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damage_non_local.cc
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damage_non_local.cc
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/**
* @file damage_non_local.cc
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @date Fri Sep 30 10:06:56 2011
*
* @brief
*
* @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 "solid_mechanics_model.hh"
#include "material.hh"
#include "static_communicator.hh"
#include "mesh_partition_scotch.hh"
#include "io_helper_tools.hh"
/* -------------------------------------------------------------------------- */
using namespace akantu;
const UInt spatial_dimension = 2;
const Real bar_length = 10.;
/* -------------------------------------------------------------------------- */
int main(int argc, char *argv[]) {
debug::setDebugLevel(akantu::dblWarning);
akantu::initialize(&argc, &argv);
ElementType type = _triangle_6;
UInt max_steps = 15000;
Mesh mesh(spatial_dimension);
StaticCommunicator * comm = StaticCommunicator::getStaticCommunicator();
Int psize = comm->getNbProc();
Int prank = comm->whoAmI();
akantu::MeshPartition * partition = NULL;
if(prank == 0) {
MeshIOMSH mesh_io;
mesh_io.read("bar.msh", mesh);
partition = new MeshPartitionScotch(mesh, spatial_dimension);
partition->partitionate(psize);
}
akantu::SolidMechanicsModel model(mesh);
model.initParallel(partition);
model.initModel();
model.initVectors();
model.initExplicit();
model.readMaterials("material.dat");
model.initMaterials();
/// set vectors to 0
model.getForce().clear();
model.getVelocity().clear();
model.getAcceleration().clear();
model.getDisplacement().clear();
/// boundary conditions
Real eps = 1e-16;
const akantu::Vector<akantu::Real> & pos = mesh.getNodes();
akantu::Vector<akantu::Real> & disp = model.getDisplacement();
akantu::Vector<bool> & boun = model.getBoundary();
for (UInt i = 0; i < mesh.getNbNodes(); ++i) {
// disp(i, 0) = pos(i,0) * 0.1;
if(std::abs(pos(i, 0) - bar_length) <= eps) boun(i, 0) = true;
if(std::abs(pos(i, 0) - 0) <= eps) boun(i, 0) = true;
}
model.assembleMassLumped();
Real time_step = model.getStableTimeStep() * .8;
if(prank == 0)
std::cout << "Time Step = " << time_step << "s" << std::endl;
model.setTimeStep(time_step);
model.updateResidual();
DumperParaview dumper;
paraviewInit(dumper, model, type, "damage_nl_fine");
// paraviewInit(dumper, model, type, "damage");
std::ofstream energy;
energy.open("energy_damage_nl_fine.csv");
// energy.open("energy_damage.csv");
energy << "id,rtime,epot,ekin,tot" << std::endl;
/* ------------------------------------------------------------------------ */
/* Main loop */
/* ------------------------------------------------------------------------ */
for(akantu::UInt s = 1; s <= max_steps; ++s) {
Real apply_disp = std::min(10e-4, (s-1)*time_step * 1e-6*1e6);
for (UInt i = 0; i < mesh.getNbNodes(); ++i) {
if(std::abs(pos(i, 0) - bar_length) <= eps) disp(i, 0) = apply_disp;
if(std::abs(pos(i, 0) - 0.) <= eps) disp(i, 0) = -apply_disp;
}
model.explicitPred();
model.updateResidual();
model.updateAcceleration();
model.explicitCorr();
Real epot = model.getPotentialEnergy();
Real ekin = model.getKineticEnergy();
energy << s << "," << (s-1)*time_step << "," << epot << "," << ekin << "," << epot + ekin
<< std::endl;
if(s % 100 == 0) {
std::cout << "." << std::flush;
paraviewDump(dumper);
}
}
std::cout << std::endl;
energy.close();
akantu::finalize();
return EXIT_SUCCESS;
}

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