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local_material_damage.cc
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local_material_damage.cc
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/**
* @file local_material_damage.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Marion Estelle Chambart <marion.chambart@epfl.ch>
*
* @date creation: Fri Nov 26 2010
* @date last modification: Tue Jun 24 2014
*
* @brief Specialization of the material class for the damage material
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 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", *this) {
AKANTU_DEBUG_IN();
this->registerParam("E" , E , 0. , _pat_parsable, "Young's modulus" );
this->registerParam("nu" , nu , 0.5 , _pat_parsable, "Poisson's ratio" );
this->registerParam("lambda" , lambda , _pat_readable, "First Lamé coefficient" );
this->registerParam("mu" , mu , _pat_readable, "Second Lamé coefficient");
this->registerParam("kapa" , kpa , _pat_readable, "Bulk coefficient" );
this->registerParam("Yd" , Yd , 50., _pat_parsmod);
this->registerParam("Sd" , Sd , 5000., _pat_parsmod);
damage.initialize(1);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void LocalMaterialDamage::initMaterial() {
AKANTU_DEBUG_IN();
Material::initMaterial();
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();
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();
Material::computePotentialEnergy(el_type, ghost_type);
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();
}
/* -------------------------------------------------------------------------- */
__END_AKANTU__

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