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test_regular_grid_tetrahedron_4_nodes.cc
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Fri, May 10, 07:16

test_regular_grid_tetrahedron_4_nodes.cc
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/**
* @file test_regular_grid_tetrahedron_4_nodes.cc
* @author David Kammer <david.kammer@epfl.ch>
* @date Tue Oct 26 16:58:42 2010
*
* @brief test regular grid neighbor structure for 3d case
*
* @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 "mesh_io_msh.hh"
#include "mesh_utils.hh"
#include "solid_mechanics_model.hh"
#include "material.hh"
#include "contact.hh"
#include "contact_rigid.hh"
#include "contact_neighbor_structure.hh"
#include "regular_grid_neighbor_structure.hh"
#ifdef AKANTU_USE_IOHELPER
# include "io_helper.hh"
#endif //AKANTU_USE_IOHELPER
using namespace akantu;
int main(int argc, char *argv[])
{
akantu::initialize(argc, argv);
int dim = 3;
/// load mesh
Mesh my_mesh(dim);
MeshIOMSH mesh_io;
mesh_io.read("cubes.msh", my_mesh);
/// build facet connectivity and surface id
MeshUtils::buildFacets(my_mesh,1,0);
MeshUtils::buildSurfaceID(my_mesh);
unsigned int nb_nodes = my_mesh.getNbNodes();
/// dump facet and surface information to paraview
#ifdef AKANTU_USE_IOHELPER
iohelper::DumperParaview dumper;
dumper.SetMode(iohelper::TEXT);
dumper.SetPoints(my_mesh.getNodes().values, dim, nb_nodes, "tetrahedron_4_nodes_test-surface-extraction");
dumper.SetConnectivity((int*)my_mesh.getConnectivity(_tetrahedron_4).values,
iohelper::TETRA1, my_mesh.getNbElement(_tetrahedron_4), iohelper::C_MODE);
dumper.SetPrefix("paraview/");
dumper.Init();
dumper.Dump();
#endif //AKANTU_USE_IOHELPER
/// declaration of model
SolidMechanicsModel my_model(my_mesh);
/// model initialization
my_model.initVectors();
// initialize the vectors
memset(my_model.getForce().values, 0, 3*nb_nodes*sizeof(Real));
memset(my_model.getVelocity().values, 0, 3*nb_nodes*sizeof(Real));
memset(my_model.getAcceleration().values, 0, 3*nb_nodes*sizeof(Real));
memset(my_model.getDisplacement().values, 0, 3*nb_nodes*sizeof(Real));
my_model.initModel();
my_model.readMaterials("material.dat");
my_model.initMaterials();
Real time_step = my_model.getStableTimeStep();
my_model.setTimeStep(time_step/10.);
my_model.assembleMassLumped();
/// contact declaration
Contact * contact = Contact::newContact(my_model,
_ct_rigid,
_cst_expli,
_cnst_regular_grid);
ContactRigid * my_contact = dynamic_cast<ContactRigid *>(contact);
my_contact->initContact(false);
Surface master = 0;
Surface impactor = 1;
my_contact->addMasterSurface(master);
my_contact->addImpactorSurfaceToMasterSurface(impactor, master);
my_model.updateCurrentPosition(); // neighbor structure uses current position for init
my_contact->initNeighborStructure(master);
const NodesNeighborList & my_neighbor_list = dynamic_cast<const NodesNeighborList &>(my_contact->getContactSearch().getContactNeighborStructure(master).getNeighborList());
UInt nb_nodes_neigh = my_neighbor_list.impactor_nodes.getSize();
Vector<UInt> impact_nodes = my_neighbor_list.impactor_nodes;
UInt * impact_nodes_val = impact_nodes.values;
/// define output file for testing
std::ofstream test_output;
test_output.open("test_regular_grid_tetrahedron_4_nodes.out");
/// print impactor nodes
test_output << "we have " << nb_nodes_neigh << " impactor nodes:";
for (UInt i = 0; i < nb_nodes_neigh; ++i) {
test_output << " " << impact_nodes_val[i];
}
test_output << std::endl;
UInt * master_nodes_offset_val = my_neighbor_list.master_nodes_offset.values;
UInt * master_nodes_val = my_neighbor_list.master_nodes.values;
for (UInt i = 0; i < nb_nodes_neigh; ++i) {
test_output << " Impactor node: " << impact_nodes_val[i] << " has master nodes:";
for(UInt mn = master_nodes_offset_val[i]; mn < master_nodes_offset_val[i+1]; ++mn) {
test_output << " " << master_nodes_val[mn];
}
test_output << std::endl;
}
delete my_contact;
finalize();
return EXIT_SUCCESS;
}

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