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rAKA/src/model/model_couplers/coupler_solid_phasefield.cc
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coupler_solid_phasefield.cc
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/**
* Copyright (©) 2019-2023 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 "coupler_solid_phasefield.hh"
#include "dumpable_inline_impl.hh"
#include "element_synchronizer.hh"
#include "integrator_gauss.hh"
#include "shape_lagrange.hh"
#include "solver_vector_default.hh"
#include "solver_vector_distributed.hh"
/* -------------------------------------------------------------------------- */
#include "dumper_iohelper_paraview.hh"
/* -------------------------------------------------------------------------- */
namespace akantu {
CouplerSolidPhaseField::CouplerSolidPhaseField(Mesh & mesh, Int dim,
const ID & id,
const ModelType model_type)
: Model(mesh, model_type, dim, id), initial_mass(0, 1, "initial_mass") {
this->registerFEEngineObject<MyFEEngineType>("CouplerSolidPhaseField", mesh,
Model::spatial_dimension);
this->mesh.registerDumper<DumperParaview>("coupler_solid_phasefield", id,
true);
this->mesh.addDumpMeshToDumper("coupler_solid_phasefield", mesh,
Model::spatial_dimension, _not_ghost,
_ek_regular);
this->registerDataAccessor(*this);
solid = std::make_unique<SolidMechanicsModel>(mesh, Model::spatial_dimension,
"solid_mechanics_model");
phase = std::make_unique<PhaseFieldModel>(mesh, Model::spatial_dimension,
"phase_field_model");
if (this->mesh.isDistributed()) {
auto & synchronizer = this->mesh.getElementSynchronizer();
this->registerSynchronizer(synchronizer, SynchronizationTag::_csp_damage);
this->registerSynchronizer(synchronizer, SynchronizationTag::_csp_strain);
}
this->initial_mass.resize(mesh.getNbNodes() * Model::spatial_dimension);
}
/* -------------------------------------------------------------------------- */
CouplerSolidPhaseField::~CouplerSolidPhaseField() = default;
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::initFullImpl(const ModelOptions & options) {
Model::initFullImpl(options);
this->initBC(*this, *displacement, *displacement_increment, *external_force);
solid->initFull(_analysis_method = this->method);
phase->initFull(_analysis_method = this->method);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::initModel() {
getFEEngine().initShapeFunctions(_not_ghost);
getFEEngine().initShapeFunctions(_ghost);
}
/* -------------------------------------------------------------------------- */
FEEngine & CouplerSolidPhaseField::getFEEngineBoundary(const ID & name) {
return dynamic_cast<FEEngine &>(
getFEEngineClassBoundary<MyFEEngineType>(name));
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::initSolver(
TimeStepSolverType time_step_solver_type) {
auto & solid_model_solver = aka::as_type<ModelSolver>(*solid);
solid_model_solver.initSolver(time_step_solver_type);
auto & phase_model_solver = aka::as_type<ModelSolver>(*phase);
phase_model_solver.initSolver(time_step_solver_type);
}
/* -------------------------------------------------------------------------- */
std::tuple<ID, TimeStepSolverType>
CouplerSolidPhaseField::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);
}
}
/* -------------------------------------------------------------------------- */
TimeStepSolverType CouplerSolidPhaseField::getDefaultSolverType() const {
return TimeStepSolverType::_dynamic_lumped;
}
/* -------------------------------------------------------------------------- */
ModelSolverOptions CouplerSolidPhaseField::getDefaultSolverOptions(
const TimeStepSolverType & type) const {
ModelSolverOptions options;
switch (type) {
case TimeStepSolverType::_dynamic_lumped: {
options.non_linear_solver_type = NonLinearSolverType::_lumped;
options.integration_scheme_type["displacement"] =
IntegrationSchemeType::_central_difference;
options.solution_type["displacement"] = IntegrationScheme::_acceleration;
break;
}
case TimeStepSolverType::_dynamic: {
options.non_linear_solver_type = NonLinearSolverType::_lumped;
options.integration_scheme_type["displacement"] =
IntegrationSchemeType::_central_difference;
options.solution_type["displacement"] = IntegrationScheme::_acceleration;
break;
}
case TimeStepSolverType::_static: {
options.non_linear_solver_type = NonLinearSolverType::_linear;
options.integration_scheme_type["displacement"] =
IntegrationSchemeType::_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 CouplerSolidPhaseField::assembleResidual() {
// computes the internal forces
this->assembleInternalForces();
auto & solid_internal_force = solid->getInternalForce();
auto & solid_external_force = solid->getExternalForce();
auto & phasefield_internal_force = phase->getInternalForce();
auto & phasefield_external_force = phase->getExternalForce();
/* ------------------------------------------------------------------------ */
this->getDOFManager().assembleToResidual("displacement", solid_external_force,
1);
this->getDOFManager().assembleToResidual("displacement", solid_internal_force,
1);
