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contact_search.cc
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/**
* @file contact_search.cc
*
* @author David Simon Kammer <david.kammer@epfl.ch>
* @author Leonardo Snozzi <leonardo.snozzi@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date Fri Oct 08 15:20:20 2010
*
* @brief implements the ContactSearch
*
* @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 "contact_search.hh"
#include "contact.hh"
#include "contact_neighbor_structure.hh"
#include "regular_grid_neighbor_structure.hh"
#include "grid_2d_neighbor_structure.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
PenetrationList::PenetrationList(const ID & id) :
id(id),
penetrating_nodes(Array<UInt>(0, 1, "penetrating_nodes")),
penetrated_facets_offset("penetrated_facets_offset", id),
penetrated_facets("penetrated_facets", id),
facets_normals("facets_normals", id),
gaps("gaps", id),
projected_positions("projected_positions", id) {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
PenetrationList::~PenetrationList() {
AKANTU_DEBUG_IN();
// for (UInt i = 0; i < _max_element_type; ++i) {
// if(penetrated_facets_offset[i]) delete penetrated_facets_offset[i];
// if(penetrated_facets [i]) delete penetrated_facets [i];
// if(facets_normals [i]) delete facets_normals [i];
// if(gaps [i]) delete gaps [i];
// if(projected_positions [i]) delete projected_positions [i];
// }
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
ContactSearch::ContactSearch(Contact & contact,
const ContactNeighborStructureType & neighbors_structure_type,
const ContactSearchType & type,
const ContactSearchID & id) :
id(id), contact(contact), neighbors_structure_type(neighbors_structure_type),
type(type) {
AKANTU_DEBUG_IN();
contact.setContactSearch(*this);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
ContactSearch::~ContactSearch() {
AKANTU_DEBUG_IN();
std::map<Surface, ContactNeighborStructure *>::iterator it;
for (it = neighbors_structure.begin(); it != neighbors_structure.end(); ++it) {
delete it->second;
}
neighbors_structure.clear();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactSearch::initSearch() {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactSearch::initNeighborStructure() {
AKANTU_DEBUG_IN();
std::map<Surface, ContactNeighborStructure *>::iterator it;
for (it = neighbors_structure.begin(); it != neighbors_structure.end(); ++it) {
it->second->initNeighborStructure();
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactSearch::initNeighborStructure(const Surface & master_surface) {
AKANTU_DEBUG_IN();
std::map<Surface, ContactNeighborStructure *>::iterator it;
for (it = neighbors_structure.begin(); it != neighbors_structure.end(); ++it) {
if(it->first == master_surface)
it->second->initNeighborStructure();
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactSearch::addMasterSurface(const Surface & master_surface) {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_ASSERT(neighbors_structure.find(master_surface) == neighbors_structure.end(),
"Master surface already registered in the search object " << id);
ContactNeighborStructure * tmp_neighbors_structure = NULL;
std::stringstream sstr;
sstr << id << ":contact_neighbor_structure:" << neighbors_structure_type << ":" << master_surface;
switch(neighbors_structure_type) {
case _cnst_regular_grid : {
Mesh & mesh = contact.getModel().getFEM().getMesh();
if (mesh.getSpatialDimension() == 2) {
tmp_neighbors_structure = new RegularGridNeighborStructure<2>(*this, master_surface, neighbors_structure_type, sstr.str());
}
else if(mesh.getSpatialDimension() == 3) {
tmp_neighbors_structure = new RegularGridNeighborStructure<3>(*this, master_surface, neighbors_structure_type, sstr.str());
}
else
AKANTU_DEBUG_ERROR("RegularGridNeighborStructure does not exist for dimension: "
<< mesh.getSpatialDimension());
break;
}
case _cnst_2d_grid : {
tmp_neighbors_structure = new Grid2dNeighborStructure(*this, master_surface, neighbors_structure_type, sstr.str());
break;
}
case _cnst_not_defined :
// tmp_neighbors_structure = new ContactNeighborStructureGrid2d(this, master_surface, sstr.str());
AKANTU_DEBUG_ERROR("Not a valid neighbors structure type : " << neighbors_structure_type);
break;
}
neighbors_structure[master_surface] = tmp_neighbors_structure;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactSearch::removeMasterSurface(const Surface & master_surface) {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_ASSERT(neighbors_structure.find(master_surface) != neighbors_structure.end(),
"Master surface not registered in the search object " << id);
delete neighbors_structure[master_surface];
neighbors_structure.erase(neighbors_structure.find(master_surface));
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactSearch::updateStructure(const Surface & master_surface) {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_ASSERT(neighbors_structure.find(master_surface) != neighbors_structure.end(),
"Master surface not registered in the search object " << id);
neighbors_structure[master_surface]->update();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
bool ContactSearch::checkIfUpdateStructureNeeded(const Surface & master_surface) {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_ASSERT(neighbors_structure.find(master_surface) != neighbors_structure.end(),
"Master surface not registered in the search object " << id);
bool check = neighbors_structure[master_surface]->check();
AKANTU_DEBUG_OUT();
return check;
}
/* -------------------------------------------------------------------------- */
const ContactNeighborStructure & ContactSearch::getContactNeighborStructure(const Surface & master_surface) const {
AKANTU_DEBUG_IN();
std::map<Surface, ContactNeighborStructure *>::const_iterator it = neighbors_structure.find(master_surface);
AKANTU_DEBUG_ASSERT(it != neighbors_structure.end(), "Master surface not registred in contact search.");
AKANTU_DEBUG_OUT();
return *(it->second);
}
/* -------------------------------------------------------------------------- */
void ContactSearch::computeMaxIncrement(Real * max_increment) {
AKANTU_DEBUG_IN();
UInt spatial_dimension = contact.getModel().getFEM().getMesh().getSpatialDimension();
UInt nb_surfaces = contact.getModel().getFEM().getMesh().getNbSurfaces();
Real * current_increment = contact.getModel().getIncrement().storage();
/// initialize max table with zeros
for(UInt dim = 0; dim < spatial_dimension; ++dim)
max_increment[dim] = 0.0;
// get the nodes that are on the surfaces
UInt * surface_to_nodes_offset = contact.getSurfaceToNodesOffset().storage();
UInt * surface_to_nodes = contact.getSurfaceToNodes().storage();
/// find maximal increment of surface nodes in all directions
for(UInt surf = 0; surf < nb_surfaces; ++surf) {
UInt min_surf_offset = surface_to_nodes_offset[surf];
UInt max_surf_offset = surface_to_nodes_offset[surf + 1];
for(UInt n = min_surf_offset; n < max_surf_offset; ++n) {
UInt cur_node = surface_to_nodes[n];
for(UInt dim = 0; dim < spatial_dimension; ++dim) {
Real cur_increment = current_increment[cur_node * spatial_dimension + dim];
max_increment[dim] = std::max(max_increment[dim], fabs(cur_increment));
}
}
}
AKANTU_DEBUG_OUT();
}
__END_AKANTU__

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