_NRSolver_manrmsteps, _IFT_NRSolver_maxinc, _IFT_NRSolver_maxiter, _IFT_NRSolver_miniterations, _IFT_NRSolver_minsteplength, _IFT_NRSolver_rtold, _IFT_NRSolver_rtolf, _IFT_NRSolver_rtolv, _IFT_NRSolver_solutionDependentExternalForces, constrainedNRFlag, constrainedNRminiter, dg_forceScale, giveLinearSolver(), giveLineSearchSolver(), oofem::IntArray::giveSize(), oofem::InputRecord::hasField(), IR_GIVE_FIELD, IR_GIVE_OPTIONAL_FIELD, lsFlag, MANRMSteps, maxIncAllowed, mCalcStiffBeforeRes, minIterations, minStepLength, NR_Mode, NR_OldMode, nrsolverAccelNRM, nrsolverModifiedNRM, nsmax, numberOfPrescribedDofs, OOFEM_ERROR, prescribedDisplacementTF, prescribedDofs, prescribedDofsFlag, prescribedDofsValues, rtold, rtolf, solutionDependentExternalForcesFlag, solverType, and oofem::Vec1().

Referenced by NRSolver().

◆ initPrescribedEqs()

void oofem::NRSolver::initPrescribedEqs ( )

protected

Initiates prescribed equations.

Definition at line 434 of file nrsolver.C.

References oofem::IntArray::at(), oofem::NumericalMethod::domain, oofem::NumericalMethod::engngModel, oofem::ParallelContext::isLocal(), numberOfPrescribedDofs, prescribedDofs, prescribedEqs, and prescribedEqsInitFlag.

Referenced by solve(), and oofem::StaggeredSolver::solve().

◆ printState()

void oofem::NRSolver::printState ( FILE * outputStream )

overridevirtual

Prints status message of receiver to output stream. Prints the message corresponding to last solve.

Parameters

outputStream Stream to print state to.

Reimplemented from oofem::SparseNonLinearSystemNM.

Definition at line 572 of file nrsolver.C.

References lastReactions, numberOfPrescribedDofs, and prescribedDofs.

Referenced by NRSolver().

◆ reinitialize()

void oofem::NRSolver::reinitialize ( )

inlineoverridevirtual

Reinitializes the receiver. This is used, when topology of problem has changed (for example after adaptive refinement or load transfer in parallel applications). This is necessary for numerical methods, that cache some data between solution steps and that may depend on domain or problem topology. The caching of data by receiver is intended only for speeding up the calculation, but numerical method must be always able to generate this data again. This method clears receiver cached data dependent on topology, when it changes.

Reimplemented from oofem::NumericalMethod.

Definition at line 191 of file nrsolver.h.

References linSolver.

◆ setDomain()

void oofem::NRSolver::setDomain ( Domain * d )

inlineoverridevirtual

Reimplemented from oofem::NumericalMethod.

Definition at line 182 of file nrsolver.h.

References oofem::NumericalMethod::domain, linesearchSolver, and linSolver.

◆ solve()

ConvergedReason oofem::NRSolver::solve	(	SparseMtrx &	K,
		FloatArray &	R,
		FloatArray *	R0,
		FloatArray &	X,
		FloatArray &	dX,
		FloatArray &	F,
		const FloatArray &	internalForcesEBENorm,
		double &	s,
		referenceLoadInputModeType	rlm,
		int &	nite,
		TimeStep *	tStep )

overridevirtual

Solves the given sparse linear system of equations \( s R + R_0 - F(X) = 0 \). Total load vector is not passed, it is defined as \( s R + R_0 \), where s is scale factor.

See also: EngngModel::updateComponent Used to update the stiffness matrix and load vector.