this->getDOFManager().assembleToResidual("damage", phasefield_external_force,
1);
this->getDOFManager().assembleToResidual("damage", phasefield_internal_force,
1);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleResidual(const ID & residual_part) {
AKANTU_DEBUG_IN();
auto & solid_internal_force = solid->getInternalForce();
auto & solid_external_force = solid->getExternalForce();
auto & phasefield_internal_force = phase->getInternalForce();
auto & phasefield_external_force = phase->getExternalForce();
if ("external" == residual_part) {
this->getDOFManager().assembleToResidual("displacement",
solid_external_force, 1);
this->getDOFManager().assembleToResidual("displacement",
solid_internal_force, 1);
AKANTU_DEBUG_OUT();
return;
}
if ("internal" == residual_part) {
this->getDOFManager().assembleToResidual("damage",
phasefield_external_force, 1);
this->getDOFManager().assembleToResidual("damage",
phasefield_internal_force, 1);
AKANTU_DEBUG_OUT();
return;
}
AKANTU_CUSTOM_EXCEPTION(
debug::SolverCallbackResidualPartUnknown(residual_part));
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::predictor() {
auto & solid_model_solver = aka::as_type<ModelSolver>(*solid);
solid_model_solver.predictor();
auto & phase_model_solver = aka::as_type<ModelSolver>(*phase);
phase_model_solver.predictor();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::corrector() {
auto & solid_model_solver = aka::as_type<ModelSolver>(*solid);
solid_model_solver.corrector();
auto & phase_model_solver = aka::as_type<ModelSolver>(*phase);
phase_model_solver.corrector();
}
/* -------------------------------------------------------------------------- */
MatrixType CouplerSolidPhaseField::getMatrixType(const ID & matrix_id) const {
if (matrix_id == "K") {
return _symmetric;
}
if (matrix_id == "M") {
return _symmetric;
}
return _mt_not_defined;
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleMatrix(const ID & matrix_id) {
if (matrix_id == "K") {
this->assembleStiffnessMatrix();
} else if (matrix_id == "M") {
solid->assembleMass();
}
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleLumpedMatrix(const ID & matrix_id) {
if (matrix_id == "M") {
solid->assembleMassLumped();
}
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::beforeSolveStep() {
auto & solid_solver_callback = aka::as_type<SolverCallback>(*solid);
solid_solver_callback.beforeSolveStep();
auto & phase_solver_callback = aka::as_type<SolverCallback>(*phase);
phase_solver_callback.beforeSolveStep();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::afterSolveStep(bool converged) {
auto & solid_solver_callback = aka::as_type<SolverCallback>(*solid);
solid_solver_callback.afterSolveStep(converged);
auto & phase_solver_callback = aka::as_type<SolverCallback>(*phase);
phase_solver_callback.afterSolveStep(converged);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleInternalForces() {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_INFO("Assemble the internal forces");
solid->assembleInternalForces();
phase->assembleInternalForces();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleStiffnessMatrix() {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_INFO("Assemble the new stiffness matrix");
solid->assembleStiffnessMatrix();
phase->assembleStiffnessMatrix();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleMassLumped() {
solid->assembleMassLumped();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleMass() { solid->assembleMass(); }
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleMassLumped(GhostType ghost_type) {
solid->assembleMassLumped(ghost_type);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleMass(GhostType ghost_type) {
solid->assembleMass(ghost_type);
}
/* ------------------------------------------------------------------------- */
void CouplerSolidPhaseField::computeDamageOnQuadPoints(GhostType ghost_type) {
auto & fem = phase->getFEEngine();
auto & mesh = phase->getMesh();
auto nb_materials = solid->getNbConstitutiveLaws();
auto nb_phasefields = phase->getNbConstitutiveLaws();
AKANTU_DEBUG_ASSERT(
nb_phasefields == nb_materials,
"The number of phasefields and materials should be equal");
for (auto index : arange(nb_materials)) {
auto & material = solid->getConstitutiveLaw(index);
for (auto index2 : arange(nb_phasefields)) {
auto & phasefield = phase->getConstitutiveLaw(index2);
if (phasefield.getName() == material.getName()) {
tuple_dispatch<AllSpatialDimensions>(
[&](auto && _) {
constexpr auto && dim_ = aka::decay_v<decltype(_)>;
auto & mat = static_cast<MaterialPhaseField<dim_> &>(material);
auto & damage = mat.getDamage();
auto & phase_damage = phasefield.getDamage();
for (const auto & type :
mesh.elementTypes(this->spatial_dimension, ghost_type)) {
auto & damage_on_qpoints_vect = damage(type, ghost_type);
auto & phase_damage_on_qpoints_vect =
phase_damage(type, ghost_type);
fem.interpolateOnIntegrationPoints(phase->getDamage(),
phase_damage_on_qpoints_vect,
1, type, ghost_type);
// Doesn't work because phase_damage_on_qpoints is not
// interpolated after solve step
