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test_embedded_element_matrix.cc
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test_embedded_element_matrix.cc
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/**
* @file test_embedded_element_matrix.cc
*
* @author Lucas Frerot <lucas.frerot@epfl.ch>
*
* @date creation: Wed Mar 25 2015
* @date last modification: Wed Sep 12 2018
*
* @brief test of the class EmbeddedInterfaceModel
*
*
* @section LICENSE
*
* Copyright (©) 2015-2021 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 "embedded_interface_model.hh"
#include "sparse_matrix_aij.hh"
#include "sparse_solver.hh"
using namespace akantu;
int main(int argc, char * argv[]) {
debug::setDebugLevel(dblWarning);
initialize("embedded_element.dat", argc, argv);
constexpr UInt dim = 2;
constexpr ElementType type = _segment_2;
const Real height = 0.4;
Mesh mesh(dim);
mesh.read("triangle.msh");
Mesh reinforcement_mesh(dim, "reinforcement_mesh");
auto & nodes = reinforcement_mesh.getNodes();
nodes.push_back(Vector<Real>({0, height}));
nodes.push_back(Vector<Real>({1, height}));
reinforcement_mesh.addConnectivityType(type);
auto & connectivity = reinforcement_mesh.getConnectivity(type);
connectivity.push_back(Vector<UInt>({0, 1}));
Array<std::string> names_vec(1, 1, "reinforcement", "reinforcement_names");
reinforcement_mesh.getElementalData<std::string>("physical_names")
.alloc(1, 1, type);
reinforcement_mesh.getData<std::string>("physical_names")(type).copy(
names_vec);
EmbeddedInterfaceModel model(mesh, reinforcement_mesh, dim);
model.initFull(_analysis_method = _static);
if (model.getInterfaceMesh().getNbElement(type) != 1)
return EXIT_FAILURE;
if (model.getInterfaceMesh().getSpatialDimension() != 2)
return EXIT_FAILURE;
try { // matrix should be singular
model.solveStep();
} catch (debug::SingularMatrixException & e) {
std::cerr << "Matrix is singular, relax, everything is fine :)"
<< std::endl;
} catch (debug::Exception & e) {
std::cerr << "Unexpceted error: " << e.what() << std::endl;
throw e;
}
SparseMatrixAIJ & K =
dynamic_cast<SparseMatrixAIJ &>(model.getDOFManager().getMatrix("K"));
K.saveMatrix("stiffness.mtx");
Math::setTolerance(1e-8);
// Testing the assembled stiffness matrix
if (!Math::are_float_equal(K(0, 0), 1. - height) ||
!Math::are_float_equal(K(0, 2), height - 1.) ||
!Math::are_float_equal(K(2, 0), height - 1.) ||
!Math::are_float_equal(K(2, 2), 1. - height))
return EXIT_FAILURE;
return EXIT_SUCCESS;
}

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