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coupler_solid_contact.cc
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coupler_solid_contact.cc
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/**
* @file coupler_solid_contact_explicit.cc
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Thu Jan 17 2019
* @date last modification: Thu Jan 17 2019
*
* @brief class for coupling of solid mechanics and conatct mechanics
* model in explicit
*
* @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 "coupler_solid_contact.hh"
#include "dumpable_inline_impl.hh"
#include "integrator_gauss.hh"
#include "shape_lagrange.hh"
#ifdef AKANTU_USE_IOHELPER
#include "dumper_iohelper_paraview.hh"
#endif
/* -------------------------------------------------------------------------- */
namespace akantu {
CouplerSolidContact::CouplerSolidContact(Mesh & mesh, UInt dim, const ID & id,
std::shared_ptr<DOFManager> dof_manager,
const ModelType model_type)
: Model(mesh, model_type, dof_manager, dim, id) {
AKANTU_DEBUG_IN();
this->registerFEEngineObject<MyFEEngineType>(
"CouplerSolidContact", mesh, Model::spatial_dimension);
#if defined(AKANTU_USE_IOHELPER)
this->mesh.registerDumper<DumperParaview>("coupler_solid_contact", id, true);
this->mesh.addDumpMeshToDumper("coupler_solid_contact", mesh,
Model::spatial_dimension, _not_ghost,
_ek_regular);
#endif
this->registerDataAccessor(*this);
solid = new SolidMechanicsModel(mesh, Model::spatial_dimension,
"solid_mechanics_model",
0,
this->dof_manager);
contact = new ContactMechanicsModel(mesh, Model::spatial_dimension,
"contact_mechanics_model",
0,
this->dof_manager);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
CouplerSolidContact::~CouplerSolidContact() {}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::initFullImpl(const ModelOptions & options) {
Model::initFullImpl(options);
this->initBC(*this, *displacement, *displacement_increment, *external_force);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::initModel() {
getFEEngine().initShapeFunctions(_not_ghost);
getFEEngine().initShapeFunctions(_ghost);
}
/* -------------------------------------------------------------------------- */
FEEngine & CouplerSolidContact::getFEEngineBoundary(const ID & name) {
return dynamic_cast<FEEngine &>(
getFEEngineClassBoundary<MyFEEngineType>(name));
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::initSolver(TimeStepSolverType, NonLinearSolverType) {
DOFManager & dof_manager = this->getDOFManager();
/*this->allocNodalField(this->displacement, spatial_dimension, "displacement");
this->allocNodalField(this->displacement_increment, spatial_dimension,
"displacement_increment");
this->allocNodalField(this->external_force, spatial_dimension,
"external_force");
if (not dof_manager.hasDOFs("displacement")) {
dof_manager.registerDOFs("displacement", *this->displacement, _dst_nodal);
}*/
}
/* -------------------------------------------------------------------------- */
std::tuple<ID, TimeStepSolverType>
CouplerSolidContact::getDefaultSolverID(const AnalysisMethod & method) {
switch (method) {
case _explicit_contact: {
return std::make_tuple("explicit_contact", _tsst_dynamic);
}
case _implicit_contact: {
return std::make_tuple("implicit_contact", _tsst_static);
}
default:
return std::make_tuple("unkown", _tsst_not_defined);
}
}
/* -------------------------------------------------------------------------- */
ModelSolverOptions CouplerSolidContact::getDefaultSolverOptions(
const TimeStepSolverType & type) const {
ModelSolverOptions options;
switch (type) {
case _tsst_dynamic: {
options.non_linear_solver_type = _nls_newton_raphson;
options.integration_scheme_type["displacement"] = _ist_pseudo_time;
options.solution_type["displacement"] = IntegrationScheme::_not_defined;
break;
}
case _tsst_static: {
options.non_linear_solver_type = _nls_newton_raphson;
options.integration_scheme_type["displacement"] = _ist_pseudo_time;
options.solution_type["displacement"] = IntegrationScheme::_not_defined;
break;
}
default:
AKANTU_EXCEPTION(type << " is not a valid time step solver type");
break;
}
return options;
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::assembleResidual() {
solid->assembleInternalForces();
contact->assembleInternalForces();
auto & contact_force = contact->getInternalForce();
auto & external_force = solid->getExternalForce();
auto & internal_force = solid->getInternalForce();
/*auto & blocked_dofs = solid->getBlockedDOFs();
for (auto && values : zip(make_view(external_force),
make_view(contact_force),
make_view(blocked_dofs))) {
auto & f_ext = std::get<0>(values);
auto & f_con = std::get<1>(values);
auto & blocked = std::get<2>(values);
if (!blocked)
f_ext = f_con;
}*/
/* ------------------------------------------------------------------------ */
this->getDOFManager().assembleToResidual("displacement",
external_force, 1);
this->getDOFManager().assembleToResidual("displacement",
internal_force, 1);
this->getDOFManager().assembleToResidual("displacement",
contact_force, 1);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::beforeSolveStep() {
contact->search();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::afterSolveStep() {}
/* -------------------------------------------------------------------------- */
MatrixType CouplerSolidContact::getMatrixType(const ID & matrix_id) {
if (matrix_id == "K")
return _symmetric;
return _mt_not_defined;
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::assembleMatrix(const ID & matrix_id) {
