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material_damage_linear.cc
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material_damage_linear.cc
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/**
* @file material_damage_linear.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 damage 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_damage_linear.hh"
#include "solid_mechanics_model.hh"
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
MaterialDamageLinear::MaterialDamageLinear(Model & model, const ID & id) :
Material(model, id), MaterialElastic(model, id), MaterialDamage(model, id) {
AKANTU_DEBUG_IN();
Sigc = 1e5;
Gc = 2;
is_non_local = false;
initInternalVector(this->K, 1);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void MaterialDamageLinear::initMaterial() {
AKANTU_DEBUG_IN();
MaterialDamage::initMaterial();
resizeInternalVector(this->K);
Epsmin = Sigc / E;
Epsmax = 2 * Gc/ Sigc + Epsmin;
const Mesh&mesh=model->getFEM().getMesh() ;
Mesh::type_iterator it = mesh.firstType(spatial_dimension);
Mesh::type_iterator end = mesh.lastType(spatial_dimension);
for(; it != end; ++it) {
UInt nb_element = mesh.getNbElement(*it);
UInt nb_quad = model->getFEM().getNbQuadraturePoints(*it);
Vector <Real> & K_vec = K(*it);
std::fill_n(K_vec.storage(),nb_element*nb_quad,Epsmin);
}
is_init = true;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void MaterialDamageLinear::computeStress(ElementType el_type, GhostType ghost_type) {
AKANTU_DEBUG_IN();
Real F[3*3];
Real sigma[3*3];
Real * dam = damage(el_type, ghost_type).storage();
Real * K = damage(el_type, ghost_type).storage();
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_BEGIN;
memset(F, 0, 3 * 3 * sizeof(Real));
for (UInt i = 0; i < spatial_dimension; ++i)
for (UInt j = 0; j < spatial_dimension; ++j)
F[3*i + j] = strain_val[spatial_dimension * i + j];
computeStress(F, sigma,*dam,*K);
++dam;
for (UInt i = 0; i < spatial_dimension; ++i)
for (UInt j = 0; j < spatial_dimension; ++j)
stress_val[spatial_dimension*i + j] = sigma[3 * i + j];
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_END;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
bool MaterialDamageLinear::setParam(const std::string & key, const std::string & value,
const ID & id) {
std::stringstream sstr(value);
if(key == "Sigc") { sstr >> Sigc; }
else if(key == "Gc") { sstr >> Gc; }
else { return MaterialDamage::setParam(key, value, id); }
return true;
}
/* -------------------------------------------------------------------------- */
void MaterialDamageLinear::printself(std::ostream & stream, int indent) const {
std::string space;
for(Int i = 0; i < indent; i++, space += AKANTU_INDENT);
stream << space << "Material<_damage_linear> [" << std::endl;
stream << space << " + SigmaC : " << Sigc << std::endl;
stream << space << " + GC : " << Gc << std::endl;
MaterialDamage::printself(stream, indent + 1);
stream << space << "]" << std::endl;
}
/* -------------------------------------------------------------------------- */
__END_AKANTU__

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