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rAKA/src/model/multiscale_tools/materials/material_FE2/material_FE2.hh
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material_FE2.hh
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/**
* @file material_FE2.hh
* @author Emil Gallyamov <emil.gallyamov@epfl.ch>
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @date Tue Feb 8 2022
* @brief Material for multi-scale simulations. It stores an
* underlying RVE on each integration point of the material.
*
* @section LICENSE
*
* Copyright (©) 2010-2011 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 "material.hh"
#include "material_thermal.hh"
/* -------------------------------------------------------------------------- */
#ifndef AKANTU_MATERIAL_FE_2_HH_
#define AKANTU_MATERIAL_FE_2_HH_
namespace akantu {
class SolidMechanicsModelRVE;
}
namespace akantu {
/* ------------------------------------------------------------------ */
/// /!\ This material works ONLY for meshes with a single element type!!!
/* ------------------------------------------------------------------ */
/**
* MaterialFE2
*
* parameters in the material files :
* - mesh_file
*/
template <UInt DIM> class MaterialFE2 : public MaterialThermal<DIM> {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
private:
typedef MaterialThermal<DIM> Parent;
public:
MaterialFE2(SolidMechanicsModel & model, const ID & id = "");
virtual ~MaterialFE2();
typedef VoigtHelper<DIM> voigt_h;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
virtual void initMaterial();
/// constitutive law for all element of a type
virtual void computeStress(ElementType el_type,
GhostType ghost_type = _not_ghost);
/// compute the tangent stiffness matrix for an element type
void computeTangentModuli(ElementType el_type, Array<Real> & tangent_matrix,
GhostType ghost_type = _not_ghost);
/// compute amount of gel strain averaged across all RVEs
Real computeAverageExpansion();
/// set default dumper directory to all rves
void setDirectoryToRveDumper(const std::string & directory);
/// compute number of RVEs
UInt getNbRVEs();
/// dump all the rves
void dump();
/// dump all the rves with the dumping number
void dump(UInt dump_nb);
/// increase gel strain according to time step
void increaseExpansion(Real & dt);
/// increase gel strain according to time step by Arrhenius law
void increaseExpansionArrhenius(Real & dt, const Real & k,
const Real & Eactivation);
/// set time step to all RVEs
void setTimeStep(Real dt);
/// update stiffness and crack ratios in fe2 material
void updateStiffness();
/// save state of all rves
void saveRVEsState(std::string & output_dir);
/// load state of all rves
void loadRVEsState(std::string & output_dir);
private:
void initialize();
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
/// Underlying RVE at each integration point
std::vector<std::unique_ptr<SolidMechanicsModelRVE>> RVEs;
/// Meshes for all RVEs
std::vector<std::unique_ptr<Mesh>> meshes;
/// the element type of the associated mesh (this material handles only one
/// type!!)
ElementType el_type;
/// the name of RVE mesh file
ID mesh_file;
/// Elastic stiffness tensor at each Gauss point (in voigt notation)
InternalField<Real> C;
/// number of gel pockets in each underlying RVE
UInt nb_expanding_elements;
/// parameters of sigmoidal expansion law (Larive, 1998)
Real eps_inf, U_C, U_L, T_ref, time_lat_ref, time_ch_ref;
/// current expansion due to ASR at each Gauss point
InternalField<Real> expansion;
/// ratio between area of damaged elements weighted by damage value
/// and the materials' areas
InternalField<Real> crack_volume_ratio;
InternalField<Real> crack_volume_ratio_paste;
InternalField<Real> crack_volume_ratio_agg;
/// flag to reset damage to previously converged values on each iteration
bool reset_damage{false};
};
/* -------------------------------------------------------------------------- */
/* inline functions */
/* -------------------------------------------------------------------------- */
} // namespace akantu
#endif /* AKANTU_MATERIAL_FE_2_HH_ */
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