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local_material_damage.cc
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Sun, Jul 21, 13:02

local_material_damage.cc
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/**
* Copyright (©) 2010-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* 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"
namespace akantu {
/* -------------------------------------------------------------------------- */
LocalMaterialDamage::LocalMaterialDamage(SolidMechanicsModel & model,
const ID & id)
: Material(model, id), damage(this->registerInternal("damage", 1)) {
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);
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();
auto dim = this->spatial_dimension;
for (auto && [grad_u, sigma, dam] :
zip(make_view(this->gradu(el_type, ghost_type), dim, dim),
make_view(this->stress(el_type, ghost_type), dim, dim),
damage(el_type, ghost_type))) {
computeStressOnQuad(grad_u, sigma, dam);
++dam;
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void LocalMaterialDamage::computePotentialEnergy(ElementType el_type) {
AKANTU_DEBUG_IN();
auto dim = this->spatial_dimension;
Material::computePotentialEnergy(el_type);
for (auto && [grad_u, sigma, epot] :
zip(make_view(this->getGradU(el_type), dim, dim),
make_view(this->getStress(el_type), dim, dim),
this->potential_energy(el_type))) {
computePotentialEnergyOnQuad(grad_u, sigma, epot);
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
} // namespace akantu

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