xfemCohesiveExponentialSoftening.h

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/************************************************************************
**
** Copyright (C) 2014 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_XFEM_MATERIAL_COHESIVE_EXPONENTIALSOFTENING_H_
#define _GEMA_XFEM_MATERIAL_COHESIVE_EXPONENTIALSOFTENING_H_


#include "xfemMaterial.h"
#include "gmpFemPhysics.h"
#include "gmMathUtils.h"

class XfemCohesiveExponentialSoftening : public XfemMaterial
{
protected:
  enum CohesiveExpPropertyIds
  {              
    Ed_ID = XfemMaterial::NUM_PROPERTY_IDS,
    Sni_ID,      
    Tsi_ID,      
    Tti_ID,      

    // --- NO ADDING BELOW THIS LINE
    NUM_PROPERTY_IDS,  
  };
  // Check the damage initiation criteria
  virtual double damageInitiationcriteria(const GmElement* e, GmVector strain, const GmVector* coord, int ip, int nc) const;

  // returns the scalar damage value "Sdvg"
  virtual double scalarDamageVariable(const GmElement* e, const GmVector* coord, int ip, double de, double di, double df) const;

  // returns the gradient of the damage variable in relation to the equivalente displacement
  // Hd = d(Sdvg)/d(del_e)
  virtual double deriveDamage(const GmElement* e, const GmVector* coord, int ip, double de, double di, double df) const;

public:
  XfemCohesiveExponentialSoftening(int typeIndex, QString typeName, const GmLogCategory& logger)
    :XfemMaterial(typeIndex, typeName, logger){}

  virtual ~XfemCohesiveExponentialSoftening() {}

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

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

  // Returns the constitutive tangent matrix
  virtual void tangentModulus(const GmElement* e, GmMatrix& Dep, const GmpMechanicPoint* mp, const GmVector* coord, unsigned nc) const;

  // Returns the stresses according to the material behavior adopted
  virtual void returnMapping(const GmElement* e, GmMatrix& Dep, const GmpMechanicPoint* mp, const GmVector* coord, unsigned nc) const;

  virtual double normalStrength(const GmElement* e, const GmVector* coord, int ip) const
  {
    return propertyAc(Sni_ID)->scalarValueAt(e, coord, ip);
  }

  virtual double shearStrength(const GmElement* e, const GmVector* coord, int ip) const
  {
    return propertyAc(Tsi_ID)->scalarValueAt(e, coord, ip);
  }

  virtual double shearStrengthTwo(const GmElement* e, const GmVector* coord, int ip) const
  {
    return propertyAc(Tti_ID)->scalarValueAt(e, coord, ip);
  }

  virtual double equivalentSeparation(const GmElement* e, const GmVector* coord, int ip) const
  {
    return propertyAc(Ed_ID)->scalarValueAt(e, coord, ip);
  }

};
#endif