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test_material_orthotropic.cc
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Fri, May 3, 21:51

test_material_orthotropic.cc
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/**
* @file test_material_orthotropic.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Sun Oct 19 2014
* @date last modification: Thu May 09 2019
*
* @brief test of the class SolidMechanicsModel
*
*
* @section LICENSE
*
* Copyright (©) 2010-2021 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 "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
#include <fstream>
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char * argv[]) {
// akantu::initialize("orthotropic.dat", argc, argv);
akantu::initialize("orthotropic.dat", argc, argv);
UInt max_steps = 1000;
Real epot, ekin;
Mesh mesh(2);
mesh.read("square.msh");
mesh.createBoundaryGroupFromGeometry();
SolidMechanicsModel model(mesh);
/// model initialization
model.initFull();
Real time_step = model.getStableTimeStep();
model.setTimeStep(time_step / 10.);
model.assembleMassLumped();
std::cout << model << std::endl;
// Boundary condition (Neumann)
Matrix<Real> stress(2, 2);
stress.eye(Real(1e3));
model.applyBC(BC::Neumann::FromHigherDim(stress), "boundary_0");
model.setBaseName("square-orthotrope");
model.addDumpFieldVector("displacement");
model.addDumpField("mass");
model.addDumpField("velocity");
model.addDumpField("acceleration");
model.addDumpFieldVector("external_force");
model.addDumpFieldVector("internal_force");
model.addDumpField("stress");
model.addDumpField("grad_u");
model.dump();
std::ofstream energy;
energy.open("energy.csv");
energy << "id,epot,ekin,tot" << std::endl;
for (UInt s = 0; s < max_steps; ++s) {
model.solveStep();
epot = model.getEnergy("potential");
ekin = model.getEnergy("kinetic");
std::cerr << "passing step " << s << "/" << max_steps << std::endl;
energy << s << "," << epot << "," << ekin << "," << epot + ekin
<< std::endl;
if (s % 100 == 0)
model.dump();
}
energy.close();
finalize();
return EXIT_SUCCESS;
}

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