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test_material_FE2.cc
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Fri, Nov 1, 06:28

test_material_FE2.cc
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/**
* @file test_material_FE2.cc
* @author Aurelia Isabel Cuba Ramos <aurelia.cubaramos@epfl.ch>
* @date Sun Jan 31 12:27:02 2016
*
* @brief test the material FE2
*
* @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 "solid_mechanics_model.hh"
#include "material_FE2.hh"
using namespace akantu;
/* -------------------------------------------------------------------------- */
/* Main */
/* -------------------------------------------------------------------------- */
int main(int argc, char *argv[]) {
debug::setDebugLevel(dblWarning);
initialize("material.dat" ,argc, argv);
StaticCommunicator & comm = akantu::StaticCommunicator::getStaticCommunicator();
Int psize = comm.getNbProc();
Int prank = comm.whoAmI();
/// input parameters for the simulation
const UInt spatial_dimension = 2;
const ParserSection & parser = getUserParser();
std::string mesh_file = parser.getParameter("mesh_file" );
Matrix<Real> prestrain_increment = parser.getParameter("prestrain_increment");
UInt total_steps = parser.getParameter("total_steps");
Mesh mesh(spatial_dimension);
akantu::MeshPartition * partition = NULL;
if(prank == 0) {
mesh.read(mesh_file);
/// partition the mesh
partition = new MeshPartitionScotch(mesh, spatial_dimension);
partition->partitionate(psize);
}
/// model creation
SolidMechanicsModel model(mesh);
/// model intialization
model.initParallel(partition);
delete partition;
/// set the material selector
MaterialSelector * mat_selector;
mat_selector = new MaterialSelector();
mat_selector->setFallback(3);
model.setMaterialSelector(*mat_selector);
model.initFull(SolidMechanicsModelOptions(_static));
/* -------------------------------------------------------------------------- */
/// boundary conditions
mesh.createGroupsFromMeshData<std::string>("physical_names"); // creates groups from mesh names
model.applyBC(BC::Dirichlet::FixedValue(0, _x), "left");
model.applyBC(BC::Dirichlet::FixedValue(0, _y), "bottom");
// model.applyBC(BC::Dirichlet::FixedValue(1.e-2, _y), "top");
model.setBaseName ("macro_mesh");
model.addDumpFieldVector("displacement");
model.addDumpField ("stress" );
model.addDumpField ("grad_u" );
model.addDumpField ("eigen_grad_u" );
model.addDumpField ("blocked_dofs" );
model.addDumpField ("material_index" );
model.addDumpField ("material_stiffness" );
model.dump();
/// solve system
model.assembleStiffnessMatrix();
Real error = 0;
bool converged= model.solveStep<_scm_newton_raphson_tangent_not_computed, _scc_increment>(1e-10, error, 2);
std::cout << "the error is: " << error << std::endl;
AKANTU_DEBUG_ASSERT(converged, "Did not converge");
/// simulate the advancement of the reaction
MaterialFE2<spatial_dimension> & mat = dynamic_cast<MaterialFE2<spatial_dimension> & >(model.getMaterial("FE2_mat"));
Matrix<Real> current_prestrain(spatial_dimension, spatial_dimension, 0.);
for (UInt i = 0; i < total_steps; ++i) {
model.dump();
current_prestrain += prestrain_increment;
mat.advanceASR(current_prestrain);
model.dump();
/// solve for new displacement at the macro-scale
model.assembleStiffnessMatrix();
model.solveStep<_scm_newton_raphson_tangent_not_computed, _scc_increment>(1e-10, error, 2);
std::cout << "the error is: " << error << std::endl;
AKANTU_DEBUG_ASSERT(converged, "Did not converge");
}
model.dump();
finalize();
return EXIT_SUCCESS;
}

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