oofem::MeshQualityErrorEstimator Class Reference

#include <meshqualityerrorestimator.h>

Inheritance diagram for oofem::MeshQualityErrorEstimator:

Collaboration diagram for oofem::MeshQualityErrorEstimator:

Public Member Functions
	MeshQualityErrorEstimator (int n, Domain *d)
	Constructor.
virtual	~MeshQualityErrorEstimator ()
	Destructor.
double	giveElementError (EE_ErrorType type, Element *elem, TimeStep *tStep) override
double	giveValue (EE_ValueType type, TimeStep *tStep) override
	Gives the max error from any element in the domain.
int	estimateError (EE_ErrorMode mode, TimeStep *tStep) override
	Empty implementation.
RemeshingCriteria *	giveRemeshingCrit () override
void	initializeFrom (InputRecord &ir) override
const char *	giveClassName () const override
const char *	giveInputRecordName () const override
Public Member Functions inherited from oofem::ErrorEstimator
	ErrorEstimator (int n, Domain *d)
	Constructor.
virtual	~ErrorEstimator ()
	Destructor.
void	setDomain (Domain *d) override
	Sets Domain; should also re-initialize attributes if necessary.
int	giveNumberOfSkippedElements ()
ErrorEstimatorType	giveErrorEstimatorType () const
bool	skipRegion (int reg)
virtual void	reinitialize ()
Public Member Functions inherited from oofem::FEMComponent
	FEMComponent (int n, Domain *d)
virtual	~FEMComponent ()=default
	Virtual destructor.
Domain *	giveDomain () const
int	giveNumber () const
void	setNumber (int num)
virtual void	updateLocalNumbering (EntityRenumberingFunctor &f)
virtual void	initializeFrom (InputRecord &ir, int priority)
virtual void	initializeFinish ()
virtual void	postInitialize ()
	Performs post initialization steps. Called after all components are created and initialized.
virtual void	giveInputRecord (DynamicInputRecord &input)
virtual void	saveContext (DataStream &stream, ContextMode mode)
virtual void	restoreContext (DataStream &stream, ContextMode mode)
virtual int	checkConsistency ()
virtual void	printOutputAt (FILE *file, TimeStep *tStep)
virtual void	printYourself ()
	Prints receiver state on stdout. Useful for debugging.
virtual Interface *	giveInterface (InterfaceType t)
std::string	errorInfo (const char *func) const
	Returns string for prepending output (used by error reporting macros).

Static Protected Member Functions
static double	computeTriangleRadiusError (Element *elem)
static double	computeJacobianError (FEInterpolation &fei, IntegrationRule &ir, Element *elem)

Additional Inherited Members
Protected Attributes inherited from oofem::ErrorEstimator
ErrorEstimatorType	eeType
std ::unique_ptr< RemeshingCriteria >	rc
IntArray	regionSkipMap
int	skippedNelems
	Number of skipped elements.
InternalStateType	IStype
	Internal state type of variable to get internal forces.
Protected Attributes inherited from oofem::FEMComponent
int	number
	Component number.
Domain *	domain
	Link to domain object, useful for communicating with other FEM components.

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

MeshQualityErrorEstimator()

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

inline

Constructor.

Definition at line 78 of file meshqualityerrorestimator.h.

References oofem::EET_MeshQuality, oofem::ErrorEstimator::eeType, and oofem::ErrorEstimator::ErrorEstimator().

~MeshQualityErrorEstimator()

virtual oofem::MeshQualityErrorEstimator::~MeshQualityErrorEstimator ( )

inlinevirtual

Destructor.

Definition at line 82 of file meshqualityerrorestimator.h.

Member Function Documentation

computeJacobianError()

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 86 of file meshqualityerrorestimator.C.

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

Referenced by giveElementError().

computeTriangleRadiusError()

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::distance(), oofem::DofManager::giveCoordinates(), and oofem::Element::giveNode().

Referenced by giveElementError().

estimateError()

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

overridevirtual

Empty implementation.

Implements oofem::ErrorEstimator.

Definition at line 113 of file meshqualityerrorestimator.C.

giveClassName()

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

inlineoverridevirtual

Returns

Class name of the receiver.

Implements oofem::FEMComponent.

Definition at line 95 of file meshqualityerrorestimator.h.

giveElementError()

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

overridevirtual

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().

giveInputRecordName()

const char * oofem::MeshQualityErrorEstimator::giveInputRecordName ( ) const

inlineoverridevirtual

Returns

Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 96 of file meshqualityerrorestimator.h.

References _IFT_MeshQualityErrorEstimator_Name.

giveRemeshingCrit()

RemeshingCriteria * oofem::MeshQualityErrorEstimator::giveRemeshingCrit ( )

inlineoverridevirtual

Returns reference to associated remeshing criteria.

Implements oofem::ErrorEstimator.

Definition at line 92 of file meshqualityerrorestimator.h.

giveValue()

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

overridevirtual

Gives the max error from any element in the domain.

Implements oofem::ErrorEstimator.

Definition at line 101 of file meshqualityerrorestimator.C.

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

initializeFrom()

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

overridevirtual

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. Note that initializeFrom may be called mutiple times.

See also

IR_GIVE_FIELD

IR_GIVE_OPTIONAL_FIELD

Parameters

ir	Input record to initialize from.
priority	Priority of the input record. This is used to determine the order of initialization

Reimplemented from oofem::ErrorEstimator.

Definition at line 118 of file meshqualityerrorestimator.C.

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

• meshqualityerrorestimator.h
• meshqualityerrorestimator.C