gmpMaterialDruckerPrager.h

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/************************************************************************
**
** Copyright (C) 2016 by Carlos Augusto Teixera Mendes
** All rights reserved.
**
** This file is part of the "GeMA" software. It's use should respect
** the terms in the license agreement that can be found together
** with this source code.
** It is provided AS IS, with NO WARRANTY OF ANY KIND,
** INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR
** A PARTICULAR PURPOSE.
**
************************************************************************/

#ifndef _GEMA_PLUGIN_MECHANICALMATERIAL_DRUCKER_PRAGER_H_
#define _GEMA_PLUGIN_MECHANICALMATERIAL_DRUCKER_PRAGER_H_

#include "gmpMaterialElastoplastic.h"
#include "gmpMechanicPoint.h"
#include "gmpFemPhysics.h"
#include "gmMathUtils.h"

class GMP_MECHANICAL_PHYSICS_API_EXPORT GmpMaterialDruckerPrager : public GmpMaterialElastoplastic
{
protected:
        enum ElementPropertyIds
        {
                COH_ID = GmpMaterialElastoplastic::NUM_PROPERTY_IDS, 
                PHI_ID, 
                PSI_ID, 

                // --- NO ADDING BELOW THIS LINE
                NUM_PROPERTY_IDS,  
        };

public:

        GmpMaterialDruckerPrager(int typeIndex, QString typeName, const GmLogCategory& logger)
                : GmpMaterialElastoplastic(typeIndex, typeName, logger) {}

        virtual ~GmpMaterialDruckerPrager() {}

        static GmpFemPhysicsCommonMaterial* instance(GmSimulationData* simulation, int typeIndex, QString typeName, const GmLogCategory& logger)
        {
    Q_UNUSED(simulation);
                return new GmpMaterialDruckerPrager(typeIndex, typeName, logger);
        }

        // Returns a map with material associated properties. 
        virtual const QVariantMap* materialMetaDataMap();

        // Returns the stresses according to an alternative return mapping algorithm
        virtual bool alternativeReturnAlgorithm(const GmElement*, GmMatrix&, const GmpMechanicPoint*, const GmVector*, unsigned, bool) const;

        virtual bool isIsotropic() const { return true; }

        virtual double cohesion(const GmElement* e, const GmVector* coord, int ip) const
        {
                return propertyAc(COH_ID)->scalarValueAt(e, coord, ip);
        }
        virtual double frictionAngle(const GmElement* e, const GmVector* coord, int ip) const
        {
                return propertyAc(PHI_ID)->scalarValueAt(e, coord, ip);
        }
        virtual double dilationAngle(const GmElement* e, const GmVector* coord, int ip) const
        {
                return propertyAc(PSI_ID)->scalarValueAt(e, coord, ip);
        }

        // Yield criterion
        virtual double yieldCriterion(const GmElement* e, const GmVector& s, const GmVector* coord, int ip, unsigned sc) const;
        virtual bool yieldStressGradient(const GmElement* e, GmVector& dfs, const GmVector& s, const GmVector* coord, int ip, unsigned sc, bool ips) const;
        virtual bool yieldHessian(const GmElement* e, GmMatrix& dfss, const GmVector& s, const GmVector* coord, int ip, unsigned sc, bool ips) const;

        // Plastic potential
        virtual double plasticFPotential(const GmElement* e, const GmVector& s, const GmVector* coord, int ip, unsigned sc) const;
        virtual bool flowVector(const GmElement* e, GmVector& dgs, const GmVector& s, const GmVector* coord, int ip, unsigned sc, bool ips) const;
        virtual bool flowVectorStressGradient(const GmElement* e, GmMatrix& dgss, const GmVector& s, const GmVector* coord, int ip, unsigned sc, bool ips) const;
  
  virtual double yieldStrengthRatio(const GmElement* e, const GmVector& S, const GmVector* coord, int ip, unsigned sc) const;

};

#endif