The class representing Zienkiewicz-Zhu remeshing criteria. More...

#include <zzerrorestimator.h>

Inheritance diagram for oofem::ZZRemeshingCriteria:

Collaboration diagram for oofem::ZZRemeshingCriteria:

Public Types
enum	ZZRemeshingCriteriaModeType { stressBased }
	Mode of receiver, allows to use it in more general situations. More...

Public Member Functions
	ZZRemeshingCriteria (int n, ErrorEstimator *e)
	Constructor. More...

virtual	~ZZRemeshingCriteria ()
	Destructor. More...

virtual double	giveRequiredDofManDensity (int num, TimeStep *tStep, int relative=0)
	Returns the required mesh size n given dof manager. More...

virtual double	giveDofManDensity (int num)
	Returns existing mesh size for given dof manager. More...

virtual RemeshingStrategy	giveRemeshingStrategy (TimeStep *tStep)
	Determines, if the remeshing is needed, and if needed, the type of strategy used. More...

virtual int	estimateMeshDensities (TimeStep *tStep)
	Estimates the nodal densities. More...

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

virtual const char *	giveInputRecordName () const

virtual const char *	giveClassName () const

Public Member Functions inherited from oofem::RemeshingCriteria
	RemeshingCriteria (int n, ErrorEstimator *e)
	Constructor. More...

virtual	~RemeshingCriteria ()
	Destructor. More...

virtual void	reinitialize ()

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

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

virtual int	checkConsistency ()
	Allows programmer to test some internal data, before computation begins. More...

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

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

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

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

Protected Attributes
FloatArray	nodalDensities
	Array of nodal mesh densities. More...

RemeshingStrategy	remeshingStrategy
	Remeshing strategy proposed. More...

StateCounterType	stateCounter
	Actual values (densities) state counter. More...

ZZRemeshingCriteriaModeType	mode
	Mode of receiver. More...

double	requiredError
	Required error to obtain. More...

double	minElemSize
	Minimum element size allowed. More...

Protected Attributes inherited from oofem::RemeshingCriteria
ErrorEstimator *	ee

CommunicatorBuff *	commBuff
	Common Communicator buffer. More...

ProblemCommunicator *	communicator
	Communicator. More...

bool	initCommMap
	Communication init flag. 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...

Detailed Description

The class representing Zienkiewicz-Zhu remeshing criteria.

(Assumes that error is equally distributed between elements, then the requirement for max. permissible error can be translated into placing a limit on the error on each element.) The basic task is to evaluate the required mesh density (at nodes) on given domain, based on informations provided by the compatible error estimator.

The remeshing criteria is maintained by the corresponding error estimator. This is mainly due to fact, that is necessary for given EE to create compatible RC. In our concept, the EE is responsible.

Definition at line 182 of file zzerrorestimator.h.

Member Enumeration Documentation

enum oofem::ZZRemeshingCriteria::ZZRemeshingCriteriaModeType

Mode of receiver, allows to use it in more general situations.

Enumerator
stressBased

Definition at line 186 of file zzerrorestimator.h.

Constructor & Destructor Documentation

oofem::ZZRemeshingCriteria::ZZRemeshingCriteria	(	int	n,
		ErrorEstimator *	e
	)

Constructor.

Definition at line 323 of file zzerrorestimator.C.

References mode, stateCounter, and stressBased.

virtual oofem::ZZRemeshingCriteria::~ZZRemeshingCriteria ( )

inlinevirtual

Destructor.

Definition at line 206 of file zzerrorestimator.h.

References oofem::ZZErrorEstimator::initializeFrom().

Member Function Documentation

int oofem::ZZRemeshingCriteria::estimateMeshDensities ( TimeStep * tStep )

virtual

Estimates the nodal densities.

Parameters

tStep Time step.

Implements oofem::RemeshingCriteria.

Definition at line 358 of file zzerrorestimator.C.

References oofem::FloatArray::at(), oofem::FEMComponent::domain, oofem::RemeshingCriteria::ee, giveDofManDensity(), oofem::ErrorEstimator::giveElementError(), oofem::Domain::giveElements(), oofem::Domain::giveNumberOfDofManagers(), oofem::Domain::giveNumberOfElements(), oofem::TimeStep::giveSolutionStateCounter(), oofem::ErrorEstimator::giveValue(), oofem::globalErrorEEV, oofem::globalNormEEV, oofem::indicatorET, oofem::internalStressET, oofem::min(), mode, nodalDensities, oofem::NoRemeshing_RS, OOFEM_ERROR, oofem::RemeshingFromPreviousState_RS, remeshingStrategy, requiredError, oofem::FloatArray::resize(), oofem::ErrorEstimator::skipRegion(), stateCounter, and stressBased.

Referenced by oofem::CombinedZZSIRemeshingCriteria::estimateMeshDensities(), giveRemeshingStrategy(), and giveRequiredDofManDensity().

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

inlinevirtual

Returns: Class name of the receiver.

Implements oofem::FEMComponent.

Definition at line 216 of file zzerrorestimator.h.

double oofem::ZZRemeshingCriteria::giveDofManDensity ( int num )

virtual

Returns existing mesh size for given dof manager.

Parameters

num	DofMan number.

Implements oofem::RemeshingCriteria.

Definition at line 469 of file zzerrorestimator.C.

References oofem::IntArray::at(), oofem::Element::computeMeanSize(), oofem::FEMComponent::domain, oofem::Domain::giveConnectivityTable(), oofem::ConnectivityTable::giveDofManConnectivityArray(), oofem::Domain::giveElement(), oofem::IntArray::giveSize(), and oofem::min().

Referenced by estimateMeshDensities(), and giveRequiredDofManDensity().

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

inlinevirtual

Returns: Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 215 of file zzerrorestimator.h.

RemeshingStrategy oofem::ZZRemeshingCriteria::giveRemeshingStrategy ( TimeStep * tStep )

virtual

Determines, if the remeshing is needed, and if needed, the type of strategy used.

Parameters

tStep Time step.

Implements oofem::RemeshingCriteria.

Definition at line 351 of file zzerrorestimator.C.

References estimateMeshDensities(), and remeshingStrategy.

Referenced by oofem::CombinedZZSIRemeshingCriteria::giveRemeshingStrategy().

double oofem::ZZRemeshingCriteria::giveRequiredDofManDensity	(	int	num,
		TimeStep *	tStep,
		int	relative = `0`
	)

virtual

Returns the required mesh size n given dof manager.

The mesh density is defined as a required element size (in 1D the element length, in 2D the square from element area).

Parameters

num	Dofman number.
tStep	Time step.
relative	If zero, then actual density is returned, otherwise the relative density to current is returned.

Implements oofem::RemeshingCriteria.

Definition at line 330 of file zzerrorestimator.C.

References oofem::FloatArray::at(), estimateMeshDensities(), giveDofManDensity(), oofem::max(), minElemSize, and nodalDensities.

Referenced by oofem::CombinedZZSIRemeshingCriteria::giveRequiredDofManDensity().

IRResultType oofem::ZZRemeshingCriteria::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.