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test_solid_mechanics_model_segment_parallel.cc
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test_solid_mechanics_model_segment_parallel.cc
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/**
* @file test_solid_mechanics_model_segment_parallel.cc
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @date Tue Jul 27 14:34:13 2010
*
* @brief test of the class SolidMechanicsModel
*
* @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.hh"
#include "mesh_io_msh.hh"
#include "solid_mechanics_model.hh"
#include "material.hh"
#include "static_communicator.hh"
#include "distributed_synchronizer.hh"
#include "mesh_partition_scotch.hh"
/* -------------------------------------------------------------------------- */
#ifdef AKANTU_USE_IOHELPER
# include "io_helper.hh"
#endif //AKANTU_USE_IOHELPER
#define CHECK_STRESS
int main(int argc, char *argv[])
{
akantu::UInt spatial_dimension = 1;
#ifdef AKANTU_USE_IOHELPER
akantu::ElementType type = akantu::_segment_3;
#endif //AKANTU_USE_IOHELPER
akantu::UInt max_steps = 10000;
akantu::Real time_factor = 0.2;
akantu::initialize(argc, argv);
akantu::Mesh mesh(spatial_dimension);
akantu::StaticCommunicator & comm = akantu::StaticCommunicator::getStaticCommunicator();
akantu::Int psize = comm.getNbProc();
akantu::Int prank = comm.whoAmI();
akantu::debug::setDebugLevel(akantu::dblWarning);
akantu::MeshPartition * partition = NULL;
if(prank == 0) {
akantu::MeshIOMSH mesh_io;
mesh_io.read("segment.msh", mesh);
partition = new akantu::MeshPartitionScotch(mesh, spatial_dimension);
partition->partitionate(psize);
}
akantu::SolidMechanicsModel model(mesh);
model.initParallel(partition);
akantu::UInt nb_nodes = model.getFEM().getMesh().getNbNodes();
#ifdef AKANTU_USE_IOHELPER
akantu::UInt nb_element = model.getFEM().getMesh().getNbElement(type);
#endif //AKANTU_USE_IOHELPER
/// model initialization
model.initVectors();
/// set vectors to 0
memset(model.getForce().values, 0,
spatial_dimension*nb_nodes*sizeof(akantu::Real));
memset(model.getVelocity().values, 0,
spatial_dimension*nb_nodes*sizeof(akantu::Real));
memset(model.getAcceleration().values, 0,
spatial_dimension*nb_nodes*sizeof(akantu::Real));
memset(model.getDisplacement().values, 0,
spatial_dimension*nb_nodes*sizeof(akantu::Real));
model.initExplicit();
model.initModel();
model.readMaterials("material.dat");
model.initMaterials();
std::cout << model.getMaterial(0) << std::endl;
model.assembleMassLumped();
#ifdef AKANTU_USE_IOHELPER
/// set to 0 only for the first paraview dump
memset(model.getResidual().values, 0,
spatial_dimension*nb_nodes*sizeof(akantu::Real));
#endif //AKANTU_USE_IOHELPER
/// boundary conditions
for (akantu::UInt i = 0; i < nb_nodes; ++i) {
model.getDisplacement().values[spatial_dimension*i] = model.getFEM().getMesh().getNodes().values[i] / 100. ;
if(model.getFEM().getMesh().getNodes().values[spatial_dimension*i] <= 1e-15)
model.getBoundary().values[i] = true;
}
memset(model.getForce().values, 0,
spatial_dimension*nb_nodes*sizeof(akantu::Real));
// model.synchronizeBoundaries();
akantu::Real time_step = model.getStableTimeStep() * time_factor;
std::cout << "Time Step = " << time_step << "s" << std::endl;
model.setTimeStep(time_step);
#ifdef AKANTU_USE_IOHELPER
iohelper::DumperParaview dumper;
dumper.SetMode(iohelper::TEXT);
dumper.SetParallelContext(prank, psize);
dumper.SetPoints(model.getFEM().getMesh().getNodes().values,
spatial_dimension, nb_nodes, "line_para");
dumper.SetConnectivity((int *)model.getFEM().getMesh().getConnectivity(type).values,
iohelper::LINE2, nb_element, iohelper::C_MODE);
dumper.AddNodeDataField(model.getDisplacement().values,
spatial_dimension, "displacements");
dumper.AddNodeDataField(model.getVelocity().values,
spatial_dimension, "velocity");
dumper.AddNodeDataField(model.getResidual().values,
spatial_dimension, "force");
dumper.AddNodeDataField(model.getAcceleration().values,
spatial_dimension, "acceleration");
dumper.AddNodeDataField(model.getMass().values,
spatial_dimension, "mass");
double * part = new double[nb_element];
for (unsigned int i = 0; i < nb_element; ++i)
part[i] = prank;
dumper.AddElemDataField(part, 1, "partitions");
dumper.SetPrefix("paraview/");
dumper.Init();
dumper.Dump();
#endif //AKANTU_USE_IOHELPER
for(akantu::UInt s = 1; s <= max_steps; ++s) {
model.explicitPred();
model.updateResidual();
model.updateAcceleration();
model.explicitCorr();
akantu::Real epot = model.getPotentialEnergy();
akantu::Real ekin = model.getKineticEnergy();
if(prank == 0) {
std::cout << s << " " << epot << " " << ekin << " " << epot + ekin
<< std::endl;
}
#ifdef AKANTU_USE_IOHELPER
// if(s % 100 == 0)
dumper.Dump();
#endif //AKANTU_USE_IOHELPER
if(s % 10 == 0) std::cerr << "passing step " << s << "/" << max_steps << std::endl;
}
#ifdef AKANTU_USE_IOHELPER
delete [] part;
#endif //AKANTU_USE_IOHELPER
akantu::finalize();
return EXIT_SUCCESS;
}

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