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phase_field_model.cc
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phase_field_model.cc
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/**
* Copyright (©) 2018-2023 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This file is part of Akantu
*
* 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 "phase_field_model.hh"
#include "dumpable_inline_impl.hh"
#include "element_synchronizer.hh"
#include "fe_engine_template.hh"
#include "group_manager_inline_impl.hh"
#include "integrator_gauss.hh"
#include "shape_lagrange.hh"
/* -------------------------------------------------------------------------- */
#include "dumper_element_partition.hh"
#include "dumper_elemental_field.hh"
#include "dumper_internal_material_field.hh"
#include "dumper_iohelper_paraview.hh"
#include <utility>
/* -------------------------------------------------------------------------- */
namespace akantu {
/* -------------------------------------------------------------------------- */
PhaseFieldModel::PhaseFieldModel(Mesh & mesh, Int dim, const ID & id,
std::shared_ptr<DOFManager> dof_manager,
ModelType model_type)
: Parent(mesh, model_type, dim, id) {
AKANTU_DEBUG_IN();
this->initDOFManager(std::move(dof_manager));
this->registerFEEngineObject<FEEngineType>("PhaseFieldFEEngine", mesh,
Model::spatial_dimension);
this->mesh.registerDumper<DumperParaview>("phase_field", id, true);
this->mesh.addDumpMesh(mesh, Model::spatial_dimension, _not_ghost,
_ek_regular);
if (this->mesh.isDistributed()) {
auto & synchronizer = this->mesh.getElementSynchronizer();
this->registerSynchronizer(synchronizer, SynchronizationTag::_pfm_damage);
this->registerSynchronizer(synchronizer, SynchronizationTag::_for_dump);
}
this->parser_type = ParserType::_phasefield;
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
MatrixType PhaseFieldModel::getMatrixType(const ID & matrix_id) const {
if (matrix_id == "K") {
return _symmetric;
}
return _mt_not_defined;
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::initFullImpl(const ModelOptions & options) {
Parent::initFullImpl(options);
this->initBC(*this, *damage, *external_force);
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::assembleMatrix(const ID & matrix_id) {
if (matrix_id == "K") {
this->assembleStiffnessMatrix();
} else {
AKANTU_ERROR("Unknown Matrix ID for PhaseFieldModel : " << matrix_id);
}
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::predictor() {
// AKANTU_TO_IMPLEMENT();
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::corrector() {
// AKANTU_TO_IMPLEMENT();
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::initSolver(TimeStepSolverType time_step_solver_type,
NonLinearSolverType /*unused*/) {
DOFManager & dof_manager = this->getDOFManager();
this->allocNodalField(this->damage, 1, "damage");
this->allocNodalField(this->external_force, 1, "external_force");
this->allocNodalField(this->internal_force, 1, "internal_force");
this->allocNodalField(this->blocked_dofs, 1, "blocked_dofs");
this->allocNodalField(this->previous_damage, 1, "previous_damage");
if (!dof_manager.hasDOFs("damage")) {
dof_manager.registerDOFs("damage", *this->damage, _dst_nodal);
dof_manager.registerBlockedDOFs("damage", *this->blocked_dofs);
dof_manager.registerDOFsPrevious("damage", *this->previous_damage);
}
if (time_step_solver_type == TimeStepSolverType::_dynamic) {
AKANTU_TO_IMPLEMENT();
}
}
/* -------------------------------------------------------------------------- */
FEEngine & PhaseFieldModel::getFEEngineBoundary(const ID & name) {
return dynamic_cast<FEEngine &>(getFEEngineClassBoundary<FEEngineType>(name));
}
/* -------------------------------------------------------------------------- */
TimeStepSolverType PhaseFieldModel::getDefaultSolverType() const {
return TimeStepSolverType::_static;
}
/* -------------------------------------------------------------------------- */
std::tuple<ID, TimeStepSolverType>
PhaseFieldModel::getDefaultSolverID(const AnalysisMethod & method) {
switch (method) {
case _explicit_lumped_mass: {
return std::make_tuple("explicit_lumped",
TimeStepSolverType::_dynamic_lumped);
}
case _explicit_consistent_mass: {
return std::make_tuple("explicit", TimeStepSolverType::_dynamic);
}
case _static: {
return std::make_tuple("static", TimeStepSolverType::_static);
}
case _implicit_dynamic: {
return std::make_tuple("implicit", TimeStepSolverType::_dynamic);
}
default:
return std::make_tuple("unknown", TimeStepSolverType::_not_defined);
}
}
/* -------------------------------------------------------------------------- */
