Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F90038540
residual.cpp
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Mon, Oct 28, 17:51
Size
6 KB
Mime Type
text/x-c++
Expires
Wed, Oct 30, 17:51 (1 d, 23 h)
Engine
blob
Format
Raw Data
Handle
21997667
Attached To
rTAMAAS tamaas
residual.cpp
View Options
/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2023 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
* Copyright (©) 2020-2023 Lucas Frérot
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "residual.hh"
#include "grid_view.hh"
#include "model_factory.hh"
#include "model_type.hh"
#include <list>
#include <memory>
/* -------------------------------------------------------------------------- */
namespace tamaas {
/* -------------------------------------------------------------------------- */
template <model_type type>
ResidualTemplate<type>::ResidualTemplate(Model* model, Real sigma_0, Real h)
: Residual(model), hardening(model, sigma_0, h) {
// Registering operators for residual and displacement calculation
ModelFactory::registerVolumeOperators(*model);
const auto n = model->getDiscretization();
const auto nc = trait::voigt;
strain = model->request<type, false, Real>("strain", n, nc);
stress = model->request<type, false, Real>("stress", n, nc);
residual = model->request<type, false, Real>("residual", n, nc);
tmp = allocateGrid<type, false, Real>(n, nc);
plastic_filter = [this](UInt layer) {
#if 0
return true;
#else
return this->plastic_layers.find(layer) != this->plastic_layers.end();
#endif
};
}
/* -------------------------------------------------------------------------- */
template <model_type type>
void ResidualTemplate<type>::computeResidual(GridBase<Real>& strain_increment) {
Grid<Real, dim> inc(strain->sizes(), strain->getNbComponents(),
strain_increment.view());
hardening.computeEigenStress(*residual, *strain, inc);
this->updateFilter(*residual);
integralOperator("mindlin_gradient")
.applyIf(*residual, *residual, plastic_filter);
integralOperator("boussinesq_gradient")
.apply(this->model->getTraction(), *tmp);
*residual -= strain_increment;
*residual += *tmp;
}
/* -------------------------------------------------------------------------- */
template <model_type type>
void ResidualTemplate<type>::applyTangent(
GridBase<Real>& output, GridBase<Real>& input,
GridBase<Real>& current_strain_increment) {
auto& inc = dynamic_cast<Grid<Real, dim>&>(current_strain_increment);
auto& out = dynamic_cast<Grid<Real, dim>&>(output);
auto& in = dynamic_cast<Grid<Real, dim>&>(input);
hardening.applyTangentIncrement(out, in, *strain, inc);
this->updateFilter(out);
integralOperator("mindlin_gradient").applyIf(out, out, plastic_filter);
out -= in;
}
/* -------------------------------------------------------------------------- */
template <model_type type>
void ResidualTemplate<type>::computeStress(GridBase<Real>& strain_increment) {
auto& inc = dynamic_cast<Grid<Real, dim>&>(strain_increment);
hardening.computeStress(*stress, *strain, inc);
// integralOperator("boussinesq_gradient")
// .apply(this->model->getTraction(), tmp);
// this->model->applyElasticity(tmp, tmp);
// stress += tmp;
}
/* -------------------------------------------------------------------------- */
template <model_type type>
void ResidualTemplate<type>::updateState(
GridBase<Real>& converged_strain_increment) {
auto& inc = dynamic_cast<Grid<Real, dim>&>(converged_strain_increment);
hardening.computeStress(*stress, *strain, inc);
hardening.update();
this->model->applyElasticity(*residual, hardening.getPlasticStrain());
updateFilter(*residual);
*strain += converged_strain_increment;
// Computing displacements
integralOperator("mindlin").applyIf(*residual, this->model->getDisplacement(),
plastic_filter);
Grid<Real, dim> disp_tmp(this->model->getDiscretization(), trait::components);
integralOperator("boussinesq").apply(this->model->getTraction(), disp_tmp);
this->model->getDisplacement() += disp_tmp;
}
/* -------------------------------------------------------------------------- */
template <model_type type>
void ResidualTemplate<type>::computeResidualDisplacement(
GridBase<Real>& strain_increment) {
auto& inc = dynamic_cast<Grid<Real, dim>&>(strain_increment);
hardening.computeInelasticDeformationIncrement(*tmp, *strain, inc);
updateFilter(*tmp);
this->model->applyElasticity(*residual, *tmp);
integralOperator("mindlin").applyIf(*residual, this->model->getDisplacement(),
plastic_filter);
}
/* -------------------------------------------------------------------------- */
template <model_type type>
void ResidualTemplate<type>::updateFilter(
Grid<Real, dim>& plastic_strain_increment) {
// plastic_layers.clear();
for (UInt i : Loop::range(plastic_strain_increment.sizes().front())) {
auto slice = make_view(plastic_strain_increment, i);
if (slice.dot(slice) / slice.globalDataSize() > 1e-14)
plastic_layers.insert(i);
}
}
/* -------------------------------------------------------------------------- */
template <model_type type>
void ResidualTemplate<type>::setIntegrationMethod(integration_method method,
Real cutoff) {
auto& mindlin = dynamic_cast<Mindlin<type, 1>&>(
*this->model->getIntegralOperator("mindlin"));
auto& mindlin_g = dynamic_cast<Mindlin<type, 2>&>(
*this->model->getIntegralOperator("mindlin_gradient"));
mindlin.setIntegrationMethod(method, cutoff);
mindlin_g.setIntegrationMethod(method, cutoff);
}
/* -------------------------------------------------------------------------- */
template class ResidualTemplate<model_type::volume_2d>;
/* -------------------------------------------------------------------------- */
} // namespace tamaas
Event Timeline
Log In to Comment