Interface for mortar element assembly. The MortarIntegrator interface is used for performing Petrov-Galerkin finite element assembly on intersections between elements. The quadrature rules are to be generated by a cut algorithm (e.g., mfem::Cut). The quadrature rules are defined in the respective trial and test reference frames. Trial and test spaces can be associated with different element shapes (e.g., triangles and quadrilaterals) and different polynomial orders (e.g., 1 and 4). This class is designed to work in conjunction with the MFEM/moonolith module but it can be used also for other applications. More...

#include <mortarintegrator.hpp>

Inheritance diagram for mfem::MortarIntegrator:

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Public Member Functions
virtual void	AssembleElementMatrix (const FiniteElement &trial, const IntegrationRule &trial_ir, ElementTransformation &trial_Trans, const FiniteElement &test, const IntegrationRule &test_ir, ElementTransformation &test_Trans, DenseMatrix &elemmat)=0
	Implements the assembly routine.

virtual int	GetQuadratureOrder () const

virtual	~MortarIntegrator ()

virtual bool	is_vector_fe () const =0

Detailed Description

Interface for mortar element assembly. The MortarIntegrator interface is used for performing Petrov-Galerkin finite element assembly on intersections between elements. The quadrature rules are to be generated by a cut algorithm (e.g., mfem::Cut). The quadrature rules are defined in the respective trial and test reference frames. Trial and test spaces can be associated with different element shapes (e.g., triangles and quadrilaterals) and different polynomial orders (e.g., 1 and 4). This class is designed to work in conjunction with the MFEM/moonolith module but it can be used also for other applications.

Definition at line 31 of file mortarintegrator.hpp.

Constructor & Destructor Documentation

◆ ~MortarIntegrator()

virtual mfem::MortarIntegrator::~MortarIntegrator ( )

inlinevirtual

Definition at line 60 of file mortarintegrator.hpp.

Member Function Documentation

◆ AssembleElementMatrix()

virtual void mfem::MortarIntegrator::AssembleElementMatrix	(	const FiniteElement &	trial,
		const IntegrationRule &	trial_ir,
		ElementTransformation &	trial_Trans,
		const FiniteElement &	test,
		const IntegrationRule &	test_ir,
		ElementTransformation &	test_Trans,
		DenseMatrix &	elemmat )

pure virtual

Implements the assembly routine.

Parameters

trial	is the master/source element
trial_ir	is the quadrature formula for evaluating quantities within the trial element
trial_Trans	the geometric transformation of the trial element
test	is the slave/destination element
test_ir	is the quadrature formula for evaluating quantities within the test element
test_Trans	the geometric transformation of the test element
elemmat	the result of the assembly

Implemented in mfem::L2MortarIntegrator, and mfem::VectorL2MortarIntegrator.

◆ GetQuadratureOrder()

virtual int mfem::MortarIntegrator::GetQuadratureOrder ( ) const

inlinevirtual

Returns: the additional orders of quadrature required by the integrator. It is 0 by default, override method to change that.

Definition at line 58 of file mortarintegrator.hpp.

◆ is_vector_fe()

virtual bool mfem::MortarIntegrator::is_vector_fe ( ) const