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new_local_material.cc
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Wed, Dec 25, 18:15

new_local_material.cc
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/**
* @file new_local_material.cc
*
* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Marion Estelle Chambart <marion.chambart@epfl.ch>
*
* @date creation: Fri Apr 20 2012
* @date last modification: Mon Apr 07 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 <iostream>
/* -------------------------------------------------------------------------- */
#include "solid_mechanics_model.hh"
#include "local_material_damage.hh"
using namespace akantu;
#define bar_length 10.
#define bar_height 4.
akantu::Real eps = 1e-10;
int main(int argc, char *argv[]) {
akantu::initialize("material.dat", argc, argv);
UInt max_steps = 10000;
Real epot, ekin;
const UInt spatial_dimension = 2;
Mesh mesh(spatial_dimension);
mesh.read("barre_trou.msh");
mesh.createGroupsFromMeshData<std::string>("physical_names");
/// model creation
SolidMechanicsModel model(mesh);
/// model initialization
model.initFull(SolidMechanicsModelOptions(_explicit_lumped_mass, true));
model.registerNewCustomMaterials<LocalMaterialDamage>("local_damage");
model.initMaterials();
std::cout << model.getMaterial(0) << std::endl;
Real time_step = model.getStableTimeStep();
model.setTimeStep(time_step/10.);
/// Dirichlet boundary conditions
model.applyBC(BC::Dirichlet::FixedValue(0.0, _x), "Fixed_x");
model.applyBC(BC::Dirichlet::FixedValue(0.0, _y), "Fixed_y");
// Neumann boundary condition
Matrix<Real> stress(2,2);
stress.eye(3e2);
model.applyBC(BC::Neumann::FromStress(stress), "Traction");
model.setBaseName("local_material");
model.addDumpField("displacement");
model.addDumpField("velocity" );
model.addDumpField("acceleration");
model.addDumpField("force" );
model.addDumpField("residual" );
model.addDumpField("grad_u" );
model.addDumpField("stress" );
model.addDumpField("damage" );
model.dump();
for(UInt s = 0; s < max_steps; ++s) {
model.explicitPred();
model.updateResidual();
model.updateAcceleration();
model.explicitCorr();
epot = model.getPotentialEnergy();
ekin = model.getKineticEnergy();
if(s % 100 == 0) std::cout << s << " " << epot << " " << ekin << " " << epot + ekin
<< std::endl;
if(s % 100 == 0) model.dump();
}
akantu::finalize();
return EXIT_SUCCESS;
}

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