weakperiodicbc.h

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/*
 *
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 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2025   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  This library 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.
 *
 *  This program 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.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef WEAKPERIODICBC_H_
#define WEAKPERIODICBC_H_
 
#include <vector>
#include <iostream>
#include <memory>
 
#include "activebc.h"
#include "inputrecord.h"
#include "floatmatrix.h"
#include "floatarray.h"
#include "intarray.h"
#include "gausspoint.h"


#define _IFT_WeakPeriodicBoundaryCondition_Name "weakperiodicbc"
#define _IFT_WeakPeriodicBoundaryCondition_order "order"
#define _IFT_WeakPeriodicBoundaryCondition_descritizationType "descritizationtype"
#define _IFT_WeakPeriodicBoundaryCondition_dofids "dofids"
#define _IFT_WeakPeriodicBoundaryCondition_ngp "ngp"
#define _IFT_WeakPeriodicBoundaryCondition_gradient "gradient"
#define _IFT_WeakPeriodicBoundaryCondition_nlgeo "nlgeo"
#define _IFT_WeakPeriodicBoundaryCondition_elementSidesPositive "elementsidespositive"
#define _IFT_WeakPeriodicBoundaryCondition_elementSidesNegative "elementsidesnegative"
#define _IFT_WeakPeriodicBoundaryCondition_elementSidesPositiveSet "elementsidespositiveset"
#define _IFT_WeakPeriodicBoundaryCondition_elementSidesNegativeSet "elementsidesnegativeset"
 
namespace oofem {
 
class Node;
class Element;
 
enum basisType { monomial=0, trigonometric=1, legendre=2 };
class OOFEM_EXPORT WeakPeriodicBoundaryCondition : public ActiveBoundaryCondition
{
private:
 
    basisType useBasisType;
    int bcID;
    int orderOfPolygon;

    FloatArray g;

    int direction;

    IntArray surfaceIndexes;
 
    FloatArray smax, smin;
    bool doUpdateSminmax;

    int ngp;

    int ndof;

    int posSet;

    int negSet;

    IntArray dofids;

    signed int sideSign [ 2 ];

    std :: vector< int >side [ 2 ], element [ 2 ];

    std :: vector< double >directions;
 
    void giveEdgeNormal(FloatArray &answer, int element, int side);
 
    void updateSminmax();
 
    void updateDirection();
 
    double computeBaseFunctionValue(int baseID, FloatArray coordinate);
 
    double computeBaseFunctionValue1D(int baseID, double coordinate);
 
    double computeBaseFunctionValue2D(int baseID, FloatArray coordinate);
 
    std :: unique_ptr< Node > gammaDman;
    IntArray gamma_ids;
 
    double factorial(int n);
 
    double binomial(double n, int k);

    void getExponents(int n, int &i, int &j);

    void computeOrthogonalBasis();
 
    double computeProjectionCoefficient(int vIndex, int uIndex);

    FloatMatrix gsMatrix;
 
    void computeDeformationGradient(FloatMatrix &answer, Element *e, FloatArray *lcoord, TimeStep *tStep);

    int tcount;

    int ndofids;

    bool nlgeo;
 
public:
    WeakPeriodicBoundaryCondition(int n, Domain * d);
    virtual ~WeakPeriodicBoundaryCondition();
 
    void initializeFrom(InputRecord &ir) override;
    void postInitialize() override;
 
    basisType giveBasisType() { return useBasisType; }
 
    void assemble(SparseMtrx &answer, TimeStep *tStep, CharType type,
                  const UnknownNumberingScheme &r_s, const UnknownNumberingScheme &c_s, double scale = 1.0, void* lock=nullptr) override;
 
    void assembleVector(FloatArray &answer, TimeStep *tStep,
                        CharType type, ValueModeType mode,
                        const UnknownNumberingScheme &s, FloatArray *eNorm = nullptr, void* lock=nullptr) override;
 
    void giveInternalForcesVector(FloatArray &answer, TimeStep *tStep,
                                  CharType type, ValueModeType mode,
                                  const UnknownNumberingScheme &s, FloatArray *eNorm = nullptr, void* lock=nullptr);
 
    void giveExternalForcesVector(FloatArray &answer, TimeStep *tStep,
                                  CharType type, ValueModeType mode,
                                  const UnknownNumberingScheme &s, void*lock=nullptr);
 
    int giveNumberOfInternalDofManagers() override;
 
    DofManager *giveInternalDofManager(int i) override;
 
    void addElementSide(int elem, int side) override;
 
    const char *giveClassName() const override { return "WeakPeriodicBoundaryCondition"; }
    const char *giveInputRecordName() const override { return _IFT_WeakPeriodicBoundaryCondition_Name; }
 
protected:
    void computeElementTangent(FloatMatrix &answer, Element *e, int boundary, TimeStep *tStep);
};
}
#endif /* WEAKPERIODICBC_H_ */