ContinuumMechanicsProblemDefinition.cpp

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#include <limits>

#include "ContinuumMechanicsProblemDefinition.hpp"
#include "AbstractIncompressibleMaterialLaw.hpp"
#include "AbstractCompressibleMaterialLaw.hpp"


template<unsigned DIM>
const double ContinuumMechanicsProblemDefinition<DIM>::FREE = std::numeric_limits<double>::max();

template<unsigned DIM>
ContinuumMechanicsProblemDefinition<DIM>::ContinuumMechanicsProblemDefinition(AbstractTetrahedralMesh<DIM,DIM>& rMesh)
    : mrMesh(rMesh),
      mDensity(1.0),
      mBodyForceType(CONSTANT_BODY_FORCE),
      mConstantBodyForce(zero_vector<double>(DIM)),
      mTractionBoundaryConditionType(NO_TRACTIONS),
      mVerboseDuringSolve(false)
{
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetDensity(double density)
{
    assert(density>0.0);
    mDensity = density;
}

template<unsigned DIM>
double ContinuumMechanicsProblemDefinition<DIM>::GetDensity()
{
    return mDensity;
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetBodyForce(c_vector<double,DIM> bodyForce)
{
    mBodyForceType = CONSTANT_BODY_FORCE;
    mConstantBodyForce = bodyForce;
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetBodyForce(c_vector<double,DIM> (*pFunction)(c_vector<double,DIM>& rX, double t))
{
    mBodyForceType = FUNCTIONAL_BODY_FORCE;
    mpBodyForceFunction = pFunction;
}

template<unsigned DIM>
BodyForceType ContinuumMechanicsProblemDefinition<DIM>::GetBodyForceType()
{
    return mBodyForceType;
}

template<unsigned DIM>
c_vector<double,DIM> ContinuumMechanicsProblemDefinition<DIM>::GetConstantBodyForce()
{
    assert(mBodyForceType==CONSTANT_BODY_FORCE);
    return mConstantBodyForce;
}

template<unsigned DIM>
c_vector<double,DIM> ContinuumMechanicsProblemDefinition<DIM>::EvaluateBodyForceFunction(c_vector<double,DIM>& rX, double t)
{
    assert(mBodyForceType==FUNCTIONAL_BODY_FORCE);
    return (*mpBodyForceFunction)(rX,t);
}

template<unsigned DIM>
c_vector<double,DIM> ContinuumMechanicsProblemDefinition<DIM>::GetBodyForce(c_vector<double,DIM>& rX, double t)
{
    switch(mBodyForceType)
    {
        case CONSTANT_BODY_FORCE:
        {
            return mConstantBodyForce;
        }
        case FUNCTIONAL_BODY_FORCE:
        {
            return (*mpBodyForceFunction)(rX,t);
        }
        default:
            NEVER_REACHED;
    }
}

template<unsigned DIM>
TractionBoundaryConditionType ContinuumMechanicsProblemDefinition<DIM>::GetTractionBoundaryConditionType()
{
    return mTractionBoundaryConditionType;
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetTractionBoundaryConditions(std::vector<BoundaryElement<DIM-1,DIM>*>& rTractionBoundaryElements,
                                                                             std::vector<c_vector<double,DIM> >& rElementwiseTractions)
{

    assert(rTractionBoundaryElements.size()==rElementwiseTractions.size());
    mTractionBoundaryConditionType = ELEMENTWISE_TRACTION;
    mTractionBoundaryElements = rTractionBoundaryElements;
    mElementwiseTractions = rElementwiseTractions;
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetTractionBoundaryConditions(std::vector<BoundaryElement<DIM-1,DIM>*>& rTractionBoundaryElements,
                                                                             c_vector<double,DIM> (*pFunction)(c_vector<double,DIM>& rX, double t))
{
    mTractionBoundaryConditionType=FUNCTIONAL_TRACTION;
    mTractionBoundaryElements = rTractionBoundaryElements;
    mpTractionBoundaryConditionFunction = pFunction;
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetApplyNormalPressureOnDeformedSurface(std::vector<BoundaryElement<DIM-1,DIM>*>& rTractionBoundaryElements,
                                                                                       double normalPressure)
{
    mTractionBoundaryConditionType = PRESSURE_ON_DEFORMED;
    mTractionBoundaryElements = rTractionBoundaryElements;
    mNormalPressure = normalPressure;
    mOriginalNormalPressure = normalPressure;

