ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM > Class Template Reference

#include <ExplicitCardiacMechanicsSolver.hpp>

Inherits AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >.

Collaboration diagram for ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >:

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List of all members.

Public Member Functions
	ExplicitCardiacMechanicsSolver (ContractionModelName contractionModel, QuadraticMesh< DIM > &rQuadMesh, SolidMechanicsProblemDefinition< DIM > &rProblemDefinition, std::string outputDirectory)
virtual	~ExplicitCardiacMechanicsSolver ()
void	Solve (double time, double nextTime, double odeTimestep)
Private Member Functions
bool	IsImplicitSolver ()
void	GetActiveTensionAndTensionDerivs (double currentFibreStretch, unsigned currentQuadPointGlobalIndex, bool assembleJacobian, double &rActiveTension, double &rDerivActiveTensionWrtLambda, double &rDerivActiveTensionWrtDLambdaDt)
void	InitialiseContractionModels (ContractionModelName contractionModel)
Friends
class	TestExplicitCardiacMechanicsSolver

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Detailed Description

template<class ELASTICITY_SOLVER, unsigned DIM>
class ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >

Explicit cardiac mechanics solver for solving electromechanic problems where the contraction model is not stretch-rate-dependent (for those the implicit solver is needed).

The first template parameter should be either IncompressibleNonlinearElasticitySolver or CompressibleNonlinearElasticityAssembler; this will be the class that this class ultimately inherits from.

The general explicit solution procedure is to do, each timestep: (0) [solve the electrics and interpolate Ca and voltage onto quad points (i) pass Ca and voltage to the contraction models (ii) pass the fibre stretch to the contraction models in case this is needed. (iii) integrate the contraction models in order to get the active tension (iv) solve for the deformation using this active tension.

Definition at line 54 of file ExplicitCardiacMechanicsSolver.hpp.

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Constructor & Destructor Documentation

template<class ELASTICITY_SOLVER , unsigned DIM>

ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::ExplicitCardiacMechanicsSolver	(	ContractionModelName	contractionModel,
		QuadraticMesh< DIM > &	rQuadMesh,
		SolidMechanicsProblemDefinition< DIM > &	rProblemDefinition,
		std::string	outputDirectory
	)			[inline]

Constructor

Parameters:

	contractionModel	The contraction model.
	rQuadMesh	A reference to the mesh.
	rProblemDefinition	Object defining body force and boundary conditions
	outputDirectory	The output directory, relative to TEST_OUTPUT

Definition at line 36 of file ExplicitCardiacMechanicsSolver.cpp.

References ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::InitialiseContractionModels().

template<class ELASTICITY_SOLVER , unsigned DIM>

ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::~ExplicitCardiacMechanicsSolver

(

)

[inline, virtual]

Destructor

Definition at line 91 of file ExplicitCardiacMechanicsSolver.cpp.

References AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mContractionModelSystems.

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Member Function Documentation

template<class ELASTICITY_SOLVER , unsigned DIM>

void ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::GetActiveTensionAndTensionDerivs	(	double	currentFibreStretch,
		unsigned	currentQuadPointGlobalIndex,
		bool	assembleJacobian,
		double &	rActiveTension,
		double &	rDerivActiveTensionWrtLambda,
		double &	rDerivActiveTensionWrtDLambdaDt
	)			[inline, private, virtual]

Get the active tension and other info at the given quadrature point. This is an explicit solver so just sets the active tension, it doesn't set the derivatives. It stores the stretch for the next timestep.

Parameters:

	currentFibreStretch	The stretch in the fibre direction
	currentQuadPointGlobalIndex	Quadrature point integrand currently being evaluated at in AssembleOnElement.
	assembleJacobian	A bool stating whether to assemble the Jacobian matrix.
	rActiveTension	The returned active tension.
	rDerivActiveTensionWrtLambda	The returned dT_dLam, derivative of active tension wrt stretch. Unset in this explicit solver.
	rDerivActiveTensionWrtDLambdaDt	The returned dT_dLamDot, derivative of active tension wrt stretch rate. Unset in this explicit solver.

Implements AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >.

Definition at line 100 of file ExplicitCardiacMechanicsSolver.cpp.

References AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mContractionModelSystems, and AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mStretches.

template<class ELASTICITY_SOLVER , unsigned DIM>

void ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::InitialiseContractionModels

(

ContractionModelName

contractionModel

)

[inline, private]

Initialise contraction models for each quadrature point

Parameters:

contractionModel

The name of the contraction model (from the enumeration ContractionModel defined in AbstractContactionModel)

Definition at line 50 of file ExplicitCardiacMechanicsSolver.cpp.

References EXCEPTION, AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mContractionModelSystems, and AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mTotalQuadPoints.

Referenced by ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::ExplicitCardiacMechanicsSolver().

template<class ELASTICITY_SOLVER, unsigned DIM>

bool ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::IsImplicitSolver

(

)

[inline, private, virtual]

This solver is an explicit solver (overloaded pure method)

Implements AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >.

Definition at line 60 of file ExplicitCardiacMechanicsSolver.hpp.

template<class ELASTICITY_SOLVER , unsigned DIM>

void ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::Solve	(	double	time,
		double	nextTime,
		double	odeTimestep
	)			[inline, virtual]

Solve for the deformation using quasi-static nonlinear elasticity. (not dynamic nonlinear elasticity, despite the times taken in - just ONE deformation is solved for. The cell models are integrated explicitly over the time range using the ODE timestep provided then the active tension used to solve for the deformation

Parameters:

	time	the current time
	nextTime	the next time
	odeTimestep	the ODE timestep

Implements AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >.

Definition at line 121 of file ExplicitCardiacMechanicsSolver.cpp.

References AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mContractionModelSystems, AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mCurrentTime, AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mNextTime, AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mOdeTimestep, and AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::mStretches.

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

• heart/src/solver/mechanics/ExplicitCardiacMechanicsSolver.hpp
• heart/src/solver/mechanics/ExplicitCardiacMechanicsSolver.cpp