ContinuumMechanicsProblemDefinition.hpp

/*

Copyright (C) University of Oxford, 2005-2011

University of Oxford means the Chancellor, Masters and Scholars of the
University of Oxford, having an administrative office at Wellington
Square, Oxford OX1 2JD, UK.

This file is part of Chaste.

Chaste is free software: you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation, either version 2.1 of the License, or
(at your option) any later version.

Chaste is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
License for more details. The offer of Chaste under the terms of the
License is subject to the License being interpreted in accordance with
English Law and subject to any action against the University of Oxford
being under the jurisdiction of the English Courts.

You should have received a copy of the GNU Lesser General Public License
along with Chaste. If not, see <http://www.gnu.org/licenses/>.

*/

#ifndef CONTINUUMMECHANICSPROBLEMDEFINITION_HPP_
#define CONTINUUMMECHANICSPROBLEMDEFINITION_HPP_

#include "QuadraticMesh.hpp"
#include "UblasCustomFunctions.hpp"
#include "AbstractIncompressibleMaterialLaw.hpp"
#include "AbstractCompressibleMaterialLaw.hpp"
#include "CompressibilityType.hpp"


typedef enum BodyForceType_
{
    CONSTANT_BODY_FORCE,
    FUNCTIONAL_BODY_FORCE
} BodyForceType;

typedef enum TractionBoundaryConditionType_
{
    NO_TRACTIONS,
    ELEMENTWISE_TRACTION,
    FUNCTIONAL_TRACTION,
    PRESSURE_ON_DEFORMED
} TractionBoundaryConditionType;


template<unsigned DIM>
class ContinuumMechanicsProblemDefinition
{
public:
    static const double FREE; // set to DBL_MAX

protected:
    QuadraticMesh<DIM>& mrMesh;

    double mDensity;

    // body force

    BodyForceType mBodyForceType;

    c_vector<double,DIM> mConstantBodyForce;

    c_vector<double,DIM> (*mpBodyForceFunction)(c_vector<double,DIM>& rX, double t);

    // tractions

    TractionBoundaryConditionType mTractionBoundaryConditionType;

    std::vector<BoundaryElement<DIM-1,DIM>*> mTractionBoundaryElements;

    std::vector<c_vector<double,DIM> > mElementwiseTractions;

    double mNormalPressure;

    c_vector<double,DIM> (*mpTractionBoundaryConditionFunction)(c_vector<double,DIM>& rX, double t);

    // Dirichlet boundary conditions

    std::vector<unsigned> mDirichletNodes;

    std::vector<c_vector<double,DIM> > mDirichletNodeValues;


public:
    ContinuumMechanicsProblemDefinition(QuadraticMesh<DIM>& rMesh);

    virtual ~ContinuumMechanicsProblemDefinition()
    {
    }


    void SetDensity(double density);

    double GetDensity();

    void SetZeroDirichletNodes(std::vector<unsigned>& rZeroDirichletNodes);

    // No method here for setting non-zero Dirichlet BCs - these are in the subclasses..

    std::vector<unsigned>& rGetDirichletNodes();

    std::vector<c_vector<double,DIM> >& rGetDirichletNodeValues();


    void SetBodyForce(c_vector<double,DIM> bodyForce);

    void SetBodyForce(c_vector<double,DIM> (*pFunction)(c_vector<double,DIM>& rX, double t));

    c_vector<double,DIM> GetBodyForce(c_vector<double,DIM>& rX, double t = 0.0);

    BodyForceType GetBodyForceType();

    c_vector<double,DIM> GetConstantBodyForce();

    c_vector<double,DIM> EvaluateBodyForceFunction(c_vector<double,DIM>& rX, double t);

    TractionBoundaryConditionType GetTractionBoundaryConditionType();

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

    void SetTractionBoundaryConditions(std::vector<BoundaryElement<DIM-1,DIM>*> rTractionBoundaryElements,
                                       c_vector<double,DIM> (*pFunction)(c_vector<double,DIM>& rX, double t));

    void SetApplyNormalPressureOnDeformedSurface(std::vector<BoundaryElement<DIM-1,DIM>*> rTractionBoundaryElements,
                                                 double normalPressure);

    std::vector<BoundaryElement<DIM-1,DIM>*>& rGetTractionBoundaryElements();

    std::vector<c_vector<double,DIM> >& rGetElementwiseTractions();

    double GetNormalPressure();


    c_vector<double,DIM> EvaluateTractionFunction(c_vector<double,DIM>& rX, double t);

    virtual void Validate();
};


#endif // CONTINUUMMECHANICSPROBLEMDEFINITION_HPP_