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rAKA/src/model/phase_field/phasefields/phasefield_exponential.cc
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phasefield_exponential.cc
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/**
* @file phasefield_exponential.cc
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Fri Jun 19 2020
* @date last modification: Wed Jun 23 2021
*
* @brief Specialization of the phasefield law class for exponential type
* law
*
*
* @section LICENSE
*
* Copyright (©) 2018-2021 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 "phasefield_exponential.hh"
#include "aka_common.hh"
#include <tuple>
namespace akantu {
/* -------------------------------------------------------------------------- */
PhaseFieldExponential::PhaseFieldExponential(PhaseFieldModel & model,
const ID & id)
: PhaseField(model, id) {}
/* -------------------------------------------------------------------------- */
void PhaseFieldExponential::updateInternalParameters() {
PhaseField::updateInternalParameters();
for (const auto & type :
element_filter.elementTypes(spatial_dimension, _not_ghost)) {
for (auto && tuple : zip(make_view(this->damage_energy(type, _not_ghost),
spatial_dimension, spatial_dimension),
this->g_c(type, _not_ghost))) {
Matrix<Real> d(spatial_dimension, spatial_dimension);
// eye g_c * l0
d.eye(std::get<1>(tuple) * this->l0);
std::get<0>(tuple) = d;
}
}
}
/* -------------------------------------------------------------------------- */
void PhaseFieldExponential::computeDrivingForce(const ElementType & el_type,
GhostType ghost_type) {
for (auto && tuple :
zip(this->phi(el_type, ghost_type),
this->phi.previous(el_type, ghost_type),
this->driving_force(el_type, ghost_type),
this->damage_energy_density(el_type, ghost_type),
make_view(this->strain(el_type, ghost_type), spatial_dimension,
spatial_dimension),
this->damage_on_qpoints(el_type, _not_ghost),
make_view(this->driving_energy(el_type, ghost_type),
spatial_dimension),
make_view(this->damage_energy(el_type, ghost_type),
spatial_dimension, spatial_dimension),
make_view(this->gradd(el_type, ghost_type), spatial_dimension),
this->g_c(el_type, ghost_type))) {
auto & phi_quad = std::get<0>(tuple);
auto & phi_hist_quad = std::get<1>(tuple);
auto & driving_force_quad = std::get<2>(tuple);
auto & dam_energy_density_quad = std::get<3>(tuple);
auto & strain = std::get<4>(tuple);
auto & dam_on_quad = std::get<5>(tuple);
auto & driving_energy_quad = std::get<6>(tuple);
auto & damage_energy_quad = std::get<7>(tuple);
auto & gradd_quad = std::get<8>(tuple);
auto & g_c_quad = std::get<9>(tuple);
computePhiOnQuad(strain, phi_quad, phi_hist_quad);
computeDamageEnergyDensityOnQuad(phi_quad, dam_energy_density_quad,
g_c_quad);
driving_force_quad = dam_on_quad * dam_energy_density_quad - 2 * phi_quad;
driving_energy_quad = damage_energy_quad * gradd_quad;
}
}
/* -------------------------------------------------------------------------- */
void PhaseFieldExponential::computeDissipatedEnergy(ElementType el_type) {
AKANTU_DEBUG_IN();
for (auto && tuple :
zip(this->dissipated_energy(el_type, _not_ghost),
this->damage_on_qpoints(el_type, _not_ghost),
make_view(this->gradd(el_type, _not_ghost), spatial_dimension),
this->g_c(el_type, _not_ghost))) {
this->computeDissipatedEnergyOnQuad(std::get<1>(tuple), std::get<2>(tuple),
std::get<0>(tuple), std::get<3>(tuple));
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void PhaseFieldExponential::computeDissipatedEnergyByElement(
ElementType type, UInt index, Vector<Real> & edis_on_quad_points) {
auto gradd_it = this->gradd(type).begin(spatial_dimension);
auto gradd_end = this->gradd(type).begin(spatial_dimension);
auto damage_it = this->damage_on_qpoints(type).begin();
auto g_c_it = this->g_c(type).begin();
UInt nb_quadrature_points = fem.getNbIntegrationPoints(type);
gradd_it += index * nb_quadrature_points;
gradd_end += (index + 1) * nb_quadrature_points;
damage_it += index * nb_quadrature_points;
g_c_it += index * nb_quadrature_points;
Real * edis_quad = edis_on_quad_points.storage();
for (; gradd_it != gradd_end; ++gradd_it, ++damage_it, ++edis_quad) {
this->computeDissipatedEnergyOnQuad(*damage_it, *gradd_it, *edis_quad,
*g_c_it);
}
}
INSTANTIATE_PHASEFIELD(exponential, PhaseFieldExponential);
} // namespace akantu
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