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rAKA/src/model/contact_mechanics/contact_mechanics_model.cc
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contact_mechanics_model.cc
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/**
* @file coontact_mechanics_model.cc
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Tue May 08 2012
* @date last modification: Wed Feb 21 2018
*
* @brief Contact mechanics model
*
* @section LICENSE
*
* Copyright (©) 2010-2018 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_mechanics_model.hh"
#include "integrator_gauss.hh"
#include "shape_lagrange.hh"
/* -------------------------------------------------------------------------- */
#include <algorithm>
/* -------------------------------------------------------------------------- */
namespace akantu {
ContactMechanicsModel::ContactMechanicsModel( Mesh & mesh, UInt dim, const ID & id,
const MemoryID & memory_id,
const ModelType model_type)
: Model(mesh, model_type, dim, id, memory_id) {
AKANTU_DEBUG_IN();
this->registerFEEngineObject<MyFEEngineType>("ContactMechanicsModel", mesh,
Model::spatial_dimension);
this->initDOFManager();
this->detector = std::make_unique<ContactDetector>(this->mesh, id + ":contact_detector");
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
ContactMechanicsModel::~ContactMechanicsModel() {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::initFullImpl(const ModelOptions & options) {
Model::initFullImpl(options);
// initalize the resolutions
if (this->parser.getLastParsedFile() != "") {
this->instantiateResolutions();
}
this->initResolutions();
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::instantiateResolutions() {
ParserSection model_section;
bool is_empty;
std::tie(model_section, is_empty) = this->getParserSection();
if (not is_empty) {
auto model_resolutions = model_section.getSubSections(ParserType::_contact_resolution);
for (const auto & section : model_resolutions) {
this->registerNewResolution(section);
}
}
auto sub_sections = this->parser.getSubSections(ParserType::_contact_resolution);
for (const auto & section : sub_sections) {
this->registerNewResolution(section);
}
if (resolutions.empty())
AKANTU_EXCEPTION("No contact resolutions where instantiated for the model"
<< getID());
}
/* -------------------------------------------------------------------------- */
Resolution &
ContactMechanicsModel::registerNewResolution(const ParserSection & section) {
std::string res_name;
std::string res_type = section.getName();
std::string opt_param = section.getOption();
try {
std::string tmp = section.getParameter("name");
res_name = tmp; /** this can seem weird, but there is an ambiguous operator
* overload that i couldn't solve. @todo remove the
* weirdness of this code
*/
} catch (debug::Exception &) {
AKANTU_ERROR("A contact resolution of type \'"
<< res_type
<< "\' in the input file has been defined without a name!");
}
Resolution & res = this->registerNewResolution(res_name, res_type, opt_param);
res.parseSection(section);
return res;
}
/* -------------------------------------------------------------------------- */
Resolution & ContactMechanicsModel::registerNewResolution(const ID & res_name,
const ID & res_type,
const ID & opt_param) {
AKANTU_DEBUG_ASSERT(resolutions_names_to_id.find(res_name) ==
resolutions_names_to_id.end(),
"A resolution with this name '"
<< res_name << "' has already been registered. "
<< "Please use unique names for resolutions");
UInt res_count = resolutions.size();
resolutions_names_to_id[res_name] = res_count;
std::stringstream sstr_res;
sstr_res << this->id << ":" << res_count << ":" << res_type;
ID res_id = sstr_res.str();
std::unique_ptr<Resolution> resolution = ResolutionFactory::getInstance().allocate(
res_type, spatial_dimension, opt_param, *this, res_id);
resolutions.push_back(std::move(resolution));
return *(resolutions.back());
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::initResolutions() {
AKANTU_DEBUG_ASSERT(resolutions.size() != 0, "No resolutions to initialize !");
if (!are_resolutions_instantiated)
instantiateResolutions();
// \TODO check if each resolution needs a initResolution() method
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::initModel() {
getFEEngine().initShapeFunctions(_not_ghost);
getFEEngine().initShapeFunctions(_ghost);
}
/* -------------------------------------------------------------------------- */
FEEngine & ContactMechanicsModel::getFEEngineBoundary(const ID & name) {
return dynamic_cast<FEEngine &>(
getFEEngineClassBoundary<MyFEEngineType>(name));
}
/* -------------------------------------------------------------------------- */
std::tuple<ID, TimeStepSolverType>
ContactMechanicsModel::getDefaultSolverID(const AnalysisMethod & method) {
/* @todo contact mechanics model doesnt really needs a solver have
to find a way to fix this absurd part
*/
return std::make_tuple("contact", _tsst_static);
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::assembleResidual() {
AKANTU_DEBUG_IN();
/* ------------------------------------------------------------------------ */
// computes the internal forces
this->assembleInternalForces();
/* ------------------------------------------------------------------------ */
this->getDOFManager().assembleToResidual("displacement",
*this->contact_force, 1);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::assembleInternalForces() {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_INFO("Assemble the contact forces");
// assemble the forces due to local stresses
AKANTU_DEBUG_INFO("Assemble residual for local elements");
for (auto & resolution : resolutions) {
resolution->assembleInternalForces(_not_ghost);
}
// assemble the stresses due to ghost elements
AKANTU_DEBUG_INFO("Assemble residual for ghost elements");
for (auto & resolution : resolutions) {
resolution->assembleInternalForces(_ghost);
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::printself(std::ostream & stream, int indent) const {
std::string space;
for (Int i = 0; i < indent; i++, space += AKANTU_INDENT)
;
stream << space << "Contact Mechanics Model [" << std::endl;
stream << space << " + id : " << id << std::endl;
stream << space << " + spatial dimension : " << Model::spatial_dimension
<< std::endl;
stream << space << " + fem [" << std::endl;
getFEEngine().printself(stream, indent + 2);
stream << space << AKANTU_INDENT << "]" << std::endl;
stream << space << " + resolutions [" << std::endl;
for (auto & resolution : resolutions) {
resolution->printself(stream, indent + 1);
}
stream << space << AKANTU_INDENT << "]" << std::endl;
stream << space << "]" << std::endl;
}
/* -------------------------------------------------------------------------- */
MatrixType ContactMechanicsModel::getMatrixType(const ID & matrix_id) {
// \TODO correct it for contact mechanics model, only one type of matrix
if (matrix_id == "C")
return _mt_not_defined;
return _symmetric;
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::assembleMatrix(const ID & matrix_id) {
AKANTU_TO_IMPLEMENT();
}
/* -------------------------------------------------------------------------- */
void ContactMechanicsModel::assembleLumpedMatrix(const ID & matrix_id) {
AKANTU_TO_IMPLEMENT();
}
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