Parameters

K	Coefficient matrix ( \(\displaystyle K = \frac{\partial F}{\partial X} \); stiffness matrix).
R	Reference incremental RHS (incremental load).
R0	Initial RHS (initial load).
X	Total solution (total displacement).
dX	Increment of solution (incremental displacements).
F	InternalRhs (real internal forces).
internalForcesEBENorm	Norm of internal nodal forces (evaluated on element by element basis) (split into each DOF id).
s	RHS scale factor (load level).
rlm	Reference load mode.
nite	Number of iterations needed.
tStep	Time step to solve for.

Returns: ConvergedReason value.

Todo: This doesn't check units, it is nonsense and must be corrected / Mikael

Implements oofem::SparseNonLinearSystemNM.

Reimplemented in oofem::StaggeredSolver.

Definition at line 205 of file nrsolver.C.

References oofem::FloatArray::add(), applyConstraintsToLoadIncrement(), applyConstraintsToStiffness(), oofem::FloatArray::at(), oofem::FloatArray::beDifferenceOf(), checkConvergence(), constrainedNRalpha, constrainedNRFlag, constrainedNRminiter, oofem::CR_CONVERGED, oofem::CR_DIVERGED_ITS, oofem::CR_DIVERGED_TOL, oofem::CR_UNKNOWN, oofem::SparseNonLinearSystemNM::deltaL, oofem::NumericalMethod::domain, oofem::NumericalMethod::engngModel, oofem::ExternalRhs, forceErrVec, giveLinearSolver(), giveLineSearchSolver(), oofem::FloatArray::giveSize(), oofem::TimeStep::incrementStateCounter(), oofem::TimeStep::incrementSubStepNumber(), initPrescribedEqs(), oofem::InternalRhs, lastReactions, linSolver, oofem::ParallelContext::localNorm(), lsFlag, oofem::macroScale, MANRMSteps, maxIncAllowed, mCalcStiffBeforeRes, minIterations, oofem::NonLinearLhs, NR_Mode, nrsolverAccelNRM, nrsolverFullNRM, nsmax, numberOfPrescribedDofs, OOFEM_LOG_INFO, prescribedDofs, prescribedDofsFlag, prescribedEqs, prescribedEqsInitFlag, oofem::FloatArray::resize(), rtold, rtolf, solutionDependentExternalForcesFlag, oofem::FloatArray::times(), and oofem::FloatArray::zero().

Referenced by NRSolver().

Member Data Documentation

◆ constrainedNRalpha

double oofem::NRSolver::constrainedNRalpha

protected

Scale factor for dX, dX_new = alpha * dX.

Definition at line 145 of file nrsolver.h.

Referenced by solve(), and oofem::StaggeredSolver::solve().

◆ constrainedNRFlag

bool oofem::NRSolver::constrainedNRFlag

protected

Flag indicating whether to use constrained Newton.

Definition at line 143 of file nrsolver.h.

Referenced by checkConvergence(), oofem::StaggeredSolver::checkConvergenceDofIdArray(), initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ constrainedNRminiter

int oofem::NRSolver::constrainedNRminiter

protected

Minimum number of iterations before constraint is activated.

Definition at line 147 of file nrsolver.h.

Referenced by initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ dg_forceScale

std :: map< int, double > oofem::NRSolver::dg_forceScale

protected

Optional user supplied scale of forces used in convergence check.

Definition at line 164 of file nrsolver.h.

Referenced by checkConvergence(), and initializeFrom().

◆ forceErrVec

FloatArray oofem::NRSolver::forceErrVec

protected

Todo: This doesn't check units, it is nonsense and must be corrected / Mikael

Definition at line 155 of file nrsolver.h.

Referenced by checkConvergence(), oofem::StaggeredSolver::checkConvergenceDofIdArray(), solve(), and oofem::StaggeredSolver::solve().

◆ forceErrVecOld

FloatArray oofem::NRSolver::forceErrVecOld

protected

Definition at line 156 of file nrsolver.h.

Referenced by checkConvergence(), and oofem::StaggeredSolver::checkConvergenceDofIdArray().

◆ lastReactions

FloatArray oofem::NRSolver::lastReactions

protected

Computed reactions. They are stored in order to print them in printState method.