damage_on_qpoints_vect.copy(phase_damage_on_qpoints_vect);
}
},
this->spatial_dimension);
}
}
}
}
/* ------------------------------------------------------------------------- */
void CouplerSolidPhaseField::computeStrainOnQuadPoints(GhostType ghost_type) {
AKANTU_DEBUG_IN();
auto & gradu_internal =
solid->flattenInternal("grad_u", _ek_regular, ghost_type);
auto & epsilon_thermal_internal =
solid->flattenInternal("epsilon_th", _ek_regular, ghost_type);
auto & mesh = solid->getMesh();
auto & fem = solid->getFEEngine();
ElementTypeMapArray<Real> strain_tmp("temporary strain on quads");
strain_tmp.initialize(fem,
_nb_component = spatial_dimension * spatial_dimension,
_spatial_dimension = spatial_dimension,
_ghost_type = ghost_type, _with_nb_element = true);
for (const auto & type : mesh.elementTypes(spatial_dimension, ghost_type)) {
auto & strain_vect = strain_tmp(type, ghost_type);
const auto & gradu_vect = gradu_internal(type, ghost_type);
const auto & epsilon_thermal_vect =
epsilon_thermal_internal(type, ghost_type);
for (auto && [grad_u, strain, epsilon_th] :
zip(make_view(gradu_vect, spatial_dimension, spatial_dimension),
make_view(strain_vect, spatial_dimension, spatial_dimension),
epsilon_thermal_vect)) {
strain = (grad_u + grad_u.transpose()) / 2. -
epsilon_th *
Matrix<Real>::Identity(spatial_dimension, spatial_dimension);
}
}
phase->inflateInternal("strain", strain_tmp, ghost_type, _ek_regular);
AKANTU_DEBUG_OUT();
}
/* ------------------------------------------------------------------------- */
void CouplerSolidPhaseField::solve(const ID & solid_solver_id,
const ID & phase_solver_id) {
solid->solveStep(solid_solver_id);
// solid->synchronize(SynchronizationTag::_smm_gradu);
AKANTU_DEBUG_INFO("exchange strain for local elements");
this->computeStrainOnQuadPoints(_not_ghost);
// AKANTU_DEBUG_INFO("exchange strain for ghost elements");
// this->computeStrainOnQuadPoints(_ghost);
phase->solveStep(phase_solver_id);
// phase->synchronize(SynchronizationTag::_pfm_damage);
AKANTU_DEBUG_INFO("exchange damage for local elements");
this->computeDamageOnQuadPoints(_not_ghost);
AKANTU_DEBUG_INFO("exchange damage for ghost elements");
this->computeDamageOnQuadPoints(_ghost);
solid->assembleInternalForces();
}
/* ------------------------------------------------------------------------- */
bool CouplerSolidPhaseField::checkConvergence(Array<Real> & u_new,
Array<Real> & u_old,
Array<Real> & d_new,
Array<Real> & d_old) {
const Array<bool> & blocked_dofs = solid->getBlockedDOFs();
Int nb_degree_of_freedom = u_new.size();
auto u_n_it = u_new.begin();
auto u_o_it = u_old.begin();
auto bld_it = blocked_dofs.begin();
Real norm = 0;
for (Int n = 0; n < nb_degree_of_freedom; ++n, ++u_n_it, ++u_o_it, ++bld_it) {
if ((!*bld_it)) {
norm += (*u_n_it - *u_o_it) * (*u_n_it - *u_o_it);
}
}
norm = std::sqrt(norm);
auto d_n_it = d_new.begin();
auto d_o_it = d_old.begin();
nb_degree_of_freedom = d_new.size();
Real norm2 = 0;
for (Int i = 0; i < nb_degree_of_freedom; ++i) {
norm2 += (*d_n_it - *d_o_it);
}
norm2 = std::sqrt(norm2);
Real error = std::max(norm, norm2);
Real tolerance = 1e-8;
return error < tolerance;
}
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumpers::Field> CouplerSolidPhaseField::createElementalField(
const std::string & field_name, const std::string & group_name,
bool padding_flag, Idx spatial_dimension, ElementKind kind) {
return solid->createElementalField(field_name, group_name, padding_flag,
spatial_dimension, kind);
}
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumpers::Field>
CouplerSolidPhaseField::createNodalFieldReal(const std::string & field_name,
const std::string & group_name,
bool padding_flag) {
return solid->createNodalFieldReal(field_name, group_name, padding_flag);
}
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumpers::Field>
CouplerSolidPhaseField::createNodalFieldBool(const std::string & field_name,
const std::string & group_name,
bool padding_flag) {
return solid->createNodalFieldBool(field_name, group_name, padding_flag);
}
/* -----------------------------------------------------------------------*/
void CouplerSolidPhaseField::dump(const std::string & dumper_name) {
solid->onDump();
mesh.dump(dumper_name);
}
/* ------------------------------------------------------------------------*/
void CouplerSolidPhaseField::dump(const std::string & dumper_name, Int step) {
solid->onDump();
mesh.dump(dumper_name, step);
}
/* ----------------------------------------------------------------------- */
void CouplerSolidPhaseField::dump(const std::string & dumper_name, Real time,
Int step) {
solid->onDump();
mesh.dump(dumper_name, time, step);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::dump() {
solid->onDump();
mesh.dump();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::dump(Int step) {
solid->onDump();
mesh.dump(step);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::dump(Real time, Int step) {
solid->onDump();
mesh.dump(time, step);
}
} // namespace akantu
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