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material_marigo.cc
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material_marigo.cc
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/**
* @file material_marigo.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Marion Estelle Chambart <marion.chambart@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date Thu Feb 02 11:09:36 2012
*
* @brief Specialization of the material class for the marigo 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_marigo.hh"
#include "solid_mechanics_model.hh"
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
template<UInt spatial_dimension>
MaterialMarigo<spatial_dimension>::MaterialMarigo(SolidMechanicsModel & model,
const ID & id) :
Material(model, id),
MaterialDamage<spatial_dimension>(model, id),
Yd("Yd", *this), damage_in_y(false), yc_limit(false) {
AKANTU_DEBUG_IN();
this->registerParam("Sd", Sd, 5000., ParamAccessType(_pat_parsable | _pat_modifiable));
this->registerParam("epsilon_c", epsilon_c, 0., _pat_parsable, "Critical strain");
this->registerParam("Yc limit", yc_limit, false, _pat_internal, "As the material a critical Y");
this->registerParam("damage_in_y", damage_in_y, false, _pat_parsable, "Use threshold (1-D)Y");
this->registerParam("Yd", Yd, _pat_parsable, "Damaging energy threshold");
this->Yd.initialize(1);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
template<UInt spatial_dimension>
void MaterialMarigo<spatial_dimension>::initMaterial() {
AKANTU_DEBUG_IN();
MaterialDamage<spatial_dimension>::initMaterial();
updateInternalParameters();
this->Yd.resize();
// const Mesh & mesh = this->model->getFEM().getMesh();
// Mesh::type_iterator it = mesh.firstType(spatial_dimension);
// Mesh::type_iterator last_type = mesh.lastType(spatial_dimension);
// for(; it != last_type; ++it) {
// UInt nb_element = this->element_filter(*it).getSize();
// UInt nb_quad = this->model->getFEM().getNbQuadraturePoints(*it);
// Array <Real> & Yd_rand_vec = Yd_rand(*it);
// for(UInt e = 0; e < nb_element; ++e) {
// Real rand_part = (2 * drand48()-1) * Yd_randomness * Yd;
// for(UInt q = 0; q < nb_quad; ++q)
// Yd_rand_vec(nb_quad*e+q,0) = Yd + rand_part;
// }
// }
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
template<UInt spatial_dimension>
void MaterialMarigo<spatial_dimension>::updateInternalParameters() {
MaterialDamage<spatial_dimension>::updateInternalParameters();
Yc = .5 * epsilon_c * this->E * epsilon_c;
if(std::abs(epsilon_c) > std::numeric_limits<Real>::epsilon()) yc_limit = true;
else yc_limit = false;
}
/* -------------------------------------------------------------------------- */
template<UInt spatial_dimension>
void MaterialMarigo<spatial_dimension>::computeStress(ElementType el_type,
GhostType ghost_type) {
AKANTU_DEBUG_IN();
Real * dam = this->damage(el_type, ghost_type).storage();
Real * Yd_q = Yd(el_type, ghost_type).storage();
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_BEGIN(el_type, ghost_type);
Real Y = 0;
computeStressOnQuad(grad_u, sigma, *dam, Y, *Yd_q);
++dam;
++Yd_q;
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_END;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
INSTANSIATE_MATERIAL(MaterialMarigo);
__END_AKANTU__

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