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test_solid_mechanics_model_circle_2.cc
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Tue, May 28, 05:13

test_solid_mechanics_model_circle_2.cc
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/**
* @file test_solid_mechanics_model_circle_2.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Tue Oct 26 2010
* @date last modification: Thu Apr 03 2014
*
* @brief test of the class SolidMechanicsModel
*
* @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"
/* -------------------------------------------------------------------------- */
using namespace akantu;
int main(int argc, char *argv[])
{
akantu::initialize("material.dat", argc, argv);
UInt max_steps = 10000;
Real epot, ekin, wext = 0;
Mesh mesh(2);
mesh.read("circle2.msh");
mesh.createBoundaryGroupFromGeometry();
SolidMechanicsModel model(mesh);
/// model initialization
model.initFull();
Real time_step = model.getStableTimeStep() / 10.;
model.setTimeStep(time_step);
std::cout << "-- Time step : " << time_step << " --" << std::endl;
model.assembleMassLumped();
// Boundary condition (Neumann)
Matrix<Real> stress(2,2);
stress.eye(Real(1e3));
model.applyBC(BC::Neumann::FromHigherDim(stress), "boundary_0");
model.setBaseName("circle2");
model.addDumpFieldVector("displacement");
model.addDumpFieldVector("force" );
model.addDumpFieldVector("residual" );
model.addDumpField("mass" );
model.addDumpField("velocity" );
model.addDumpField("acceleration");
model.addDumpField("stress" );
model.addDumpField("strain" );
model.dump();
for(UInt s = 0; s < max_steps; ++s) {
model.explicitPred();
model.updateResidual();
model.updateAcceleration();
model.explicitCorr();
epot = model.getEnergy("potential");
ekin = model.getEnergy("kinetic");
wext += model.getEnergy("external work");
std::cout << s << "," << epot << "," << ekin << "," << wext << "," << epot + ekin - wext
<< std::endl;
if(s % 100 == 0) model.dump();
}
return EXIT_SUCCESS;
}

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