Definition at line 135 of file nrsolver.h.

Referenced by printState(), solve(), and oofem::StaggeredSolver::solve().

◆ linesearchSolver

std :: unique_ptr< LineSearchNM > oofem::NRSolver::linesearchSolver

protected

Line search solver.

Definition at line 139 of file nrsolver.h.

Referenced by giveLineSearchSolver(), and setDomain().

◆ linSolver

std :: unique_ptr< SparseLinearSystemNM > oofem::NRSolver::linSolver

protected

linear system solver

Definition at line 109 of file nrsolver.h.

Referenced by giveLinearSolver(), reinitialize(), setDomain(), solve(), and oofem::StaggeredSolver::solve().

◆ lsFlag

bool oofem::NRSolver::lsFlag

protected

Flag indicating whether to use line-search.

Definition at line 137 of file nrsolver.h.

Referenced by initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ MANRMSteps

int oofem::NRSolver::MANRMSteps

protected

Definition at line 106 of file nrsolver.h.

Referenced by initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ maxIncAllowed

double oofem::NRSolver::maxIncAllowed

protected

Definition at line 166 of file nrsolver.h.

Referenced by initializeFrom(), and solve().

◆ mCalcStiffBeforeRes

bool oofem::NRSolver::mCalcStiffBeforeRes

protected

Flag indicating if the stiffness should be evaluated before the residual in the first iteration.

Definition at line 141 of file nrsolver.h.

Referenced by initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ minIterations

int oofem::NRSolver::minIterations

protected

Definition at line 102 of file nrsolver.h.

Referenced by initializeFrom(), oofem::DynamicRelaxationSolver::solve(), solve(), and oofem::StaggeredSolver::solve().

◆ minStepLength

double oofem::NRSolver::minStepLength

protected

Definition at line 103 of file nrsolver.h.

Referenced by initializeFrom().

◆ NR_Mode

nrsolver_ModeType oofem::NRSolver::NR_Mode

protected

Definition at line 104 of file nrsolver.h.

Referenced by initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ NR_ModeTick

int oofem::NRSolver::NR_ModeTick

protected

Definition at line 105 of file nrsolver.h.

◆ NR_OldMode

nrsolver_ModeType oofem::NRSolver::NR_OldMode

protected

Definition at line 104 of file nrsolver.h.

Referenced by initializeFrom().

◆ nsmax

int oofem::NRSolver::nsmax

protected

Definition at line 102 of file nrsolver.h.

Referenced by initializeFrom(), oofem::DynamicRelaxationSolver::solve(), solve(), and oofem::StaggeredSolver::solve().

◆ numberOfPrescribedDofs

int oofem::NRSolver::numberOfPrescribedDofs

protected

number of prescribed displacement

Definition at line 115 of file nrsolver.h.

Referenced by applyConstraintsToLoadIncrement(), applyConstraintsToStiffness(), initializeFrom(), initPrescribedEqs(), printState(), solve(), and oofem::StaggeredSolver::solve().

◆ prescribedDisplacementTF

int oofem::NRSolver::prescribedDisplacementTF

protected

Load Time Function of prescribed values.

Definition at line 129 of file nrsolver.h.

Referenced by applyConstraintsToLoadIncrement(), and initializeFrom().

◆ prescribedDofs

IntArray oofem::NRSolver::prescribedDofs

protected

Array of pairs identifying prescribed dofs (node, dof).

Definition at line 125 of file nrsolver.h.

Referenced by initializeFrom(), initPrescribedEqs(), printState(), solve(), and oofem::StaggeredSolver::solve().

◆ prescribedDofsFlag

bool oofem::NRSolver::prescribedDofsFlag

protected

Flag indicating that some dofs are controlled under displacement control. In parallel mode, numberOfPrescribedDofs is local (related to specific partition) so its nonzero value does not mean that there are no prescribed dofs on other partitions.

Definition at line 122 of file nrsolver.h.

Referenced by initializeFrom(), solve(), and oofem::StaggeredSolver::solve().

