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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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/**
* @file coupler_solid_phasefield.cc
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Fri Sep 28 2018
* @date last modification: Thu Jun 20 2019
*
* @brief class for coupling of solid mechancis and phasefield 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 "coupler_solid_phasefield.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 {
CouplerSolidPhaseField::CouplerSolidPhaseField(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>("CouplerSolidPhaseField", mesh,
Model::spatial_dimension);
#if defined(AKANTU_USE_IOHELPER)
this->mesh.registerDumper<DumperParaview>("coupler_solid_phasefield", id,
true);
this->mesh.addDumpMeshToDumper("coupler_solid_phasefield", mesh,
Model::spatial_dimension, _not_ghost,
_ek_regular);
#endif
this->registerDataAccessor(*this);
solid = new SolidMechanicsModel(mesh, Model::spatial_dimension,
"solid_mechanics_model", 0);
phasefield = new PhaseFieldModel(mesh, Model::spatial_dimension,
"phase_field_model", 0);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
CouplerSolidPhaseField::~CouplerSolidPhaseField() {}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::initFullImpl(const ModelOptions & options) {
Model::initFullImpl(options);
this->initBC(*this, *displacement, *displacement_increment, *external_force);
}
/* -------------------------------------------------------------------------- */
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,
NonLinearSolverType) {}
/* -------------------------------------------------------------------------- */
std::tuple<ID, TimeStepSolverType>
CouplerSolidPhaseField::getDefaultSolverID(const AnalysisMethod & method) {
return std::make_tuple("unkown", 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 = phasefield->getInternalForce();
auto & phasefield_external_force = phasefield->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 = phasefield->getInternalForce();
auto & phasefield_external_force = phasefield->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();
}
/* -------------------------------------------------------------------------- */
MatrixType CouplerSolidPhaseField::getMatrixType(const ID & matrix_id) {
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::assembleInternalForces() {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_INFO("Assemble the internal forces");
solid->assembleInternalForces();
phasefield->assembleInternalForces();
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::assembleStiffnessMatrix() {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_INFO("Assemble the new stiffness matrix");
solid->assembleStiffnessMatrix();
phasefield->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(
const GhostType & ghost_type) {
AKANTU_DEBUG_IN();
auto & fem = phasefield->getFEEngine();
auto & mesh = phasefield->getMesh();
switch (spatial_dimension) {
case 1: {
auto & mat = static_cast<MaterialPhaseField<1> &>(solid->getMaterial(0));
auto & damage = mat.getDamage();
for (auto & type :
mesh.elementTypes(Model::spatial_dimension, ghost_type)) {
auto & damage_on_qpoints_vect = damage(type, ghost_type);
fem.interpolateOnIntegrationPoints(
phasefield->getDamage(), damage_on_qpoints_vect, 1, type, ghost_type);
}
break;
}
case 2: {
auto & mat = static_cast<MaterialPhaseField<2> &>(solid->getMaterial(0));
auto & damage = mat.getDamage();
for (auto & type :
mesh.elementTypes(Model::spatial_dimension, ghost_type)) {
auto & damage_on_qpoints_vect = damage(type, ghost_type);
fem.interpolateOnIntegrationPoints(
phasefield->getDamage(), damage_on_qpoints_vect, 1, type, ghost_type);
}
break;
}
default:
auto & mat = static_cast<MaterialPhaseField<3> &>(solid->getMaterial(0));
break;
}
AKANTU_DEBUG_OUT();
}
/* ------------------------------------------------------------------------- */
void CouplerSolidPhaseField::computeStrainOnQuadPoints(
const GhostType & ghost_type) {
AKANTU_DEBUG_IN();
auto & strain_on_qpoints = phasefield->getStrain();
auto & gradu_on_qpoints = solid->getMaterial(0).getGradU();
for (auto & type : mesh.elementTypes(Model::spatial_dimension, ghost_type)) {
auto & strain_on_qpoints_vect = strain_on_qpoints(type, ghost_type);
auto & gradu_on_qpoints_vect = gradu_on_qpoints(type, ghost_type);
for (auto && values :
zip(make_view(strain_on_qpoints_vect, Model::spatial_dimension,
Model::spatial_dimension),
make_view(gradu_on_qpoints_vect, Model::spatial_dimension,
Model::spatial_dimension))) {
auto & strain = std::get<0>(values);
auto & grad_u = std::get<1>(values);
this->gradUToEpsilon(grad_u, strain);
}
}
AKANTU_DEBUG_OUT();
}
/* ------------------------------------------------------------------------- */
void CouplerSolidPhaseField::solve() {
solid->solveStep();
this->computeStrainOnQuadPoints(_not_ghost);
phasefield->solveStep();
this->computeDamageOnQuadPoints(_not_ghost);
solid->assembleInternalForces();
}
/* ------------------------------------------------------------------------- */
void CouplerSolidPhaseField::gradUToEpsilon(const Matrix<Real> & grad_u,
Matrix<Real> & epsilon) {
for (UInt i = 0; i < Model::spatial_dimension; ++i) {
for (UInt j = 0; j < Model::spatial_dimension; ++j)
epsilon(i, j) = 0.5 * (grad_u(i, j) + grad_u(j, i));
}
}
/* ------------------------------------------------------------------------- */
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();
UInt 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 (UInt 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 (UInt 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;
if (error < tolerance) {
return true;
}
return false;
}
/* -------------------------------------------------------------------------- */
#ifdef AKANTU_USE_IOHELPER
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumper::Field> CouplerSolidPhaseField::createElementalField(
const std::string & field_name, const std::string & group_name,
bool padding_flag, const UInt & spatial_dimension,
const ElementKind & kind) {
return solid->createElementalField(field_name, group_name, padding_flag,
spatial_dimension, kind);
std::shared_ptr<dumper::Field> field;
return field;
}
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumper::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<dumper::Field> field;
return field;
}
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumper::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);
std::shared_ptr<dumper::Field> field;
return field;
}
#else
/* -------------------------------------------------------------------------- */
std::shared_ptr<dumper::Field> CouplerSolidPhaseField::createElementalField(
const std::string &, const std::string &, bool, const UInt &,
const ElementKind &) {
return nullptr;
}
/* ----------------------------------------------------------------------- */
std::shared_ptr<dumper::Field>
CouplerSolidPhaseField::createNodalFieldReal(const std::string &,
const std::string &, bool) {
return nullptr;
}
/*-------------------------------------------------------------------*/
std::shared_ptr<dumper::Field>
CouplerSolidPhaseField::createNodalFieldBool(const std::string &,
const std::string &, bool) {
return nullptr;
}
#endif
/* -----------------------------------------------------------------------*/
void CouplerSolidPhaseField::dump(const std::string & dumper_name) {
solid->onDump();
mesh.dump(dumper_name);
}
/* ------------------------------------------------------------------------*/
void CouplerSolidPhaseField::dump(const std::string & dumper_name, UInt step) {
solid->onDump();
mesh.dump(dumper_name, step);
}
/* ----------------------------------------------------------------------- */
void CouplerSolidPhaseField::dump(const std::string & dumper_name, Real time,
UInt step) {
solid->onDump();
mesh.dump(dumper_name, time, step);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::dump() {
solid->onDump();
mesh.dump();
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::dump(UInt step) {
solid->onDump();
mesh.dump(step);
}
/* -------------------------------------------------------------------------- */
void CouplerSolidPhaseField::dump(Real time, UInt step) {
solid->onDump();
mesh.dump(time, step);
}
} // namespace akantu
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