if (matrix_id == "K") {
solid->assembleStiffnessMatrix();
contact->assembleStiffnessMatrix();
}
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::assembleLumpedMatrix(const ID & /*matrix_id*/) {
AKANTU_TO_IMPLEMENT();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::coupleExternalForces() {
auto & contact_force = contact->getInternalForce();
auto & external_force = solid->getExternalForce();
auto & blocked_dofs = solid->getBlockedDOFs();
for (auto && values : zip(make_view(external_force), make_view(contact_force),
make_view(blocked_dofs))) {
auto & f_ext = std::get<0>(values);
auto & f_con = std::get<1>(values);
auto & blocked = std::get<2>(values);
if (!blocked)
f_ext = f_con;
}
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::coupleStiffnessMatrices() {
auto & contact_stiffness =
const_cast<SparseMatrix &>(contact->getDOFManager().getMatrix("K"));
auto & solid_stiffness =
const_cast<SparseMatrix &>(solid->getDOFManager().getMatrix("K"));
solid_stiffness.add(contact_stiffness);
}
/* -------------------------------------------------------------------------- */
// void CouplerSolidContact::solve() {
// search for contacts
// contact.search();
// can be handled by beforeSolveStep()
/// assemble contact forces
/// contact.assembleInternalForces();
/// assemble contact stiffness matrix
/// contact.assembleStiffnessMatrix();
/// can be handled by solveStep but no need to solve it
/// couple the external forces
// this->coupleExternalForces();
// assemble the internal forces solid mechanics model
// assemble the stiffness forces
// couple the contact mechanics model stiffness to solid mechanics
// this->coupleStiffnessMatrices();
// and solve the solid mechanics model with new stifffness anf
// residual
/// all the above steps for solid mehcanics should be handled by the
// solveStep method with solvercall back to see that stifffness
// matrices are coupled
// ContactSolver callback(solid, contact);
// contact.solveStep();
// solid.solveStep(callback);
//}
/* -------------------------------------------------------------------------- */
#ifdef AKANTU_USE_IOHELPER
/* -------------------------------------------------------------------------- */
dumper::Field * CouplerSolidContact::createElementalField(
const std::string & field_name, const std::string & group_name,
bool padding_flag, const UInt & spatial_dimension,
const ElementKind & kind) {
dumper::Field * field = nullptr;
field = solid->createElementalField(field_name, group_name, padding_flag,
spatial_dimension, kind);
return field;
}
/* -------------------------------------------------------------------------- */
dumper::Field *
CouplerSolidContact::createNodalFieldReal(const std::string & field_name,
const std::string & group_name,
bool padding_flag) {
dumper::Field * field = nullptr;
field = solid->createNodalFieldReal(field_name, group_name, padding_flag);
return field;
}
/* -------------------------------------------------------------------------- */
dumper::Field * CouplerSolidContact::createNodalFieldBool(
const std::string & field_name, const std::string & group_name,
__attribute__((unused)) bool padding_flag) {
dumper::Field * field = nullptr;
field = solid->createNodalFieldBool(field_name, group_name, padding_flag);
return field;
}
#else
/* -------------------------------------------------------------------------- */
dumper::Field * CouplerSolidContact::createElementalField(const std::string &,
const std::string &,
bool, const UInt &,
const ElementKind &) {
return nullptr;
}
/* ----------------------------------------------------------------------- */
dumper::Field * CouplerSolidContact::createNodalFieldReal(const std::string &,
const std::string &,
bool) {
return nullptr;
}
/*-------------------------------------------------------------------*/
dumper::Field * CouplerSolidContact::createNodalFieldBool(const std::string &,
const std::string &,
bool) {
return nullptr;
}
#endif
/* -------------------------------------------------------------------------- */
UInt CouplerSolidContact::getNbData(
const Array<Element> & elements, const SynchronizationTag & /*tag*/) const {
AKANTU_DEBUG_IN();
UInt size = 0;
UInt nb_nodes_per_element = 0;
for (const Element & el : elements) {
nb_nodes_per_element += Mesh::getNbNodesPerElement(el.type);
}
AKANTU_DEBUG_OUT();
return size;
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::packData(CommunicationBuffer & /*buffer*/,
const Array<Element> & /*elements*/,
const SynchronizationTag & /*tag*/) const {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::unpackData(CommunicationBuffer & /*buffer*/,
const Array<Element> & /*elements*/,
const SynchronizationTag & /*tag*/) {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
UInt CouplerSolidContact::getNbData(
const Array<UInt> & dofs, const SynchronizationTag & /*tag*/) const {
AKANTU_DEBUG_IN();
UInt size = 0;
// UInt nb_nodes = mesh.getNbNodes();
AKANTU_DEBUG_OUT();
return size * dofs.size();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::packData(CommunicationBuffer & /*buffer*/,
const Array<UInt> & /*dofs*/,
const SynchronizationTag & /*tag*/) const {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidContact::unpackData(CommunicationBuffer & /*buffer*/,
const Array<UInt> & /*dofs*/,
const SynchronizationTag & /*tag*/) {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_OUT();
}
} // namespace akantu

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