structuralpenaltycontactbc.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 structuralpenaltycontactbc_h
#define structuralpenaltycontactbc_h
 
 
#include "Contact/contactbc.h"
#include "Contact/contactpoint.h"
#include "ContactSurface/structuralfecontactsurface.h"


#define _IFT_StructuralPenaltyContactBoundaryCondition_Name "structuralpenaltycontactbc"
#define _IFT_StructuralPenaltyContactBoundaryCondition_penaltyNormal "pn"
#define _IFT_StructuralPenaltyContactBoundaryCondition_penaltyTangential "pt"
#define _IFT_StructuralPenaltyContactBoundaryCondition_friction "friction"
 
#define _IFT_StructuralPenaltyContactBoundaryCondition_masterSurfaceNum "mastersurface"
#define _IFT_StructuralPenaltyContactBoundaryCondition_slaveSurfaceNum "slavesurface"
#define _IFT_StructuralPenaltyContactBoundaryCondition_nsd "nsd"
#define _IFT_StructuralPenaltyContactBoundaryCondition_algo "algo"

 
namespace oofem {
class Domain;
class SparseMtrx;
class TimeStep;
class DofManager;
class UnknownNumberingScheme;
class FloatMatrix;

 
 
enum class ContactProcess{ None, Sticking, Sliding};
  
 
class OOFEM_EXPORT StructuralPenaltyContactBoundaryCondition : public ContactBoundaryCondition
{
private:
    double penalty_normal;  
    double penalty_tangential; 
    double friction; 
    int surface_dimension; 
    int algo;  
    
    //@todo: move to contact search algorithm
    int masterSurfaceNumber;
    int slaveSurfaceNumber;
    IntArray masterSurfaceElements;
    IntArray slaveSurfaceElements;
    // should be generalized to structural contact surface, i.e., a surface that is not necessarly discretized into finite elements
    StructuralFEContactSurface *masterContactSurface;
    StructuralFEContactSurface *slaveContactSurface;
 
public:
    StructuralPenaltyContactBoundaryCondition(int n, Domain *d) : ContactBoundaryCondition(n, d) { }
    virtual ~StructuralPenaltyContactBoundaryCondition() {};
    // initialization, i.e., reading input filex
    void initializeFrom(InputRecord &ir) override;
    void postInitialize() override;
    virtual const char *giveClassName() const override { return "StructuralPenaltyContactBoundaryCondition"; }
    virtual const char *giveInputRecordName() const override { return _IFT_StructuralPenaltyContactBoundaryCondition_Name; }
    //
    void setupContactSearchAlgorithm() override;
private:
    // compute tangent stiffness matrix
    void  computeTangentFromContact(FloatMatrix &answer, ContactPair *cp, TimeStep *tStep) override;
    // compute internal forces
    void computeInternalForcesFromContact(FloatArray &answer, ContactPair *cp, TimeStep *tStep) override;
    void computeTractions(double& normalTraction, FloatArray &tangentialTraction, FloatArray &tangentialTractionTrial, ContactProcess& mode, ContactPair* contactPair, TimeStep *tStep);
    // location arrays
    void giveLocationArrays(std::vector< IntArray > &rows, std::vector< IntArray > &cols, CharType type, const UnknownNumberingScheme &r_s, const UnknownNumberingScheme &c_s) override;
 private:
    FloatMatrix computeContravariantMetric(const std::vector<FloatArray> &tangent_vectors);
    FloatMatrix computeCovariantMetric(const std::vector<FloatArray> &tangent_vectors);
 
 
    
};
} // end namespace oofem
#endif // node2segmentpenaltycontact_h