◆ prescribedDofsValues

FloatArray oofem::NRSolver::prescribedDofsValues

protected

Array of prescribed values.

Definition at line 127 of file nrsolver.h.

Referenced by applyConstraintsToLoadIncrement(), and initializeFrom().

◆ prescribedEqs

IntArray oofem::NRSolver::prescribedEqs

protected

Array of prescribed equations.

Definition at line 131 of file nrsolver.h.

Referenced by applyConstraintsToLoadIncrement(), applyConstraintsToStiffness(), initPrescribedEqs(), solve(), and oofem::StaggeredSolver::solve().

◆ prescribedEqsInitFlag

bool oofem::NRSolver::prescribedEqsInitFlag

protected

Flag indicating that prescribedEqs were initialized.

Definition at line 133 of file nrsolver.h.

Referenced by initPrescribedEqs(), solve(), and oofem::StaggeredSolver::solve().

◆ rtold

FloatArray oofem::NRSolver::rtold

protected

Relative iterative displacement change tolerance for each group.

Definition at line 152 of file nrsolver.h.

Referenced by checkConvergence(), oofem::StaggeredSolver::checkConvergenceDofIdArray(), initializeFrom(), oofem::DynamicRelaxationSolver::solve(), solve(), and oofem::StaggeredSolver::solve().

◆ rtolf

FloatArray oofem::NRSolver::rtolf

protected

Relative unbalanced force tolerance for each group.

Definition at line 150 of file nrsolver.h.

Referenced by checkConvergence(), oofem::StaggeredSolver::checkConvergenceDofIdArray(), initializeFrom(), oofem::DynamicRelaxationSolver::solve(), solve(), and oofem::StaggeredSolver::solve().

◆ smConstraintVersion

SparseMtrx::SparseMtrxVersionType oofem::NRSolver::smConstraintVersion

protected

sparse matrix version, used to control constrains application to stiffness

Definition at line 113 of file nrsolver.h.

Referenced by applyConstraintsToStiffness().

◆ solutionDependentExternalForcesFlag

bool oofem::NRSolver::solutionDependentExternalForcesFlag

protected

Solution dependent external forces - updating then each NR iteration.

Definition at line 159 of file nrsolver.h.

Referenced by initializeFrom(), and solve().

◆ solverType

LinSystSolverType oofem::NRSolver::solverType

protected

linear system solver ID

Definition at line 111 of file nrsolver.h.

Referenced by applyConstraintsToLoadIncrement(), giveLinearSolver(), and initializeFrom().

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

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ nrsolver_ModeType

Constructor & Destructor Documentation

◆ NRSolver()

◆ ~NRSolver()

Member Function Documentation

◆ applyConstraintsToLoadIncrement()

◆ applyConstraintsToStiffness()

◆ checkConvergence()

◆ giveClassName()

◆ giveInputRecordName()

◆ giveLinearSolver()

◆ giveLineSearchSolver()

◆ initializeFrom()

◆ initPrescribedEqs()

◆ printState()

◆ reinitialize()

◆ setDomain()

◆ solve()

Member Data Documentation

◆ constrainedNRalpha

◆ constrainedNRFlag

◆ constrainedNRminiter

◆ dg_forceScale

◆ forceErrVec

◆ forceErrVecOld

◆ lastReactions

◆ linesearchSolver

◆ linSolver

◆ lsFlag

◆ MANRMSteps

◆ maxIncAllowed

◆ mCalcStiffBeforeRes

◆ minIterations

◆ minStepLength

◆ NR_Mode

◆ NR_ModeTick

◆ NR_OldMode

◆ nsmax

◆ numberOfPrescribedDofs

◆ prescribedDisplacementTF

◆ prescribedDofs

◆ prescribedDofsFlag

◆ prescribedDofsValues

◆ prescribedEqs

◆ prescribedEqsInitFlag

◆ rtold

◆ rtolf

◆ smConstraintVersion

◆ solutionDependentExternalForcesFlag

◆ solverType