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test_local_material.cc
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test_local_material.cc
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/**
* @file test_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>
* @author Clement Roux-Langlois <clement.roux@epfl.ch>
*
* @date creation: Fri Nov 26 2010
* @date last modification: Fri Sep 19 2014
*
* @brief test of the class SolidMechanicsModel with custom local damage on a
* notched plate
*
* @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;
int main(int argc, char *argv[])
{
akantu::initialize("material.dat", argc, argv);
UInt max_steps = 1100;
const UInt spatial_dimension = 2;
Mesh mesh(spatial_dimension);
mesh.read("mesh_section_gap.msh");
mesh.createGroupsFromMeshData<std::string>("physical_names");
SolidMechanicsModel model(mesh);
/// model initialization
model.initFull(SolidMechanicsModelOptions(_explicit_lumped_mass, true));
model.registerNewCustomMaterials<LocalMaterialDamage>("local_damage");
model.initMaterials();
Real time_step = model.getStableTimeStep();
model.setTimeStep(time_step/2.5);
model.assembleMassLumped();
std::cout << model << std::endl;
/// Dirichlet boundary conditions
model.applyBC(BC::Dirichlet::FixedValue(0.0, _x), "Fixed");
// model.applyBC(BC::Dirichlet::FixedValue(0.0, _y), "Fixed");
// Boundary condition (Neumann)
Matrix<Real> stress(2,2);
stress.eye(7e5);
model.applyBC(BC::Neumann::FromHigherDim(stress), "Traction");
/*model.setBaseName("damage_local");
model.addDumpFieldVector("displacement");
model.addDumpField("velocity" );
model.addDumpField("acceleration");
model.addDumpField("force" );
model.addDumpField("residual" );
model.addDumpField("damage" );
model.addDumpField("stress" );
model.addDumpField("strain" );
model.dump();*/
for(UInt s = 0; s < max_steps; ++s) {
if(s < 100){
// Boundary condition (Neumann)
stress.eye(7e5);
model.applyBC(BC::Neumann::FromHigherDim(stress), "Traction");
}
model.solveStep();
/*epot = model.getPotentialEnergy();
ekin = model.getKineticEnergy();
if(s % 10 == 0) std::cout << s << " " << epot << " " << ekin << " " << epot + ekin
<< std::endl;
if(s % 10 == 0) std::cout << "Step " << s+1 << "/" << max_steps <<std::endl;
if(s % 10 == 0) model.dump();*/
}
const Vector<Real> & lower_bounds = mesh.getLowerBounds();
const Vector<Real> & upper_bounds = mesh.getUpperBounds();
Real L = upper_bounds(0) - lower_bounds(0);
const ElementTypeMapArray<UInt> & filter = model.getMaterial(0).getElementFilter();
ElementTypeMapArray<UInt>::type_iterator it = filter.firstType(spatial_dimension);
ElementTypeMapArray<UInt>::type_iterator end = filter.lastType(spatial_dimension);
Vector<Real> barycenter(spatial_dimension);
bool is_fully_damaged = false;
for(; it != end; ++it) {
UInt nb_elem = mesh.getNbElement(*it);
const UInt nb_gp = model.getFEEngine().getNbQuadraturePoints(*it);
Array<Real> & material_damage_array = model.getMaterial(0).getArray("damage", *it);
UInt cpt = 0;
for(UInt nel = 0; nel < nb_elem ; ++nel){
if (material_damage_array(cpt,0) > 0.9){
is_fully_damaged = true;
mesh.getBarycenter(nel,*it,barycenter.storage());
if( (std::abs(barycenter(0)-(L/2)) < (L/10) ) ) {
return EXIT_FAILURE;
}
}
cpt += nb_gp;
}
}
if(!is_fully_damaged)
return EXIT_FAILURE;
akantu::finalize();
return EXIT_SUCCESS;
}

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