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patch_test_linear_elastic_implicit.cc
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Wed, Mar 12, 05:52

patch_test_linear_elastic_implicit.cc
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/**
* Copyright (©) 2013-2023 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 "patch_test_linear_solid_mechanics_fixture.hh"
/* -------------------------------------------------------------------------- */
#include "non_linear_solver.hh"
/* -------------------------------------------------------------------------- */
using namespace akantu;
TYPED_TEST(TestPatchTestSMMLinear, Implicit) {
std::string filename = "material_check_stress_plane_stress.dat";
if (this->plane_strain)
filename = "material_check_stress_plane_strain.dat";
this->initModel(_implicit_dynamic, filename);
const auto & coordinates = this->mesh->getNodes();
auto & displacement = this->model->getDisplacement();
// set the position of all nodes to the static solution
for (auto && tuple : zip(make_view(coordinates, this->dim),
make_view(displacement, this->dim))) {
this->setLinearDOF(std::get<1>(tuple), std::get<0>(tuple));
}
for (Int s = 0; s < 100; ++s) {
this->model->solveStep();
}
auto ekin = this->model->getEnergy("kinetic");
EXPECT_NEAR(0, ekin, 1e-16);
this->checkAll();
#define debug 0
#if debug
this->model->setBaseName(std::to_string(this->type) + "_implicit");
this->model->addDumpField("stress");
this->model->addDumpField("grad_u");
this->model->addDumpFieldVector("internal_force");
this->model->addDumpFieldVector("external_force");
this->model->addDumpField("blocked_dofs");
this->model->addDumpFieldVector("displacement");
this->model->dump();
#endif
}
/* -------------------------------------------------------------------------- */
TYPED_TEST(TestPatchTestSMMLinear, Static) {
std::string filename = "material_check_stress_plane_stress.dat";
if (this->plane_strain)
filename = "material_check_stress_plane_strain.dat";
this->initModel(_static, filename);
auto & solver = this->model->getNonLinearSolver();
solver.set("max_iterations", 2);
solver.set("threshold", 2e-4);
solver.set("convergence_type", SolveConvergenceCriteria::_residual);
this->model->solveStep();
this->checkAll();
#define debug 0
#if debug
this->model->setBaseName(std::to_string(this->type) + "_static");
this->model->addDumpField("stress");
this->model->addDumpField("grad_u");
this->model->addDumpFieldVector("internal_force");
this->model->addDumpFieldVector("external_force");
this->model->addDumpField("blocked_dofs");
this->model->addDumpFieldVector("displacement");
this->model->dump();
#endif
}
/* -------------------------------------------------------------------------- */
TYPED_TEST(TestPatchTestSMMLinear, ImplicitFiniteDeformation) {
std::string filename =
"material_check_stress_plane_stress_finite_deformation.dat";
if (this->plane_strain)
filename = "material_check_stress_plane_strain_finite_deformation.dat";
else {
SUCCEED();
return;
}
this->initModel(_implicit_dynamic, filename);
const auto & coordinates = this->mesh->getNodes();
auto & displacement = this->model->getDisplacement();
// set the position of all nodes to the static solution
for (auto && tuple : zip(make_view(coordinates, this->dim),
make_view(displacement, this->dim))) {
this->setLinearDOF(std::get<1>(tuple), std::get<0>(tuple));
}
for (Int s = 0; s < 100; ++s) {
this->model->solveStep();
}
auto ekin = this->model->getEnergy("kinetic");
EXPECT_NEAR(0, ekin, 1e-16);
this->checkAll();
#define debug 0
#if debug
this->model->setBaseName(std::to_string(this->type) + "_implicit_finit_def");
this->model->addDumpField("stress");
this->model->addDumpField("grad_u");
this->model->addDumpFieldVector("internal_force");
this->model->addDumpFieldVector("external_force");
this->model->addDumpField("blocked_dofs");
this->model->addDumpFieldVector("displacement");
this->model->dump();
#endif
}
/* -------------------------------------------------------------------------- */
TYPED_TEST(TestPatchTestSMMLinear, StaticFiniteDeformation) {
std::string filename =
"material_check_stress_plane_stress_finite_deformation.dat";
if (this->plane_strain) {
filename = "material_check_stress_plane_strain_finite_deformation.dat";
} else {
SUCCEED();
return;
}
this->initModel(_static, filename);
auto & solver = this->model->getNonLinearSolver();
solver.set("max_iterations", 2);
solver.set("threshold", 2e-4);
solver.set("convergence_type", SolveConvergenceCriteria::_residual);
this->model->solveStep();
this->checkAll();
}

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