idmgrad.h

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/*
 *
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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 idmgrad_h
#define idmgrad_h
 
#include "Materials/ConcreteMaterials/idm1.h"
#include "../sm/Materials/graddamagematerialextensioninterface.h"
 
#define _IFT_IsotropicGradientDamageMaterial_Name "idmgrad"
 
#define _IFT_IsotropicGradientDamageMaterial_formulationType "formtype"
#define _IFT_IsotropicGradientDamageMaterial_di_rho "di_rho"
#define _IFT_IsotropicGradientDamageMaterial_di_eta "di_eta"
 
namespace oofem {
class IsotropicGradientDamageMaterial : public IsotropicDamageMaterial1, GradientDamageMaterialExtensionInterface
{
protected:

    enum GradientDamageFormulationType {
        GDFT_Standard = 0,
        GDFT_DecreasingInteractions = 1,
        GDFT_Eikonal = 2
    };
 
    GradientDamageFormulationType gradientDamageFormulationType = GDFT_Standard;
 
    double di_rho = 0.;
    double di_eta = 0.;
 
 
public:
    IsotropicGradientDamageMaterial(int n, Domain *d);
 
    std::unique_ptr<MaterialStatus> CreateStatus(GaussPoint *gp) const override;
    // identification and auxiliary functions
    const char *giveClassName() const override { return "IsotropicGradientDamageMaterial"; }
    const char *giveInputRecordName() const override { return _IFT_IsotropicGradientDamageMaterial_Name; }
    void initializeFrom(InputRecord &ir) override;
 
    Interface *giveInterface(InterfaceType t) override {
        if ( t == GradientDamageMaterialExtensionInterfaceType ) {
            return static_cast< GradientDamageMaterialExtensionInterface * >( this );
        } else {
            return nullptr;
        }
    }
    bool hasMaterialModeCapability(MaterialMode mode) const override;
 
    void giveGradientDamageStiffnessMatrix_uu(FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) override;
    void giveGradientDamageStiffnessMatrix_du(FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) override;
    void giveGradientDamageStiffnessMatrix_ud(FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) override;
    void giveGradientDamageStiffnessMatrix_dd_NN(FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) override;
    void giveGradientDamageStiffnessMatrix_dd_BB(FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) override;
    void giveGradientDamageStiffnessMatrix_dd_BN(FloatMatrix &answer, MatResponseMode mode, GaussPoint *gp, TimeStep *tStep) override;
 
    void giveRealStressVectorGradientDamage(FloatArray &answer1, double &answer2, GaussPoint *gp, const FloatArray &totalStrain, double nonlocalCumulatedStrain, TimeStep *tStep) override;
 
    void giveStiffnessMatrix(FloatMatrix &answer,  MatResponseMode rMode, GaussPoint *gp, TimeStep *tStep) const override;
    void computeLocalDamageDrivingVariable(double &answer, GaussPoint *gp, TimeStep *tStep) override { }
    void giveNonlocalInternalForces_N_factor(double &answer, double nlddv, GaussPoint *gp, TimeStep *tStep) override;
    void giveNonlocalInternalForces_B_factor(FloatArray &answer, const FloatArray &nlddv, GaussPoint *gp, TimeStep *tStep) override;
protected:
    double computeInternalLength(GaussPoint *gp);
    int giveDimension(GaussPoint *gp);
 
    double computeEikonalInternalLength_a(GaussPoint *gp);
    double computeEikonalInternalLength_b(GaussPoint *gp);
    double computeEikonalInternalLength_aPrime(GaussPoint *gp);
    double computeEikonalInternalLength_bPrime(GaussPoint *gp);
};
 
 
 
 

class IsotropicGradientDamageMaterialStatus : public IsotropicDamageMaterial1Status, public GradientDamageMaterialStatusExtensionInterface
{
public:
    IsotropicGradientDamageMaterialStatus(GaussPoint *g);
 
    const char *giveClassName() const override { return "IsotropicGradientDamageMaterialStatus"; }
 
    void initTempStatus() override;
    void updateYourself(TimeStep *) override;
};
} // end namespace oofem
#endif // idmgrad_h