ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM > Class Template Reference

#include <ExplicitCardiacMechanicsSolver.hpp>

Inheritance diagram for ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >:

Collaboration diagram for ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >:

Public Member Functions
	ExplicitCardiacMechanicsSolver (QuadraticMesh< DIM > &rQuadMesh, ElectroMechanicsProblemDefinition< DIM > &rProblemDefinition, std::string outputDirectory)
virtual	~ExplicitCardiacMechanicsSolver ()
void	Solve (double time, double nextTime, double odeTimestep)
Public Member Functions inherited from AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >
	AbstractCardiacMechanicsSolver (QuadraticMesh< DIM > &rQuadMesh, ElectroMechanicsProblemDefinition< DIM > &rProblemDefinition, std::string outputDirectory)
virtual	~AbstractCardiacMechanicsSolver ()
void	SetFineCoarseMeshPair (FineCoarseMeshPair< DIM > *pMeshPair)
unsigned	GetTotalNumQuadPoints ()
virtual GaussianQuadratureRule < DIM > *	GetQuadratureRule ()
std::map< unsigned, DataAtQuadraturePoint > &	rGetQuadPointToDataAtQuadPointMap ()
void	SetConstantFibreSheetDirections (const c_matrix< double, DIM, DIM > &rFibreSheetMatrix)
void	SetVariableFibreSheetDirections (const FileFinder &rOrthoFile, bool definedPerQuadraturePoint)
void	SetCalciumAndVoltage (std::vector< double > &rCalciumConcentrations, std::vector< double > &rVoltages)
void	ComputeDeformationGradientAndStretchInEachElement (std::vector< c_matrix< double, DIM, DIM > > &rDeformationGradients, std::vector< double > &rStretches)
Public Member Functions inherited from AbstractCardiacMechanicsSolverInterface< DIM >
	AbstractCardiacMechanicsSolverInterface ()
virtual	~AbstractCardiacMechanicsSolverInterface ()

Private Member Functions
bool	IsImplicitSolver ()
void	GetActiveTensionAndTensionDerivs (double currentFibreStretch, unsigned currentQuadPointGlobalIndex, bool assembleJacobian, double &rActiveTension, double &rDerivActiveTensionWrtLambda, double &rDerivActiveTensionWrtDLambdaDt)

Friends
class	TestExplicitCardiacMechanicsSolver

Additional Inherited Members
Protected Member Functions inherited from AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >
void	AddActiveStressAndStressDerivative (c_matrix< double, DIM, DIM > &rC, unsigned elementIndex, unsigned currentQuadPointGlobalIndex, c_matrix< double, DIM, DIM > &rT, FourthOrderTensor< DIM, DIM, DIM, DIM > &rDTdE, bool addToDTdE)
void	SetupChangeOfBasisMatrix (unsigned elementIndex, unsigned currentQuadPointGlobalIndex)
void	Initialise ()
Protected Attributes inherited from AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >
std::map< unsigned, DataAtQuadraturePoint >	mQuadPointToDataAtQuadPointMap
std::map< unsigned, DataAtQuadraturePoint > ::iterator	mMapIterator
FineCoarseMeshPair< DIM > *	mpMeshPair
unsigned	mTotalQuadPoints
double	mCurrentTime
double	mNextTime
double	mOdeTimestep
c_matrix< double, DIM, DIM >	mConstantFibreSheetDirections
std::vector< c_matrix< double, DIM, DIM > > *	mpVariableFibreSheetDirections
bool	mFibreSheetDirectionsDefinedByQuadraturePoint
c_vector< double, DIM >	mCurrentElementFibreDirection
c_vector< double, DIM >	mCurrentElementSheetDirection
c_vector< double, DIM >	mCurrentElementSheetNormalDirection
ElectroMechanicsProblemDefinition < DIM > &	mrElectroMechanicsProblemDefinition
Static Protected Attributes inherited from AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >
static const unsigned	NUM_VERTICES_PER_ELEMENT = ELASTICITY_SOLVER::NUM_VERTICES_PER_ELEMENT

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 61 of file ExplicitCardiacMechanicsSolver.hpp.

Constructor & Destructor Documentation

template<class ELASTICITY_SOLVER , unsigned DIM>

ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::ExplicitCardiacMechanicsSolver	(	QuadraticMesh< DIM > &	rQuadMesh,
		ElectroMechanicsProblemDefinition< DIM > &	rProblemDefinition,
		std::string	outputDirectory
	)

Constructor

Parameters

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 39 of file ExplicitCardiacMechanicsSolver.cpp.

template<class ELASTICITY_SOLVER , unsigned DIM>

ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::~ExplicitCardiacMechanicsSolver ( )

virtual

Destructor

Definition at line 50 of file ExplicitCardiacMechanicsSolver.cpp.

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  )

privatevirtual

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 55 of file ExplicitCardiacMechanicsSolver.cpp.

References DataAtQuadraturePoint_::ContractionModel, AbstractContractionModel::GetActiveTension(), and DataAtQuadraturePoint_::Stretch.

template<class ELASTICITY_SOLVER, unsigned DIM>

bool ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::IsImplicitSolver ( )

inlineprivatevirtual

Returns

true if this solver is an explicit solver (overloaded pure method)

Implements AbstractCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >.

Definition at line 67 of file ExplicitCardiacMechanicsSolver.hpp.

template<class ELASTICITY_SOLVER , unsigned DIM>

void ExplicitCardiacMechanicsSolver< ELASTICITY_SOLVER, DIM >::Solve ( double  time, double  nextTime, double  odeTimestep  )

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 89 of file ExplicitCardiacMechanicsSolver.cpp.

References AbstractContractionModel::RunAndUpdate(), and AbstractContractionModel::SetStretchAndStretchRate().

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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