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test_contact_2d_neighbor_structure.cc
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Thu, Aug 22, 01:08
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Sat, Aug 24, 01:08 (1 d, 23 h)
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rAKA akantu
test_contact_2d_neighbor_structure.cc
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/**
* @file test_contact_2d_neighbor_structure.cc
* @author Leonardo Snozzi <leonardo.snozzi@epfl.ch>
* @date Thu Dec 9 10:07:58 2010
*
* @brief Test neighbor structure for 2d with linear triangles
*
* @section LICENSE
*
* <insert license here>
*
*/
/* -------------------------------------------------------------------------- */
#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_neighbor_structure.hh"
using namespace akantu;
#ifdef AKANTU_USE_IOHELPER
# include "io_helper.h"
static void initParaview(Mesh & mesh);
static void initParaviewSurface(Mesh & mesh);
static void printParaviewSurface(Mesh & mesh, const NeighborList & my_neighbor_list);
double * facet_id;
double * node_id;
DumperParaview dumper_surface;
#endif //AKANTU_USE_IOHELPER
int main(int argc, char *argv[])
{
int spatial_dimension = 2;
Real time_factor = 0.2;
/// load mesh
Mesh mesh(spatial_dimension);
MeshIOMSH mesh_io;
mesh_io.read("squares.msh", mesh);
SolidMechanicsModel * model = new SolidMechanicsModel(mesh);
UInt nb_nodes = model->getFEM().getMesh().getNbNodes();
UInt nb_elements = model->getFEM().getMesh().getNbElement(_triangle_3);
/// model initialization
model->initVectors();
model->readMaterials("materials.dat");
model->initMaterials();
model->initModel();
std::cout << model->getMaterial(0) << std::endl;
model->assembleMassLumped();
/// set vectors to zero
memset(model->getForce().values, 0,
spatial_dimension*nb_nodes*sizeof(Real));
memset(model->getVelocity().values, 0,
spatial_dimension*nb_nodes*sizeof(Real));
memset(model->getAcceleration().values, 0,
spatial_dimension*nb_nodes*sizeof(Real));
memset(model->getDisplacement().values, 0,
spatial_dimension*nb_nodes*sizeof(Real));
memset(model->getResidual().values, 0,
spatial_dimension*nb_nodes*sizeof(Real));
memset(model->getMaterial(0).getStrain(_triangle_3).values, 0,
spatial_dimension*spatial_dimension*nb_elements*sizeof(Real));
memset(model->getMaterial(0).getStress(_triangle_3).values, 0,
spatial_dimension*spatial_dimension*nb_elements*sizeof(Real));
/// Paraview Helper
#ifdef AKANTU_USE_IOHELPER
// initParaview(*model);
#endif //AKANTU_USE_IOHELPER
// /// dump surface information to paraview
// #ifdef AKANTU_USE_IOHELPER
// DumperParaview dumper;
// dumper.SetMode(TEXT);
// dumper.SetPoints(mesh.getNodes().values, spatial_dimension, nb_nodes, "triangle_3_test-surface-extraction");
// dumper.SetConnectivity((int*)mesh.getConnectivity(_triangle_3).values,
// TRIANGLE1, mesh.getNbElement(_triangle_3), C_MODE);
// dumper.SetPrefix("paraview/");
// dumper.Init();
// dumper.Dump();
// #endif //AKANTU_USE_IOHELPER
Real time_step = model->getStableTimeStep() * time_factor;
std::cout << "Time Step = " << time_step << "s" << std::endl;
model->setTimeStep(time_step);
/// contact declaration
Contact * my_contact = Contact::newContact(*model,
_ct_2d_expli,
_cst_2d_expli,
_cnst_2d_grid);
my_contact->initContact(true);
my_contact->setFrictionCoefficient(0.);
my_contact->initNeighborStructure();
/// get master surfaces with associated neighbor list
const std::vector<Surface> & master_surfaces = my_contact->getMasterSurfaces();
