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material_marigo.cc
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/**
* @file material_marigo.cc
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Marion Chambart <marion.chambart@epfl.ch>
* @date Tue Jul 27 11:53:52 2010
*
* @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),
MaterialElastic<spatial_dimension>(model, id),
MaterialDamage<spatial_dimension>(model, id),
Yd_rand("Yd_rand",id) {
AKANTU_DEBUG_IN();
Yd = 50;
Sd = 5000;
Yd_randomness = 0;
epsilon_c = std::numeric_limits<Real>::max();
this->initInternalVector(this->Yd_rand, 1);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
template<UInt spatial_dimension>
void MaterialMarigo<spatial_dimension>::initMaterial() {
AKANTU_DEBUG_IN();
MaterialDamage<spatial_dimension>::initMaterial();
if (std::abs(epsilon_c - std::numeric_limits<Real>::max()) < std::numeric_limits<Real>::epsilon())
Yc = std::numeric_limits<Real>::max();
else {
Yc = .5 * epsilon_c * this->E * epsilon_c;
}
this->resizeInternalVector(this->Yd_rand);
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);
Vector <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>::computeStress(ElementType el_type,
GhostType ghost_type) {
AKANTU_DEBUG_IN();
Real * dam = this->damage(el_type, ghost_type).storage();
Real * Ydq = Yd_rand(el_type, ghost_type).storage();
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_BEGIN;
Real Y = 0;
computeStressOnQuad(grad_u, sigma, *dam, Y, *Ydq);
++dam;
++Ydq;
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_END;
if(!this->is_non_local) this->updateDissipatedEnergy(ghost_type);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
template<UInt spatial_dimension>
bool MaterialMarigo<spatial_dimension>::setParam(const std::string & key,
const std::string & value,
const ID & id) {
std::stringstream sstr(value);
if(key == "Yd") { sstr >> Yd; }
else if(key == "Sd") { sstr >> Sd; }
else if(key == "Yd_randomness") { sstr >> Yd_randomness; }
else if(key == "epsilon_c") { sstr >> epsilon_c; }
else { return MaterialDamage<spatial_dimension>::setParam(key, value, id); }
return true;
}
/* -------------------------------------------------------------------------- */
template<UInt spatial_dimension>
void MaterialMarigo<spatial_dimension>::printself(std::ostream & stream,
int indent) const {
std::string space;
for(Int i = 0; i < indent; i++, space += AKANTU_INDENT);
stream << space << "Material<_marigo> [" << std::endl;
stream << space << " + Yd : " << Yd << std::endl;
stream << space << " + Sd : " << Sd << std::endl;
stream << space << " + randomness : " << Yd_randomness << std::endl;
if (std::abs(epsilon_c - std::numeric_limits<Real>::max()) > std::numeric_limits<Real>::epsilon()) {
stream << space << " + epsilon_c : " << epsilon_c << std::endl;
stream << space << " + Yc : " << Yc << std::endl;
}
MaterialDamage<spatial_dimension>::printself(stream, indent + 1);
stream << space << "]" << std::endl;
}
/* -------------------------------------------------------------------------- */
INSTANSIATE_MATERIAL(MaterialMarigo);
__END_AKANTU__

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