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rAKA/test/test_model/test_solid_mechanics_model/test_materials/test_local_material.cc
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test_local_material.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 <iostream>
/* -------------------------------------------------------------------------- */
#include "local_material_damage.hh"
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char * argv[]) {
akantu::initialize("material.dat", argc, argv);
Int max_steps = 1100;
const Int spatial_dimension = 2;
Mesh mesh(spatial_dimension);
mesh.read("mesh_section_gap.msh");
/// model initialization
MaterialFactory::getInstance().registerAllocator(
"local_damage",
[](UInt, const ID &, SolidMechanicsModel & model,
const ID & id) -> std::unique_ptr<Material> {
return std::make_unique<LocalMaterialDamage>(model, id);
});
SolidMechanicsModel model(mesh);
model.initFull();
std::cout << model.getMaterial(0) << std::endl;
model.addDumpField("damage");
model.addDumpField("strain");
model.addDumpField("stress");
model.addDumpFieldVector("displacement");
model.addDumpFieldVector("external_force");
model.addDumpFieldVector("internal_force");
model.dump();
Real time_step = model.getStableTimeStep();
model.setTimeStep(time_step / 2.5);
/// Dirichlet boundary conditions
model.applyBC(BC::Dirichlet::FixedValue(0.0, _x), "Fixed");
// model.applyBC(BC::Dirichlet::FixedValue(0.0, _y), "Fixed");
Matrix<Real> stress = Matrix<Real, 2, 2>::Identity() * 5e7;
model.applyBC(BC::Neumann::FromHigherDim(stress), "Traction");
for (Int s = 0; s < max_steps; ++s) {
model.solveStep();
}
model.dump();
// This should throw a bad_cast if not the proper material
auto & mat =
dynamic_cast<LocalMaterialDamage &>(model.getMaterial("concrete"));
const auto & filter = mat.getElementFilter();
for (const auto & type : filter.elementTypes(spatial_dimension)) {
std::cout << mat.getDamage(type) << std::endl;
}
// This part of the test is to mesh dependent and as nothing to do with the
// fact that we can create a user defined material or not
// const auto & lower_bounds = mesh.getLowerBounds();
// const auto & upper_bounds = mesh.getUpperBounds();
// Real L = upper_bounds(_x) - lower_bounds(_x);
// Real H = upper_bounds(_y) - lower_bounds(_y);
// const auto & filter = model.getMaterial("concrete").getElementFilter();
// Vector<Real> barycenter(spatial_dimension);
// for (auto & type : filter.elementTypes(spatial_dimension)) {
// UInt nb_elem = mesh.getNbElement(type);
// const UInt nb_gp = model.getFEEngine().getNbIntegrationPoints(type);
// const auto & material_damage_array =
// model.getMaterial(0).getArray<Real>("damage", type);
// UInt cpt = 0;
// for (auto nel : arange(nb_elem)) {
// mesh.getBarycenter({type, nel, _not_ghost}, barycenter);
// if ((std::abs(barycenter(_x) - (L / 2) + 0.025) < 0.025) &&
// (std::abs(barycenter(_y) - (H / 2) + 0.045) < 0.045)) {
// if (material_damage_array(cpt, 0) < 0.9) {
// std::terminate();
// } else {
// std::cout << "element " << nel << " is correctly broken" <<
// std::endl;
// }
// }
// cpt += nb_gp;
// }
// }
akantu::finalize();
return 0;
}
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