std::vector<Surface>::iterator it;
// for (it = master_surfaces.begin(); it != master_surfaces.end(); ++it) {
#ifdef AKANTU_USE_IOHELPER
initParaview(mesh);
initParaviewSurface(mesh);
#endif //AKANTU_USE_IOHELPER
UInt nb_surfaces = mesh.getNbSurfaces();
for (UInt s = 0; s < nb_surfaces; ++s) {
const NeighborList & my_neighbor_list = my_contact->getContactSearch().getContactNeighborStructure(s).getNeighborList();
#ifdef AKANTU_USE_IOHELPER
printParaviewSurface(mesh, my_neighbor_list);
#endif //AKANTU_USE_IOHELPER
UInt nb_impactors = my_neighbor_list.impactor_nodes.getSize();
UInt * impactors_val = my_neighbor_list.impactor_nodes.values;
UInt * node_facet_off_val = my_neighbor_list.facets_offset[_segment_2]->values;
UInt * node_facet_val = my_neighbor_list.facets[_segment_2]->values;
/// print impactor nodes
std::cout << "Master surface " << s << " has " << nb_impactors << " impactor nodes:" << std::endl;
for (UInt i = 0; i < nb_impactors; ++i) {
std::cout << " node " << impactors_val[i] << " : ";
for (UInt j = node_facet_off_val[i]; j < node_facet_off_val[i+1]; ++j)
std::cout << node_facet_val[j] << " ";
std::cout << std::endl;
}
std::cout << std::endl;
}
// }
#ifdef AKANTU_USE_IOHELPER
delete [] node_id;
delete [] facet_id;
#endif //AKANTU_USE_IOHELPER
delete my_contact;
delete model;
finalize();
return EXIT_SUCCESS;
}
/// Paraview prints
#ifdef AKANTU_USE_IOHELPER
static void initParaview(Mesh & mesh) {
DumperParaview dumper;
dumper.SetMode(TEXT);
UInt nb_nodes = mesh.getNbNodes();
dumper.SetPoints(mesh.getNodes().values, 2, nb_nodes, "test-2d-neighbor");
dumper.SetConnectivity((int*)mesh.getConnectivity(_triangle_3).values,
TRIANGLE1, mesh.getNbElement(_triangle_3), C_MODE);
dumper.SetPrefix("paraview/");
dumper.Init();
dumper.Dump();
}
static void initParaviewSurface(Mesh & mesh) {
//DumperParaview dumper_surface;
dumper_surface.SetMode(TEXT);
UInt nb_nodes = mesh.getNbNodes();
dumper_surface.SetPoints(mesh.getNodes().values, 2, nb_nodes, "test-2d-neighbor-surface");
dumper_surface.SetConnectivity((int *)mesh.getConnectivity(_segment_2).values,
LINE1, mesh.getNbElement(_segment_2), C_MODE);
facet_id = new double [mesh.getConnectivity(_segment_2).getSize()];
memset(facet_id, 0, mesh.getConnectivity(_segment_2).getSize()*sizeof(double));
node_id = new double [nb_nodes];
memset(node_id, 0, nb_nodes*sizeof(double));
dumper_surface.AddElemDataField(facet_id, 1, "master_segments");
dumper_surface.AddNodeDataField(node_id, 1, "slave_nodes");
dumper_surface.SetPrefix("paraview/");
dumper_surface.Init();
dumper_surface.Dump();
// delete [] facet_id;
// delete [] node_id;
// return dumper_surface;
}
static void printParaviewSurface(Mesh & mesh, const NeighborList & my_neighbor_list) {
UInt nb_impactors = my_neighbor_list.impactor_nodes.getSize();
UInt * impactors_val = my_neighbor_list.impactor_nodes.values;
UInt nb_facets = my_neighbor_list.facets[_segment_2]->getSize();
UInt * node_facet_val = my_neighbor_list.facets[_segment_2]->values;
// double * node_id = new double [mesh.getNbNodes()];
memset(node_id, 0, mesh.getNbNodes()*sizeof(double));
// double * facet_id = new double [mesh.getConnectivity(_segment_2).getSize()];
memset(facet_id, 0, mesh.getConnectivity(_segment_2).getSize()*sizeof(double));
for (UInt n = 0; n < nb_impactors; ++n)
node_id[impactors_val[n]] = 1.;
for (UInt el = 0; el < nb_facets; ++el)
facet_id[node_facet_val[el]] = 1.;
dumper_surface.Dump();
}
#endif //AKANTU_USE_IOHELPER
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