ModelSolverOptions PhaseFieldModel::getDefaultSolverOptions(
const TimeStepSolverType & type) const {
ModelSolverOptions options;
switch (type) {
case TimeStepSolverType::_dynamic_lumped: {
options.non_linear_solver_type = NonLinearSolverType::_lumped;
options.integration_scheme_type["damage"] =
IntegrationSchemeType::_central_difference;
options.solution_type["damage"] = IntegrationScheme::_acceleration;
break;
}
case TimeStepSolverType::_static: {
options.non_linear_solver_type = NonLinearSolverType::_newton_raphson;
options.integration_scheme_type["damage"] =
IntegrationSchemeType::_pseudo_time;
options.solution_type["damage"] = IntegrationScheme::_not_defined;
break;
}
case TimeStepSolverType::_dynamic: {
options.non_linear_solver_type = NonLinearSolverType::_newton_raphson;
options.integration_scheme_type["damage"] =
IntegrationSchemeType::_backward_euler;
options.solution_type["damage"] = IntegrationScheme::_damage;
break;
}
default:
AKANTU_EXCEPTION(type << " is not a valid time step solver type");
}
return options;
}
/* -------------------------------------------------------------------------- */
Real PhaseFieldModel::getEnergy(const ID & energy_id) {
AKANTU_DEBUG_IN();
Real energy = 0.;
for_each_constitutive_law([&energy, &energy_id](auto && phase_field) {
energy += phase_field.getEnergy(energy_id);
});
/// reduction sum over all processors
mesh.getCommunicator().allReduce(energy, SynchronizerOperation::_sum);
AKANTU_DEBUG_OUT();
return energy;
}
/* -------------------------------------------------------------------------- */
Real PhaseFieldModel::getEnergy(const ID & energy_id, const Element & element) {
auto pf_element = element;
auto phase_index = this->getConstitutiveLawByElement()(element);
pf_element.element = this->getConstitutiveLawLocalNumbering()(element);
Real energy =
this->getConstitutiveLaw(phase_index).getEnergy(energy_id, pf_element);
return energy;
}
/* -------------------------------------------------------------------------- */
Real PhaseFieldModel::getEnergy(const ID & energy_id, const ID & group_id) {
auto && group = mesh.getElementGroup(group_id);
auto energy = 0.;
for (auto && type : group.elementTypes()) {
for (auto el : group.getElementsIterable(type)) {
energy += this->getEnergy(energy_id, el);
}
}
/// reduction sum over all processors
mesh.getCommunicator().allReduce(energy, SynchronizerOperation::_sum);
return energy;
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::beforeSolveStep() {
for_each_constitutive_law(
[](auto && phasefield) { phasefield.beforeSolveStep(); });
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::afterSolveStep(bool converged) {
if (not converged) {
return;
}
for (auto && values : zip(*damage, *previous_damage)) {
auto & dam = std::get<0>(values);
auto & prev_dam = std::get<1>(values);
prev_dam = dam;
}
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::assembleStiffnessMatrix() {
AKANTU_DEBUG_INFO("Assemble the new stiffness matrix");
if (!this->getDOFManager().hasMatrix("K")) {
this->getDOFManager().getNewMatrix("K", getMatrixType("K"));
}
this->getDOFManager().zeroMatrix("K");
for_each_constitutive_law([](auto && phasefield) {
phasefield.assembleStiffnessMatrix(_not_ghost);
});
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::assembleResidual() {
this->assembleInternalForces();
this->getDOFManager().assembleToResidual("damage", *this->external_force, 1);
this->getDOFManager().assembleToResidual("damage", *this->internal_force, 1);
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::assembleInternalForces() {
AKANTU_DEBUG_INFO("Assemble the internal forces");
this->internal_force->zero();
this->synchronize(SynchronizationTag::_pfm_damage);
for_each_constitutive_law([](auto && phasefield) {
phasefield.computeAllDrivingForces(_not_ghost);
});
// assemble the forces due to local driving forces
AKANTU_DEBUG_INFO("Assemble residual for local elements");
for_each_constitutive_law([](auto && phasefield) {
phasefield.assembleInternalForces(_not_ghost);
});
// assemble the forces due to local driving forces
AKANTU_DEBUG_INFO("Assemble residual for ghost elements");
for_each_constitutive_law(
[](auto && phasefield) { phasefield.assembleInternalForces(_ghost); });
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::assembleLumpedMatrix(const ID & /*matrix_id*/) {}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::setTimeStep(Real time_step, const ID & solver_id) {
Model::setTimeStep(time_step, solver_id);
this->mesh.getDumper("phase_field").setTimeStep(time_step);
}
