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test_solid_mechanics_model_cube3d_tetra10.cc
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test_solid_mechanics_model_cube3d_tetra10.cc
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/**
* @file test_solid_mechanics_model_cube3d_tetra10.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Peter Spijker <peter.spijker@epfl.ch>
*
* @date creation: Mon Dec 06 2010
* @date last modification: Thu Jun 05 2014
*
* @brief test of the class SolidMechanicsModel on the 3d cube
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 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 <iostream>
/* -------------------------------------------------------------------------- */
#include "solid_mechanics_model.hh"
/* -------------------------------------------------------------------------- */
int main(int argc, char *argv[])
{
akantu::initialize("material.dat", argc, argv);
akantu::UInt max_steps = 1000;
akantu::Real epot, ekin;
akantu::Mesh mesh(3);
mesh.read("cube2.msh");
akantu::SolidMechanicsModel model(mesh);
/// model initialization
model.initFull();
akantu::Real time_step = model.getStableTimeStep();
model.setTimeStep(time_step/10.);
model.assembleMassLumped();
std::cout << model << std::endl;
/// boundary conditions
akantu::Real eps = 1e-2;
akantu::UInt nb_nodes = model.getFEEngine().getMesh().getNbNodes();
for (akantu::UInt i = 0; i < nb_nodes; ++i) {
model.getDisplacement().storage()[3*i] = model.getFEEngine().getMesh().getNodes().storage()[3*i] / 100.;
if(model.getFEEngine().getMesh().getNodes().storage()[3*i] <= eps) {
model.getBlockedDOFs().storage()[3*i ] = true;
}
if(model.getFEEngine().getMesh().getNodes().storage()[3*i + 1] <= eps) {
model.getBlockedDOFs().storage()[3*i + 1] = true;
}
}
// model.getDisplacement().storage()[1] = 0.1;
model.setBaseName("cube3d_t10");
model.addDumpField("displacement");
model.addDumpField("mass" );
model.addDumpField("velocity" );
model.addDumpField("acceleration");
model.addDumpField("force" );
model.addDumpField("residual" );
model.addDumpField("stress" );
model.addDumpField("strain" );
model.dump();
std::ofstream energy;
energy.open("energy.csv");
energy << "id,epot,ekin,tot" << std::endl;
for(akantu::UInt s = 0; s < max_steps; ++s) {
model.explicitPred();
model.updateResidual();
model.updateAcceleration();
model.explicitCorr();
epot = model.getPotentialEnergy();
ekin = model.getKineticEnergy();
std::cerr << "passing step " << s << "/" << max_steps << std::endl;
energy << s << "," << epot << "," << ekin << "," << epot + ekin
<< std::endl;
if(s % 10 == 0) model.dump();
}
energy.close();
akantu::finalize();
return EXIT_SUCCESS;
}

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