}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetApplyNormalPressureOnDeformedSurface(std::vector<BoundaryElement<DIM-1,DIM>*>& rTractionBoundaryElements,
                                                                                       double (*pFunction)(double t))
{
    mTractionBoundaryConditionType = FUNCTIONAL_PRESSURE_ON_DEFORMED;
    mTractionBoundaryElements = rTractionBoundaryElements;
    mpNormalPressureFunction = pFunction;
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetZeroDirichletNodes(std::vector<unsigned>& rZeroDirichletNodes)
{
    mDirichletNodes = rZeroDirichletNodes;

    for (unsigned i=0; i<mDirichletNodes.size(); i++)
    {
        assert(mDirichletNodes[i] < mrMesh.GetNumNodes());
    }

    mDirichletNodeValues.clear();
    for (unsigned i=0; i<mDirichletNodes.size(); i++)
    {
        mDirichletNodeValues.push_back(zero_vector<double>(DIM));
    }
}

template<unsigned DIM>
std::vector<unsigned>& ContinuumMechanicsProblemDefinition<DIM>::rGetDirichletNodes()
{
    return mDirichletNodes;
}

template<unsigned DIM>
std::vector<c_vector<double,DIM> >& ContinuumMechanicsProblemDefinition<DIM>::rGetDirichletNodeValues()
{
    return mDirichletNodeValues;
}

template<unsigned DIM>
std::vector<BoundaryElement<DIM-1,DIM>*>& ContinuumMechanicsProblemDefinition<DIM>::rGetTractionBoundaryElements()
{
    return mTractionBoundaryElements;
}

template<unsigned DIM>
std::vector<c_vector<double,DIM> >& ContinuumMechanicsProblemDefinition<DIM>::rGetElementwiseTractions()
{
    assert(mTractionBoundaryConditionType==ELEMENTWISE_TRACTION);
    return mElementwiseTractions;
}

template<unsigned DIM>
double ContinuumMechanicsProblemDefinition<DIM>::GetNormalPressure()
{
    assert(mTractionBoundaryConditionType==PRESSURE_ON_DEFORMED);
    return mNormalPressure;
}

template<unsigned DIM>
c_vector<double,DIM> ContinuumMechanicsProblemDefinition<DIM>::EvaluateTractionFunction(c_vector<double,DIM>& rX, double t)
{
    assert(mTractionBoundaryConditionType==FUNCTIONAL_TRACTION);
    return (*mpTractionBoundaryConditionFunction)(rX,t);
}

template<unsigned DIM>
double ContinuumMechanicsProblemDefinition<DIM>::EvaluateNormalPressureFunction(double t)
{
    assert(mTractionBoundaryConditionType==FUNCTIONAL_PRESSURE_ON_DEFORMED);
    return (*mpNormalPressureFunction)(t);
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::SetPressureScaling(double scaleFactor)
{
    assert(mTractionBoundaryConditionType==PRESSURE_ON_DEFORMED);
    mNormalPressure = mOriginalNormalPressure*scaleFactor;
}

template<unsigned DIM>
void ContinuumMechanicsProblemDefinition<DIM>::Validate()
{
    if (mDirichletNodes.size() == 0)
    {
        EXCEPTION("No Dirichlet boundary conditions (eg fixed displacement or fixed flow) have been set");
    }
}

// Explicit instantiation
template class ContinuumMechanicsProblemDefinition<2>;
template class ContinuumMechanicsProblemDefinition<3>;