ExplicitCardiacMechanicsAssembler< DIM > Class Template Reference

#include <ExplicitCardiacMechanicsAssembler.hpp>

Inherits AbstractCardiacMechanicsAssembler< DIM >.

Collaboration diagram for ExplicitCardiacMechanicsAssembler< DIM >:
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List of all members.

Public Member Functions

 ExplicitCardiacMechanicsAssembler (ContractionModel contractionModel, QuadraticMesh< DIM > *pQuadMesh, std::string outputDirectory, std::vector< unsigned > &rFixedNodes, AbstractIncompressibleMaterialLaw< DIM > *pMaterialLaw=NULL)
virtual ~ExplicitCardiacMechanicsAssembler ()
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)

Friends

class TestExplicitCardiacMechanicsAssembler

Detailed Description

template<unsigned DIM>
class ExplicitCardiacMechanicsAssembler< DIM >

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

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 49 of file ExplicitCardiacMechanicsAssembler.hpp.

Constructor & Destructor Documentation

template<unsigned DIM>
ExplicitCardiacMechanicsAssembler< DIM >::ExplicitCardiacMechanicsAssembler ( ContractionModel  contractionModel,
QuadraticMesh< DIM > *  pQuadMesh,
std::string  outputDirectory,
std::vector< unsigned > &  rFixedNodes,
AbstractIncompressibleMaterialLaw< DIM > *  pMaterialLaw = NULL 
) [inline]

Constructor

Parameters:
contractionModel The contraction model.
pQuadMesh A pointer to the mesh.
outputDirectory The output directory, relative to TEST_OUTPUT
rFixedNodes The fixed nodes
pMaterialLaw The material law for the tissue. Defaults to NULL, in which case a default material law is used.

Definition at line 38 of file ExplicitCardiacMechanicsAssembler.cpp.

References AbstractCardiacMechanicsAssembler< DIM >::mContractionModelSystems, and AbstractCardiacMechanicsAssembler< DIM >::mTotalQuadPoints.

template<unsigned DIM>
ExplicitCardiacMechanicsAssembler< DIM >::~ExplicitCardiacMechanicsAssembler (  )  [inline, virtual]

Destructor

Definition at line 99 of file ExplicitCardiacMechanicsAssembler.cpp.

References AbstractCardiacMechanicsAssembler< DIM >::mContractionModelSystems.

Member Function Documentation

template<unsigned DIM>
void ExplicitCardiacMechanicsAssembler< 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 assembler 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 AbstractCardiacMechanicsAssembler< DIM >.

Definition at line 108 of file ExplicitCardiacMechanicsAssembler.cpp.

References AbstractCardiacMechanicsAssembler< DIM >::mContractionModelSystems, and AbstractCardiacMechanicsAssembler< DIM >::mStretches.

template<unsigned DIM>
bool ExplicitCardiacMechanicsAssembler< DIM >::IsImplicitSolver (  )  [inline, private, virtual]

This solver is an explicit solver (overloaded pure method)

Implements AbstractCardiacMechanicsAssembler< DIM >.

Definition at line 55 of file ExplicitCardiacMechanicsAssembler.hpp.

template<unsigned DIM>
void ExplicitCardiacMechanicsAssembler< 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 AbstractCardiacMechanicsAssembler< DIM >.

Definition at line 129 of file ExplicitCardiacMechanicsAssembler.cpp.

References NonlinearElasticityAssembler< DIM >::AssembleSystem(), AbstractCardiacMechanicsAssembler< DIM >::mContractionModelSystems, AbstractCardiacMechanicsAssembler< DIM >::mCurrentTime, AbstractCardiacMechanicsAssembler< DIM >::mNextTime, AbstractCardiacMechanicsAssembler< DIM >::mOdeTimestep, and AbstractCardiacMechanicsAssembler< DIM >::mStretches.

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