SolidMechanicsProblemDefinition.cpp

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#include "SolidMechanicsProblemDefinition.hpp"
#include "AbstractIncompressibleMaterialLaw.hpp"
#include "AbstractCompressibleMaterialLaw.hpp"

template<unsigned DIM>
SolidMechanicsProblemDefinition<DIM>::SolidMechanicsProblemDefinition(AbstractTetrahedralMesh<DIM,DIM>& rMesh)
    : ContinuumMechanicsProblemDefinition<DIM>(rMesh),
      mSolveUsingSnes(false)
{
}

template<unsigned DIM>
void SolidMechanicsProblemDefinition<DIM>::SetFixedNodes(std::vector<unsigned>& rFixedNodes, std::vector<c_vector<double,DIM> >& rFixedNodeLocations)
{
    assert(rFixedNodes.size()==rFixedNodeLocations.size());
    this->mDirichletNodes = rFixedNodes;

    this->mDirichletNodeValues.clear();
    for (unsigned i=0; i<this->mDirichletNodes.size(); i++)
    {
        unsigned index = this->mDirichletNodes[i];
        c_vector<double,DIM> displacement;
        for (unsigned j=0; j<DIM; j++)
        {
            double location = rFixedNodeLocations[i](j);

            // Compute the displacement, assuming the node is not free in this direction
            if (location != this->FREE)
            {
                displacement(j) = location - this->mrMesh.GetNode(index)->rGetLocation()[j];
            }
            else
            {
                displacement(j) = this->FREE;
            }
        }
        this->mDirichletNodeValues.push_back(displacement);
    }
}

template<unsigned DIM>
void SolidMechanicsProblemDefinition<DIM>::SetMaterialLaw(CompressibilityType compressibilityType,
                                                          AbstractMaterialLaw<DIM>* pMaterialLaw)
{
    mIsHomogeneousMaterial = true;
    mCompressibilityType = compressibilityType;

    mIncompressibleMaterialLaws.clear();
    mCompressibleMaterialLaws.clear();

    assert(pMaterialLaw);

    if (compressibilityType == INCOMPRESSIBLE)
    {
        AbstractIncompressibleMaterialLaw<DIM>* p_law = dynamic_cast<AbstractIncompressibleMaterialLaw<DIM>*>(pMaterialLaw);
        CheckCastSuccess(compressibilityType, p_law);
        mIncompressibleMaterialLaws.push_back(p_law);
    }
    else
    {
        AbstractCompressibleMaterialLaw<DIM>* p_law = dynamic_cast<AbstractCompressibleMaterialLaw<DIM>*>(pMaterialLaw);
        CheckCastSuccess(compressibilityType, p_law);
        mCompressibleMaterialLaws.push_back(p_law);
    }
}

template<unsigned DIM>
void SolidMechanicsProblemDefinition<DIM>::SetMaterialLaw(CompressibilityType compressibilityType,
                                                          std::vector<AbstractMaterialLaw<DIM>*>& rMaterialLaws)
{
    mIsHomogeneousMaterial = false;
    mCompressibilityType = compressibilityType;

    mIncompressibleMaterialLaws.clear();
    mCompressibleMaterialLaws.clear();

    assert(this->mrMesh.GetNumElements() == rMaterialLaws.size());

    if (compressibilityType == INCOMPRESSIBLE)
    {
        for (unsigned i=0; i<rMaterialLaws.size(); i++)
        {
            assert(rMaterialLaws[i]);
            AbstractIncompressibleMaterialLaw<DIM>* p_law = dynamic_cast<AbstractIncompressibleMaterialLaw<DIM>*>(rMaterialLaws[i]);
            CheckCastSuccess(compressibilityType, p_law);
            mIncompressibleMaterialLaws.push_back(p_law);
        }
    }
    else
    {
        for (unsigned i=0; i<rMaterialLaws.size(); i++)
        {
            assert(rMaterialLaws[i]);
            AbstractCompressibleMaterialLaw<DIM>* p_law = dynamic_cast<AbstractCompressibleMaterialLaw<DIM>*>(rMaterialLaws[i]);
            CheckCastSuccess(compressibilityType, p_law);
            mCompressibleMaterialLaws.push_back(p_law);
        }
    }
}

template<unsigned DIM>
bool SolidMechanicsProblemDefinition<DIM>::IsHomogeneousMaterial()
{
    // If this fails, SetMaterialLaw() hasn't been called
    assert(mIncompressibleMaterialLaws.size()!=0  ||  mCompressibleMaterialLaws.size()!=0 );
    return mIsHomogeneousMaterial;
}

template<unsigned DIM>
CompressibilityType SolidMechanicsProblemDefinition<DIM>::GetCompressibilityType()
{
    // If this fails, SetMaterialLaw() hasn't been called
    assert(mIncompressibleMaterialLaws.size()!=0  ||  mCompressibleMaterialLaws.size()!=0 );
    return mCompressibilityType;
}

template<unsigned DIM>
AbstractIncompressibleMaterialLaw<DIM>* SolidMechanicsProblemDefinition<DIM>::GetIncompressibleMaterialLaw(unsigned elementIndex)
{
    assert(mCompressibilityType==INCOMPRESSIBLE);
    assert(mIncompressibleMaterialLaws.size()>0);
    assert(mCompressibleMaterialLaws.size()==0);

    if (mIsHomogeneousMaterial)
    {
        return mIncompressibleMaterialLaws[0];
    }
    else
    {
        assert(elementIndex < this->mrMesh.GetNumNodes());
        return mIncompressibleMaterialLaws[elementIndex];
    }
}

template<unsigned DIM>
AbstractCompressibleMaterialLaw<DIM>* SolidMechanicsProblemDefinition<DIM>::GetCompressibleMaterialLaw(unsigned elementIndex)
{
    assert(mCompressibilityType == COMPRESSIBLE);
    assert(mIncompressibleMaterialLaws.size() == 0);
    assert(mCompressibleMaterialLaws.size() > 0);

    if (mIsHomogeneousMaterial)
    {
        return mCompressibleMaterialLaws[0];
    }
    else
    {
        assert(elementIndex < this->mrMesh.GetNumNodes());
        return mCompressibleMaterialLaws[elementIndex];
    }
}

template<unsigned DIM>
void SolidMechanicsProblemDefinition<DIM>::CheckCastSuccess(CompressibilityType compressibilityType,
                                                            AbstractMaterialLaw<DIM>* pMaterialLaw)
{
    if ((compressibilityType==INCOMPRESSIBLE) && (pMaterialLaw==nullptr))
    {
        // then dynamic_cast to AbstractIncompressibleMaterialLaw failed
        EXCEPTION("Compressibility type was declared as INCOMPRESSIBLE but a compressible material law was given");
    }

    if ((compressibilityType==COMPRESSIBLE) && (pMaterialLaw==nullptr))
    {
        // then dynamic_cast to AbstractCompressibleMaterialLaw failed
        EXCEPTION("Incompressibility type was declared as COMPRESSIBLE but an incompressible material law was given");
    }
}

template<unsigned DIM>
void SolidMechanicsProblemDefinition<DIM>::Validate()
{
    ContinuumMechanicsProblemDefinition<DIM>::Validate();

    if ((mIncompressibleMaterialLaws.size()==0)  &&  (mCompressibleMaterialLaws.size()==0))
    {
        EXCEPTION("No material law has been set");
    }
}

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