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rAKA/extra_packages/extra-materials/src/material_plastic/material_viscoplastic.cc
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material_viscoplastic.cc
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/**
* Copyright (©) 2018-2023 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 "material_viscoplastic.hh"
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
/* -------------------------------------------------------------------------- */
template <Int dim>
MaterialViscoPlastic<dim>::MaterialViscoPlastic(SolidMechanicsModel & model,
const ID & id)
: MaterialPlastic<dim>(model, id) {
AKANTU_DEBUG_IN();
this->registerParam("rate", rate, 0., _pat_parsable | _pat_modifiable,
"Rate sensitivity component");
this->registerParam("edot0", edot0, 0., _pat_parsable | _pat_modifiable,
"Reference strain rate");
this->registerParam("ts", ts, 0., _pat_parsable | _pat_modifiable,
"Time Step");
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
template <Int dim>
void MaterialViscoPlastic<dim>::computeStress(ElementType el_type,
GhostType ghost_type) {
AKANTU_DEBUG_IN();
Real * iso_hardening = this->iso_hardening(el_type, ghost_type).data();
auto previous_grad_u_it =
this->gradu.previous(el_type, ghost_type).begin(dim, dim);
auto previous_sigma_it =
this->stress.previous(el_type, ghost_type).begin(dim, dim);
auto inelastic_strain_it =
this->inelastic_strain(el_type, ghost_type).begin(dim, dim);
auto previous_inelastic_strain_it =
this->inelastic_strain.previous(el_type, ghost_type).begin(dim, dim);
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_BEGIN(el_type, ghost_type);
computeStressOnQuad(grad_u, *previous_grad_u_it, sigma, *previous_sigma_it,
*inelastic_strain_it, *previous_inelastic_strain_it,
*iso_hardening);
++inelastic_strain_it;
++iso_hardening;
++previous_grad_u_it;
MATERIAL_STRESS_QUADRATURE_POINT_LOOP_END;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
template <Int dim>
void MaterialViscoPlastic<dim>::computeTangentModuli(
__attribute__((unused)) ElementType el_type, Array<Real> & tangent_matrix,
__attribute__((unused)) GhostType ghost_type) {
AKANTU_DEBUG_IN();
auto previous_sigma_it =
this->stress.previous(el_type, ghost_type).begin(dim, dim);
auto previous_strain_it =
this->gradu.previous(el_type, ghost_type).begin(dim, dim);
Real * iso_hardening = this->iso_hardening(el_type, ghost_type).data();
MATERIAL_TANGENT_QUADRATURE_POINT_LOOP_BEGIN(tangent_matrix);
Matrix<Real> & previous_grad_u = *previous_strain_it;
Matrix<Real> & previous_sigma_tensor = *previous_sigma_it;
computeTangentModuliOnQuad(tangent, grad_u, previous_grad_u, sigma,
previous_sigma_tensor, *iso_hardening);
++previous_sigma_it;
++previous_strain_it;
++iso_hardening;
MATERIAL_TANGENT_QUADRATURE_POINT_LOOP_END;
AKANTU_DEBUG_OUT();
}
INSTANTIATE_MATERIAL(visco_plastic, MaterialViscoPlastic);
} // namespace akantu
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