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/**
* @file material_cohesive.hh
*
* @author Seyedeh Mohadeseh Taheri Mousavi <mohadeseh.taherimousavi@epfl.ch>
* @author Marco Vocialta <marco.vocialta@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Feb 22 2012
* @date last modification: Tue Jul 29 2014
*
* @brief Specialization of the material class for cohesive elements
*
* @section LICENSE
*
* Copyright (©) 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu 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 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "material.hh"
#include "fe_engine_template.hh"
#include "aka_common.hh"
#include "cohesive_internal_field.hh"
#include "cohesive_element_inserter.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_MATERIAL_COHESIVE_HH__
#define __AKANTU_MATERIAL_COHESIVE_HH__
/* -------------------------------------------------------------------------- */
namespace akantu {
class SolidMechanicsModelCohesive;
}
__BEGIN_AKANTU__
class MaterialCohesive : public Material {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
typedef FEEngineTemplate<IntegratorGauss,
ShapeLagrange, _ek_cohesive> MyFEEngineCohesiveType;
public:
MaterialCohesive(SolidMechanicsModel& model, const ID & id = "");
virtual ~MaterialCohesive();
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// initialize the material computed parameter
virtual void initMaterial();
/// compute tractions (including normals and openings)
void computeTraction(GhostType ghost_type = _not_ghost);
/// assemble residual
void assembleResidual(GhostType ghost_type = _not_ghost);
/// compute reversible and total energies by element
void computeEnergies();
/// check stress for cohesive elements' insertion, by default it
/// also updates the cohesive elements' data
virtual void checkInsertion(bool check_only = false) {
AKANTU_DEBUG_TO_IMPLEMENT();
}
/// check delta_max for cohesive elements in case of no convergence
/// in the solveStep (only for extrinsic-implicit)
virtual void checkDeltaMax(GhostType ghost_type = _not_ghost) {
AKANTU_DEBUG_TO_IMPLEMENT();
}
/// reset variables when convergence is reached (only for
/// extrinsic-implicit)
virtual void resetVariables(GhostType ghost_type = _not_ghost) {
AKANTU_DEBUG_TO_IMPLEMENT();
}
/// interpolate stress on given positions for each element (empty
/// implemantation to avoid the generic call to be done on cohesive elements)
virtual void interpolateStress(__attribute__((unused)) const ElementType type,
__attribute__((unused)) Array<Real> & result) { };
/// compute the stresses
virtual void computeAllStresses(__attribute__((unused)) GhostType ghost_type = _not_ghost) { };
// add the facet to be handled by the material
UInt addFacet(const Element & element);
protected:
virtual void computeTangentTraction(__attribute__((unused)) const ElementType & el_type,
__attribute__((unused)) Array<Real> & tangent_matrix,
__attribute__((unused)) const Array<Real> & normal,
__attribute__((unused)) GhostType ghost_type = _not_ghost) {
AKANTU_DEBUG_TO_IMPLEMENT();
}
/// compute the normal
void computeNormal(const Array<Real> & position,
Array<Real> & normal,
ElementType type,
GhostType ghost_type);
/// compute the opening
void computeOpening(const Array<Real> & displacement,
Array<Real> & normal,
ElementType type,
GhostType ghost_type);
template<ElementType type>
void computeNormal(const Array<Real> & position,
Array<Real> & normal,
GhostType ghost_type);
/// assemble stiffness
void assembleStiffnessMatrix(GhostType ghost_type);
/// constitutive law
virtual void computeTraction(const Array<Real> & normal,
ElementType el_type,
GhostType ghost_type = _not_ghost) = 0;
/// parallelism functions
inline UInt getNbDataForElements(const Array<Element> & elements,
SynchronizationTag tag) const;
inline void packElementData(CommunicationBuffer & buffer,
const Array<Element> & elements,
SynchronizationTag tag) const;
inline void unpackElementData(CommunicationBuffer & buffer,
const Array<Element> & elements,
SynchronizationTag tag);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/// get the opening
AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Opening, opening, Real);
/// get the traction
AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Traction, tractions, Real);
/// get damage
AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(Damage, damage, Real);
/// get facet filter
AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(FacetFilter, facet_filter, UInt);
AKANTU_GET_MACRO_BY_ELEMENT_TYPE(FacetFilter, facet_filter, UInt);
AKANTU_GET_MACRO(FacetFilter, facet_filter, const ElementTypeMapArray<UInt> &);
// AKANTU_GET_MACRO(ElementFilter, element_filter, const ElementTypeMapArray<UInt> &);
/// compute reversible energy
Real getReversibleEnergy();
/// compute dissipated energy
Real getDissipatedEnergy();
/// compute contact energy
Real getContactEnergy();
/// get energy
virtual Real getEnergy(std::string type);
/// return the energy (identified by id) for the provided element
virtual Real getEnergy(std::string energy_id, ElementType type, UInt index) {
return Material::getEnergy(energy_id, type, index);
}
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// list of facets assigned to this material
ElementTypeMapArray<UInt> facet_filter;
/// Link to the cohesive fem object in the model
MyFEEngineCohesiveType * fem_cohesive;
private:
/// reversible energy by quadrature point
CohesiveInternalField<Real> reversible_energy;
/// total energy by quadrature point
CohesiveInternalField<Real> total_energy;
protected:
/// opening in all elements and quadrature points
CohesiveInternalField<Real> opening;
/// opening in all elements and quadrature points (previous time step)
CohesiveInternalField<Real> opening_old;
/// traction in all elements and quadrature points
CohesiveInternalField<Real> tractions;
/// traction in all elements and quadrature points (previous time step)
CohesiveInternalField<Real> tractions_old;
/// traction due to contact
CohesiveInternalField<Real> contact_tractions;
/// normal openings for contact tractions
CohesiveInternalField<Real> contact_opening;
/// maximum displacement
CohesiveInternalField<Real> delta_max;
/// tell if the previous delta_max state is needed (in iterative schemes)
bool use_previous_delta_max;
/// tell if the previous opening state is needed (in iterative schemes)
bool use_previous_opening;
/// damage
CohesiveInternalField<Real> damage;
/// pointer to the solid mechanics model for cohesive elements
SolidMechanicsModelCohesive * model;
/// critical stress
RandomInternalField<Real, FacetInternalField> sigma_c;
/// critical displacement
Real delta_c;
/// array to temporarily store the normals
Array<Real> normal;
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
#include "material_cohesive_inline_impl.cc"
__END_AKANTU__
#include "cohesive_internal_field_tmpl.hh"
#endif /* __AKANTU_MATERIAL_COHESIVE_HH__ */
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