Chaste  Release::2018.1
ExplicitCardiacMechanicsSolver.cpp
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35 
36 #include "ExplicitCardiacMechanicsSolver.hpp"
37 
38 template<class ELASTICITY_SOLVER,unsigned DIM>
40  ElectroMechanicsProblemDefinition<DIM>& rProblemDefinition,
41  std::string outputDirectory)
43  rProblemDefinition,
44  outputDirectory)
45 {
46 
47 }
48 
49 template<class ELASTICITY_SOLVER,unsigned DIM>
51 {
52 }
53 
54 template<class ELASTICITY_SOLVER,unsigned DIM>
56  unsigned currentQuadPointGlobalIndex,
57  bool assembleJacobian,
58  double& rActiveTension,
59  double& rDerivActiveTensionWrtLambda,
60  double& rDerivActiveTensionWrtDLambdaDt)
61 {
62  // The iterator should be pointing to the right place (note: it is incremented at the end of this method)
63  // This iterator is used so that we don't have to search the map
64  assert(this->mMapIterator->first==currentQuadPointGlobalIndex);
65  DataAtQuadraturePoint& r_data_at_quad_point = this->mMapIterator->second;
66 
67  // the active tensions have already been computed for each contraction model, so can
68  // return it straightaway..
69  rActiveTension = r_data_at_quad_point.ContractionModel->GetActiveTension();
70 
71  // these are unset
72  rDerivActiveTensionWrtLambda = 0.0;
73  rDerivActiveTensionWrtDLambdaDt = 0.0;
74 
75  // store the value of given for this quad point, so that it can be used when computing
76  // the active tension at the next timestep
77  r_data_at_quad_point.Stretch = currentFibreStretch;
78 
79  // increment the iterator
80  this->mMapIterator++;
81  if (this->mMapIterator==this->mQuadPointToDataAtQuadPointMap.end())
82  {
83  this->mMapIterator = this->mQuadPointToDataAtQuadPointMap.begin();
84  }
85 }
86 
87 template<class ELASTICITY_SOLVER,unsigned DIM>
88 void ExplicitCardiacMechanicsSolver<ELASTICITY_SOLVER,DIM>::Solve(double time, double nextTime, double odeTimestep)
89 {
90  assert(time < nextTime);
91  this->mCurrentTime = time;
92  this->mNextTime = nextTime;
93  this->mOdeTimestep = odeTimestep;
94 
95  // assemble the residual again so that mStretches is set (in GetActiveTensionAndTensionDerivs)
96  // using the current deformation.
97  this->AssembleSystem(true,false);
98 
99  // integrate contraction models
100  for (std::map<unsigned,DataAtQuadraturePoint>::iterator iter = this->mQuadPointToDataAtQuadPointMap.begin();
101  iter != this->mQuadPointToDataAtQuadPointMap.end();
102  iter++)
103  {
104  AbstractContractionModel* p_contraction_model = iter->second.ContractionModel;
105  double stretch = iter->second.Stretch;
106  p_contraction_model->SetStretchAndStretchRate(stretch, 0.0 /*dlam_dt*/);
107  p_contraction_model->RunAndUpdate(time, nextTime, odeTimestep);
108  }
109 
110  // solve
111  ELASTICITY_SOLVER::Solve();
112 }
113 
void GetActiveTensionAndTensionDerivs(double currentFibreStretch, unsigned currentQuadPointGlobalIndex, bool assembleJacobian, double &rActiveTension, double &rDerivActiveTensionWrtLambda, double &rDerivActiveTensionWrtDLambdaDt)
virtual void SetStretchAndStretchRate(double stretch, double stretchRate)=0
virtual double GetActiveTension()=0
void Solve(double time, double nextTime, double odeTimestep)
AbstractContractionModel * ContractionModel
virtual void RunAndUpdate(double startTime, double endTime, double timeStep)=0
ExplicitCardiacMechanicsSolver(QuadraticMesh< DIM > &rQuadMesh, ElectroMechanicsProblemDefinition< DIM > &rProblemDefinition, std::string outputDirectory)