/* -------------------------------------------------------------------------- */
Int PhaseFieldModel::getNbData(const Array<Element> & elements,
const SynchronizationTag & tag) const {
Int size = Parent::getNbData(elements, tag);
Int nb_nodes_per_element = 0;
for (const Element & el : elements) {
nb_nodes_per_element += Mesh::getNbNodesPerElement(el.type);
}
switch (tag) {
case SynchronizationTag::_for_dump: {
// damage
size += nb_nodes_per_element * sizeof(Real);
break;
}
case SynchronizationTag::_pfm_damage: {
size += nb_nodes_per_element * sizeof(Real);
break;
}
default: {
AKANTU_ERROR("Unknown ghost synchronization tag : " << tag);
}
}
return size;
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::packData(CommunicationBuffer & buffer,
const Array<Element> & elements,
const SynchronizationTag & tag) const {
Parent::packData(buffer, elements, tag);
switch (tag) {
case SynchronizationTag::_for_dump: {
packNodalDataHelper(*damage, buffer, elements, mesh);
break;
}
case SynchronizationTag::_pfm_damage: {
packNodalDataHelper(*damage, buffer, elements, mesh);
break;
}
default: {
AKANTU_ERROR("Unknown ghost synchronization tag : " << tag);
}
}
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::unpackData(CommunicationBuffer & buffer,
const Array<Element> & elements,
const SynchronizationTag & tag) {
Parent::unpackData(buffer, elements, tag);
switch (tag) {
case SynchronizationTag::_for_dump: {
unpackNodalDataHelper(*damage, buffer, elements, mesh);
break;
}
case SynchronizationTag::_pfm_damage: {
unpackNodalDataHelper(*damage, buffer, elements, mesh);
break;
}
default: {
AKANTU_ERROR("Unknown ghost synchronization tag : " << tag);
}
}
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
Int PhaseFieldModel::getNbData(const Array<Idx> & indexes,
const SynchronizationTag & tag) const {
Int size = 0;
Int nb_nodes = indexes.size();
switch (tag) {
case SynchronizationTag::_for_dump: {
size += nb_nodes * sizeof(Real);
break;
}
case SynchronizationTag::_pfm_damage: {
size += nb_nodes * sizeof(Real);
break;
}
default: {
AKANTU_ERROR("Unknown ghost synchronization tag : " << tag);
}
}
return size;
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::packData(CommunicationBuffer & buffer,
const Array<Idx> & indexes,
const SynchronizationTag & tag) const {
switch (tag) {
case SynchronizationTag::_for_dump: {
packDOFDataHelper(*damage, buffer, indexes);
break;
}
case SynchronizationTag::_pfm_damage: {
packDOFDataHelper(*damage, buffer, indexes);
break;
}
default: {
AKANTU_ERROR("Unknown ghost synchronization tag : " << tag);
}
}
}
/* -------------------------------------------------------------------------- */
void PhaseFieldModel::unpackData(CommunicationBuffer & buffer,
const Array<Idx> & indexes,
const SynchronizationTag & tag) {
switch (tag) {
case SynchronizationTag::_for_dump: {
unpackDOFDataHelper(*damage, buffer, indexes);
break;
}
case SynchronizationTag::_pfm_damage: {
unpackDOFDataHelper(*damage, buffer, indexes);
break;
}
default: {
AKANTU_ERROR("Unknown ghost synchronization tag : " << tag);
}
}
}
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumpers::Field>
PhaseFieldModel::createNodalFieldBool(const std::string & field_name,
const std::string & group_name,
bool /*unused*/) {
std::map<std::string, Array<bool> *> uint_nodal_fields;
uint_nodal_fields["blocked_dofs"] = blocked_dofs.get();
return mesh.createNodalField(uint_nodal_fields[field_name], group_name);
std::shared_ptr<dumpers::Field> field;
return field;
}
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumpers::Field>
PhaseFieldModel::createNodalFieldReal(const std::string & field_name,
const std::string & group_name,
bool /*unused*/) {
std::map<std::string, Array<Real> *> real_nodal_fields;
real_nodal_fields["damage"] = damage.get();
real_nodal_fields["external_force"] = external_force.get();
real_nodal_fields["internal_force"] = internal_force.get();
return mesh.createNodalField(real_nodal_fields[field_name], group_name);
std::shared_ptr<dumpers::Field> field;
return field;
}
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumpers::Field> PhaseFieldModel::createElementalField(
const std::string & field_name, const std::string & group_name,
bool /*unused*/, Int /*unused*/, ElementKind element_kind) {
if (field_name == "partitions") {
return mesh.createElementalField<Int, dumpers::ElementPartitionField>(
mesh.getConnectivities(), group_name, this->spatial_dimension,
element_kind);
}
std::shared_ptr<dumpers::Field> field;
return field;
}
} // namespace akantu

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