This error estimator measures the quality of the elements. More...

#include <meshqualityerrorestimator.h>

Inheritance diagram for oofem::MeshQualityErrorEstimator:

Collaboration diagram for oofem::MeshQualityErrorEstimator:

Public Member Functions
	MeshQualityErrorEstimator (int n, Domain *d)
	Constructor. More...

virtual	~MeshQualityErrorEstimator ()
	Destructor. More...

virtual double	giveElementError (EE_ErrorType type, Element elem, TimeStep tStep)
	Returns the element error. More...

virtual double	giveValue (EE_ValueType type, TimeStep *tStep)
	Gives the max error from any element in the domain. More...

virtual int	estimateError (EE_ErrorMode mode, TimeStep *tStep)
	Empty implementation. More...

virtual RemeshingCriteria *	giveRemeshingCrit ()
	Returns reference to associated remeshing criteria. More...

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

virtual const char *	giveClassName () const

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

virtual	~ErrorEstimator ()
	Destructor. More...

void	setDomain (Domain *d)
	Sets Domain; should also re-initialize attributes if necessary. More...

int	giveNumberOfSkippedElements ()
	Returns number of elements skipped in error estimation. More...

ErrorEstimatorType	giveErrorEstimatorType () const
	Returns error estimation type of receiver. More...

bool	skipRegion (int reg)
	Returns nonzero if region has been skipped in error estimation (user option). More...

virtual void	reinitialize ()

virtual const char *	giveInputRecordName () const

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

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...

Static Protected Member Functions
static double	computeTriangleRadiusError (Element *elem)
	Computes error based on the inscribed triangle/circle ratio. More...

static double	computeJacobianError (FEInterpolation &fei, IntegrationRule &ir, Element *elem)
	Computes the error based on the conditioning of the Jacobian. More...

Additional Inherited Members
Protected Attributes inherited from oofem::ErrorEstimator
ErrorEstimatorType	eeType

std::unique_ptr< RemeshingCriteria >	rc

IntArray	regionSkipMap
	Map indicating regions to skip (region - cross section model). More...

int	skippedNelems
	Number of skipped elements. More...

InternalStateType	IStype
	Internal state type of variable to get internal forces. 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

This error estimator measures the quality of the elements.

This is useful when elements are deformed during the simulation.

Error estimates should be unitless, positive, and scaled properly. Zero error should reflect a perfect element. Error value of one should reflect an element of acceptable quality.

Note: Its open for discussion whether the routine should give the reciprocal error to handle extremely badly shaped elements.

Author: Mikael Öhman

Definition at line 61 of file meshqualityerrorestimator.h.

Constructor & Destructor Documentation

oofem::MeshQualityErrorEstimator::MeshQualityErrorEstimator	(	int	n,
		Domain *	d
	)

inline

Constructor.

Definition at line 78 of file meshqualityerrorestimator.h.

References oofem::EET_MeshQuality.

virtual oofem::MeshQualityErrorEstimator::~MeshQualityErrorEstimator ( )

inlinevirtual

Destructor.

Definition at line 82 of file meshqualityerrorestimator.h.

Member Function Documentation

double oofem::MeshQualityErrorEstimator::computeJacobianError	(	FEInterpolation &	fei,
		IntegrationRule &	ir,
		Element *	elem
	)

staticprotected

Computes the error based on the conditioning of the Jacobian.

Returns: Error value for the element.

Definition at line 88 of file meshqualityerrorestimator.C.

References oofem::FloatMatrix::computeReciprocalCondition(), oofem::FloatMatrix::giveDeterminant(), oofem::FEInterpolation::giveJacobianMatrixAt(), and oofem::sgn().

Referenced by giveElementError().

double oofem::MeshQualityErrorEstimator::computeTriangleRadiusError ( Element * elem )

staticprotected

Computes error based on the inscribed triangle/circle ratio.

Returns: Error value for the element. Zero for equilateral triangle.

Definition at line 70 of file meshqualityerrorestimator.C.

References oofem::FloatArray::distance(), oofem::Node::giveCoordinates(), and oofem::Element::giveNode().

Referenced by giveElementError().

int oofem::MeshQualityErrorEstimator::estimateError	(	EE_ErrorMode	mode,
		TimeStep *	tStep
	)

virtual

Empty implementation.

Implements oofem::ErrorEstimator.

Definition at line 115 of file meshqualityerrorestimator.C.

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

inlinevirtual

Returns: Class name of the receiver.

Implements oofem::FEMComponent.

Definition at line 95 of file meshqualityerrorestimator.h.

double oofem::MeshQualityErrorEstimator::giveElementError	(	EE_ErrorType	type,
		Element *	elem,
		TimeStep *	tStep
	)

virtual

Returns the element error.

The estimateError service should be called before.

Parameters

type	Error type.
elem	Element for which error requested.
tStep	Time step.

Returns: Element error.

Implements oofem::ErrorEstimator.

Definition at line 45 of file meshqualityerrorestimator.C.

References computeJacobianError(), computeTriangleRadiusError(), oofem::Element::giveDefaultIntegrationRulePtr(), oofem::Element::giveGeometryType(), and oofem::Element::giveInterpolation().

Referenced by giveValue().

virtual RemeshingCriteria* oofem::MeshQualityErrorEstimator::giveRemeshingCrit ( )

inlinevirtual

Returns reference to associated remeshing criteria.

Implements oofem::ErrorEstimator.

Definition at line 92 of file meshqualityerrorestimator.h.

double oofem::MeshQualityErrorEstimator::giveValue	(	EE_ValueType	type,
		TimeStep *	tStep
	)

virtual

Gives the max error from any element in the domain.

Implements oofem::ErrorEstimator.

Definition at line 103 of file meshqualityerrorestimator.C.

References oofem::FEMComponent::domain, giveElementError(), oofem::Domain::giveElements(), and oofem::unknownET.

IRResultType oofem::MeshQualityErrorEstimator::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::ErrorEstimator.

Definition at line 120 of file meshqualityerrorestimator.C.

References oofem::ErrorEstimator::initializeFrom().

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

Public Member Functions

Static Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation