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local_material_damage.cc
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Sun, May 12, 09:34

local_material_damage.cc
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/**
* @file local_material_damage.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 "local_material_damage.hh"
#include "solid_mechanics_model.hh"
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
LocalMaterialDamage::LocalMaterialDamage(SolidMechanicsModel & model,
const ID & id) :
Material(model, id),
damage("damage", id) {
AKANTU_DEBUG_IN();
E = 0;
nu = 1./2.;
Yd = 50;
Sd = 5000;
initInternalVector(this->damage, 1);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void LocalMaterialDamage::initMaterial() {
AKANTU_DEBUG_IN();
Material::initMaterial();
resizeInternalVector(this->damage);
lambda = nu * E / ((1 + nu) * (1 - 2*nu));
mu = E / (2 * (1 + nu));
kpa = lambda + 2./3. * mu;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void LocalMaterialDamage::computeStress(ElementType el_type, GhostType ghost_type) {
AKANTU_DEBUG_IN();
resizeInternalVector(this->damage);
Real * dam = damage(el_type, ghost_type).storage();
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_BEGIN(el_type, ghost_type);
computeStressOnQuad(grad_u, sigma, *dam);
++dam;
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_END;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void LocalMaterialDamage::computePotentialEnergy(ElementType el_type, GhostType ghost_type) {
AKANTU_DEBUG_IN();
if(ghost_type != _not_ghost) return;
Real * epot = potential_energy(el_type).storage();
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_BEGIN(el_type, ghost_type);
computePotentialEnergyOnQuad(grad_u, sigma, *epot);
epot++;
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_END;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
bool LocalMaterialDamage::setParam(const std::string & key, const std::string & value,
const ID & id) {
std::stringstream sstr(value);
if(key == "E") { sstr >> E; }
else if(key == "nu") { sstr >> nu; }
else if(key == "Yd") { sstr >> Yd; }
else if(key == "Sd") { sstr >> Sd; }
else { return Material::setParam(key, value, id); }
return true;
}
/* -------------------------------------------------------------------------- */
void LocalMaterialDamage::printself(std::ostream & stream, int indent) const {
std::string space;
for(Int i = 0; i < indent; i++, space += AKANTU_INDENT);
stream << space << "Material<_damage> [" << std::endl;
stream << space << " + id : " << id << std::endl;
stream << space << " + name : " << name << std::endl;
stream << space << " + density : " << rho << std::endl;
stream << space << " + Young's modulus : " << E << std::endl;
stream << space << " + Poisson's ratio : " << nu << std::endl;
stream << space << " + Yd : " << Yd << std::endl;
stream << space << " + Sd : " << Sd << std::endl;
if(this->isInit()) {
stream << space << " + First Lamé coefficient : " << lambda << std::endl;
stream << space << " + Second Lamé coefficient : " << mu << std::endl;
stream << space << " + Bulk coefficient : " << kpa << std::endl;
}
stream << space << "]" << std::endl;
}
/* -------------------------------------------------------------------------- */
__END_AKANTU__

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