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test_solid_mechanics_model_implicit_2d.cc
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test_solid_mechanics_model_implicit_2d.cc
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/**
* @file test_solid_mechanics_model_implicit_2d.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date Thu Mar 03 16:09:49 2011
*
* @brief test of traction in implicit
*
* @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 <limits>
#include <fstream>
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "mesh.hh"
#include "mesh_io_msh.hh"
#include "solid_mechanics_model.hh"
#include "material.hh"
#include "static_communicator.hh"
#include "mesh_partition_scotch.hh"
/* -------------------------------------------------------------------------- */
#ifdef AKANTU_USE_SCOTCH
#include "mesh_partition_scotch.hh"
#endif
#define bar_length 1
#define bar_height 1
/* -------------------------------------------------------------------------- */
int main(int argc, char *argv[])
{
akantu::debug::setDebugLevel(akantu::dblWarning);
akantu::initialize(argc, argv);
akantu::UInt spatial_dimension = 2;
akantu::Mesh mesh(spatial_dimension);
akantu::StaticCommunicator & comm = akantu::StaticCommunicator::getStaticCommunicator();
akantu::Int psize = comm.getNbProc();
akantu::Int prank = comm.whoAmI();
akantu::MeshPartition * partition = NULL;
if(prank == 0) {
akantu::MeshIOMSH mesh_io;
mesh_io.read("square_implicit2.msh", mesh);
partition = new akantu::MeshPartitionScotch(mesh, spatial_dimension);
// partition->reorder();
partition->partitionate(psize);
}
akantu::SolidMechanicsModel model(mesh);
/// model initialization
model.initParallel(partition);
delete partition;
model.initFull("material.dat", akantu::_static);
if (prank == 0)
std::cout << model.getMaterial(0) << std::endl;
/// boundary conditions
const akantu::Array<akantu::Real> & position = mesh.getNodes();
akantu::Array<bool> & boundary = model.getBoundary();
akantu::Array<akantu::Real> & displacment = model.getDisplacement();
akantu::UInt nb_nodes = model.getFEM().getMesh().getNbNodes();
for (akantu::UInt n = 0; n < nb_nodes; ++n) {
if(position(n,0) < akantu::Math::getTolerance()) boundary(n,0) = true;
if(position(n,1) < akantu::Math::getTolerance()) boundary(n,1) = true;
if(std::abs(position(n,0) - bar_length) < akantu::Math::getTolerance()) {
boundary(n,0) = true;
displacment(n,0) = 0.1;
}
}
akantu::UInt count = 0;
model.updateResidual();
model.setBaseName("implicit_2d");
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.computeStresses();
model.dump();
akantu::Real norm;
model.assembleStiffnessMatrix();
while(!model.testConvergenceResidual(1e-3, norm) && (count < 100)) {
if (prank == 0)
std::cout << "Iter : " << ++count << " - residual norm : " << norm << std::endl;
model.solveStatic();
model.updateResidual();
}
model.computeStresses();
model.dump();
akantu::finalize();
return EXIT_SUCCESS;
}

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