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test_solid_mechanics_model_bar_traction2d_parallel.cc
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test_solid_mechanics_model_bar_traction2d_parallel.cc
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/**
* @file test_solid_mechanics_model_bar_traction2d_parallel.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Sun Sep 12 2010
* @date last modification: Thu Jun 05 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 <limits>
#include <fstream>
#include "mpi.h"
/* -------------------------------------------------------------------------- */
#include "solid_mechanics_model.hh"
using namespace akantu;
int main(int argc, char *argv[]) {
akantu::UInt spatial_dimension = 2;
akantu::UInt max_steps = 5000;
akantu::Real time_factor = 0.8;
akantu::initialize("material.dat", 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) {
mesh.read("bar2.msh");
partition = new akantu::MeshPartitionScotch(mesh, spatial_dimension);
partition->partitionate(psize);
}
/* ------------------------------------------------------------------------ */
/* Initialization */
/* ------------------------------------------------------------------------ */
akantu::SolidMechanicsModel model(mesh);
/// model initialization
model.initParallel(partition);
model.initFull();
if(prank == 0)
std::cout << model.getMaterial(0) << std::endl;
model.assembleMassLumped();
akantu::UInt nb_nodes = mesh.getNbNodes();
/* ------------------------------------------------------------------------ */
/* Boundary + initial conditions */
/* ------------------------------------------------------------------------ */
akantu::Real eps = 1e-16;
const akantu::Array<akantu::Real> & pos = mesh.getNodes();
akantu::Array<akantu::Real> & disp = model.getDisplacement();
akantu::Array<bool> & boun = model.getBlockedDOFs();
for (akantu::UInt i = 0; i < nb_nodes; ++i) {
if(pos(i, 0) >= 9.) disp(i, 0) = (pos(i, 0) - 9) / 100.;
if(pos(i) <= eps) boun(i, 0) = true;
if(pos(i, 1) <= eps || pos(i, 1) >= 1 - eps ) boun(i, 1) = true;
}
model.synchronizeBoundaries();
model.updateResidual();
model.setBaseName("bar2d_parallel");
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.addDumpField("partitions" );
model.dump();
std::ofstream energy;
if(prank == 0) {
energy.open("energy_bar_2d_para.csv");
energy << "id,rtime,epot,ekin,tot" << std::endl;
}
double total_time = 0.;
/// Setting time step
akantu::Real time_step = model.getStableTimeStep() * time_factor;
if(prank == 0)
std::cout << "Time Step = " << time_step << "s" << std::endl;
model.setTimeStep(time_step);
/* ------------------------------------------------------------------------ */
/* Main loop */
/* ------------------------------------------------------------------------ */
for(akantu::UInt s = 1; s <= max_steps; ++s) {
double start = MPI_Wtime();
model.explicitPred();
model.updateResidual();
model.updateAcceleration();
model.explicitCorr();
double end = MPI_Wtime();
akantu::Real epot = model.getEnergy("potential");
akantu::Real ekin = model.getEnergy("kinetic");
total_time += end - start;
if(prank == 0 && (s % 100 == 0)) {
std::cerr << "passing step " << s << "/" << max_steps << std::endl;
}
energy << s << "," << (s-1)*time_step << "," << epot << "," << ekin << "," << epot + ekin
<< std::endl;
if(s % 100 == 0) {
model.dump();
}
}
if(prank == 0) std::cout << "Time : " << psize << " " << total_time / max_steps << " " << total_time << std::endl;
akantu::finalize();
return EXIT_SUCCESS;
}

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