MFEM  v3.4
Finite element discretization library
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mfem::TMOP_QualityMetric Class Referenceabstract

Abstract class for local mesh quality metrics in the target-matrix optimization paradigm (TMOP) by P. Knupp et al. More...

#include <tmop.hpp>

Inherits mfem::HyperelasticModel.

Inherited by mfem::TMOP_Metric_001, mfem::TMOP_Metric_002, mfem::TMOP_Metric_007, mfem::TMOP_Metric_009, mfem::TMOP_Metric_022, mfem::TMOP_Metric_050, mfem::TMOP_Metric_055, mfem::TMOP_Metric_056, mfem::TMOP_Metric_058, mfem::TMOP_Metric_077, mfem::TMOP_Metric_211, mfem::TMOP_Metric_252, mfem::TMOP_Metric_301, mfem::TMOP_Metric_302, mfem::TMOP_Metric_303, mfem::TMOP_Metric_315, mfem::TMOP_Metric_316, mfem::TMOP_Metric_321, and mfem::TMOP_Metric_352.

Collaboration diagram for mfem::TMOP_QualityMetric:
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Public Member Functions

 TMOP_QualityMetric ()
 
virtual ~TMOP_QualityMetric ()
 
void SetTargetJacobian (const DenseMatrix &_Jtr)
 Specify the reference-element -> target-element Jacobian matrix for the point of interest. More...
 
virtual double EvalW (const DenseMatrix &Jpt) const =0
 Evaluate the strain energy density function, W = W(Jpt). More...
 
virtual void EvalP (const DenseMatrix &Jpt, DenseMatrix &P) const =0
 Evaluate the 1st Piola-Kirchhoff stress tensor, P = P(Jpt). More...
 
virtual void AssembleH (const DenseMatrix &Jpt, const DenseMatrix &DS, const double weight, DenseMatrix &A) const =0
 Evaluate the derivative of the 1st Piola-Kirchhoff stress tensor and assemble its contribution to the local gradient matrix 'A'. More...
 
- Public Member Functions inherited from mfem::HyperelasticModel
 HyperelasticModel ()
 
virtual ~HyperelasticModel ()
 
void SetTransformation (ElementTransformation &_Ttr)
 

Protected Member Functions

void SetTransformation (ElementTransformation &)
 The method SetTransformation() is hidden for TMOP_QualityMetrics, because it is not used. More...
 

Protected Attributes

const DenseMatrixJtr
 
- Protected Attributes inherited from mfem::HyperelasticModel
ElementTransformationTtr
 

Detailed Description

Abstract class for local mesh quality metrics in the target-matrix optimization paradigm (TMOP) by P. Knupp et al.

Definition at line 24 of file tmop.hpp.

Constructor & Destructor Documentation

mfem::TMOP_QualityMetric::TMOP_QualityMetric ( )
inline

Definition at line 35 of file tmop.hpp.

virtual mfem::TMOP_QualityMetric::~TMOP_QualityMetric ( )
inlinevirtual

Definition at line 36 of file tmop.hpp.

Member Function Documentation

virtual void mfem::TMOP_QualityMetric::AssembleH ( const DenseMatrix Jpt,
const DenseMatrix DS,
const double  weight,
DenseMatrix A 
) const
pure virtual

Evaluate the derivative of the 1st Piola-Kirchhoff stress tensor and assemble its contribution to the local gradient matrix 'A'.

Parameters
[in]JptRepresents the target->physical transformation Jacobian matrix.
[in]DSGradient of the basis matrix (dof x dim).
[in]weightQuadrature weight coefficient for the point.
[in,out]ALocal gradient matrix where the contribution from this point will be added.

Computes weight * d(dW_dxi)_d(xj) at the current point, for all i and j, where x1 ... xn are the FE dofs. This function is usually defined using the matrix invariants and their derivatives.

Implements mfem::HyperelasticModel.

Implemented in mfem::TMOP_Metric_352, mfem::TMOP_Metric_321, mfem::TMOP_Metric_316, mfem::TMOP_Metric_315, mfem::TMOP_Metric_303, mfem::TMOP_Metric_302, mfem::TMOP_Metric_301, mfem::TMOP_Metric_252, mfem::TMOP_Metric_211, mfem::TMOP_Metric_077, mfem::TMOP_Metric_058, mfem::TMOP_Metric_056, mfem::TMOP_Metric_055, mfem::TMOP_Metric_050, mfem::TMOP_Metric_022, mfem::TMOP_Metric_009, mfem::TMOP_Metric_007, mfem::TMOP_Metric_002, and mfem::TMOP_Metric_001.

virtual void mfem::TMOP_QualityMetric::EvalP ( const DenseMatrix Jpt,
DenseMatrix P 
) const
pure virtual
virtual double mfem::TMOP_QualityMetric::EvalW ( const DenseMatrix Jpt) const
pure virtual
void mfem::TMOP_QualityMetric::SetTargetJacobian ( const DenseMatrix _Jtr)
inline

Specify the reference-element -> target-element Jacobian matrix for the point of interest.

The specified Jacobian matrix, Jtr, can be used by metrics that cannot be written just as a function of the target->physical Jacobian matrix, Jpt.

Definition at line 44 of file tmop.hpp.

void mfem::TMOP_QualityMetric::SetTransformation ( ElementTransformation )
inlineprotected

The method SetTransformation() is hidden for TMOP_QualityMetrics, because it is not used.

Definition at line 32 of file tmop.hpp.

Member Data Documentation

const DenseMatrix* mfem::TMOP_QualityMetric::Jtr
protected

Jacobian of the reference-element to target-element transformation.

Definition at line 27 of file tmop.hpp.


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