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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.cc
* @author Guillaume ANCIAUX <guillaume.anciaux@epfl.ch>
* @date Tue Aug 17 11:31:22 2010
*
* @brief test of the class SolidMechanicsModel on the 3d cube
*
* @section LICENSE
*
* Copyright (©) 2010-2011 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 "aka_common.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "solid_mechanics_model.hh"
#include "material.hh"
/* -------------------------------------------------------------------------- */
#ifdef AKANTU_USE_IOHELPER
# include "io_helper.h"
#endif //AKANTU_USE_IOHELPER
int main(int argc, char *argv[])
{
akantu::UInt max_steps = 1000;
akantu::Real epot, ekin;
#ifdef AKANTU_USE_IOHELPER
akantu::ElementType type = akantu::_tetrahedron_10;
akantu::UInt paratype = TETRA2;
#endif //AKANTU_USE_IOHELPER
akantu::Mesh mesh(3);
akantu::MeshIOMSH mesh_io;
mesh_io.read("cube2.msh", mesh);
akantu::SolidMechanicsModel * model = new akantu::SolidMechanicsModel(mesh);
/// model initialization
model->initVectors();
/// initialize the vectors
akantu::UInt nb_nodes = model->getFEM().getMesh().getNbNodes();
memset(model->getForce().values, 0, 3*nb_nodes*sizeof(akantu::Real));
memset(model->getVelocity().values, 0, 3*nb_nodes*sizeof(akantu::Real));
memset(model->getAcceleration().values, 0, 3*nb_nodes*sizeof(akantu::Real));
memset(model->getDisplacement().values, 0, 3*nb_nodes*sizeof(akantu::Real));
model->readMaterials("material.dat");
model->initMaterials();
model->initModel();
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;
for (akantu::UInt i = 0; i < nb_nodes; ++i) {
model->getDisplacement().values[3*i] = model->getFEM().getMesh().getNodes().values[3*i] / 100.;
if(model->getFEM().getMesh().getNodes().values[3*i] <= eps) {
model->getBoundary().values[3*i ] = true;
}
if(model->getFEM().getMesh().getNodes().values[3*i + 1] <= eps) {
model->getBoundary().values[3*i + 1] = true;
}
}
// model->getDisplacement().values[1] = 0.1;
#ifdef AKANTU_USE_IOHELPER
DumperParaview dumper;
// dumper.SetMode(TEXT);
dumper.SetPoints(model->getFEM().getMesh().getNodes().values, 3, nb_nodes, "coordinates2");
dumper.SetConnectivity((int *)model->getFEM().getMesh().getConnectivity(type).values,
paratype, model->getFEM().getMesh().getNbElement(type), C_MODE);
dumper.AddNodeDataField(model->getDisplacement().values, 3, "displacements");
dumper.AddNodeDataField(model->getVelocity().values, 3, "velocity");
dumper.AddNodeDataField(model->getMass().values, 1, "mass");
dumper.AddNodeDataField(model->getResidual().values, 3, "force");
dumper.AddElemDataField(model->getMaterial(0).getStrain(type).values, 9, "strain");
dumper.AddElemDataField(model->getMaterial(0).getStress(type).values, 9, "stress");
dumper.SetPrefix("paraview/");
dumper.Init();
#endif //AKANTU_USE_IOHELPER
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;
#ifdef AKANTU_USE_IOHELPER
if(s % 10 == 0) dumper.Dump();
#endif //AKANTU_USE_IOHELPER
}
energy.close();
return EXIT_SUCCESS;
}

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