v0.13.1
nonlinear_elastic.cpp

Plane stress elastic dynamic problem

/**
* \file nonlinear_elastic.cpp
* \example nonlinear_elastic.cpp
*
* Plane stress elastic dynamic problem
*
*/
#include <MoFEM.hpp>
using namespace MoFEM;
template <int DIM> struct ElementsAndOps {};
template <> struct ElementsAndOps<2> {
};
template <> struct ElementsAndOps<3> {
};
constexpr int SPACE_DIM = 3; //< Space dimension of problem, mesh
GAUSS>::OpGradTensorGrad<1, SPACE_DIM, SPACE_DIM, 1>;
using OpBodyForce =
DomainNaturalBC::OpFlux<NaturalMeshsetType<BLOCKSET>, 1, SPACE_DIM>;
using OpForce = BoundaryNaturalBC::OpFlux<NaturalForceMeshsets, 1, SPACE_DIM>;
constexpr double young_modulus = 100;
constexpr double poisson_ratio = 0.3;
constexpr double bulk_modulus_K = young_modulus / (3 * (1 - 2 * poisson_ratio));
constexpr double shear_modulus_G = young_modulus / (2 * (1 + poisson_ratio));
#include <HenckyOps.hpp>
using namespace HenckyOps;
struct Example {
Example(MoFEM::Interface &m_field) : mField(m_field) {}
private:
boost::shared_ptr<MatrixDouble> matGradPtr;
boost::shared_ptr<MatrixDouble> matStrainPtr;
boost::shared_ptr<MatrixDouble> matStressPtr;
boost::shared_ptr<MatrixDouble> matDPtr;
boost::shared_ptr<HenckyOps::CommonData> commonHenckyDataPtr;
};
//! [Create common data]
auto set_material_stiffness = [&]() {
constexpr double A =
(SPACE_DIM == 2) ? 2 * shear_modulus_G /
: 1;
auto t_D = getFTensor4DdgFromMat<SPACE_DIM, SPACE_DIM, 0>(*matDPtr);
t_D(i, j, k, l) = 2 * shear_modulus_G * ((t_kd(i, k) ^ t_kd(j, l)) / 4.) +
A * (bulk_modulus_K - (2. / 3.) * shear_modulus_G) *
t_kd(i, j) * t_kd(k, l);
};
matGradPtr = boost::make_shared<MatrixDouble>();
matStrainPtr = boost::make_shared<MatrixDouble>();
matStressPtr = boost::make_shared<MatrixDouble>();
matDPtr = boost::make_shared<MatrixDouble>();
commonHenckyDataPtr = boost::make_shared<HenckyOps::CommonData>();
constexpr auto size_symm = (SPACE_DIM * (SPACE_DIM + 1)) / 2;
matDPtr->resize(size_symm * size_symm, 1);
CHKERR set_material_stiffness();
}
//! [Create common data]
//! [Run problem]
}
//! [Run problem]
//! [Read mesh]
CHKERR simple->getOptions();
CHKERR simple->loadFile();
}
//! [Read mesh]
//! [Set up problem]
// Add field
CHKERR simple->addBoundaryField("U", H1, AINSWORTH_LEGENDRE_BASE, SPACE_DIM);
int order = 2;
CHKERR PetscOptionsGetInt(PETSC_NULL, "", "-order", &order, PETSC_NULL);
CHKERR simple->setFieldOrder("U", order);
CHKERR simple->setUp();
}
//! [Set up problem]
//! [Boundary condition]
auto *pipeline_mng = mField.getInterface<PipelineManager>();
auto bc_mng = mField.getInterface<BcManager>();
CHKERR BoundaryNaturalBC::AddFluxToPipeline<OpForce>::add(
pipeline_mng->getOpBoundaryRhsPipeline(), mField, "U",
{boost::make_shared<TimeScale>()}, "FORCE", Sev::inform);
//! [Define gravity vector]
CHKERR DomainNaturalBC::AddFluxToPipeline<OpBodyForce>::add(
pipeline_mng->getOpDomainRhsPipeline(), mField, "U",
{boost::make_shared<TimeScale>()}, "BODY_FORCE", Sev::inform);
// Essential BC
CHKERR bc_mng->removeBlockDOFsOnEntities<DisplacementCubitBcData>(
simple->getProblemName(), "U");
auto get_bc_hook = [&]() {
mField, pipeline_mng->getDomainRhsFE(),
{boost::make_shared<TimeScale>()});
return hook;
};
pipeline_mng->getDomainRhsFE()->preProcessHook = get_bc_hook();
}
//! [Boundary condition]
//! [Push operators to pipeline]
auto *pipeline_mng = mField.getInterface<PipelineManager>();
auto add_domain_base_ops = [&](auto &pipeline) {
auto det_ptr = boost::make_shared<VectorDouble>();
auto jac_ptr = boost::make_shared<MatrixDouble>();
auto inv_jac_ptr = boost::make_shared<MatrixDouble>();
pipeline.push_back(new OpCalculateHOJac<SPACE_DIM>(jac_ptr));
pipeline.push_back(
new OpInvertMatrix<SPACE_DIM>(jac_ptr, det_ptr, inv_jac_ptr));
pipeline.push_back(
pipeline.push_back(new OpSetHOWeights(det_ptr));
"U", matGradPtr));
pipeline.push_back(
pipeline.push_back(
pipeline.push_back(
pipeline.push_back(
pipeline.push_back(
};
auto add_domain_ops_lhs = [&](auto &pipeline) {
pipeline.push_back(
pipeline.push_back(new OpK("U", "U", commonHenckyDataPtr->getMatTangent()));
};
auto add_domain_ops_rhs = [&](auto &pipeline) {
// Calculate internal forece
pipeline.push_back(new OpInternalForce(
"U", commonHenckyDataPtr->getMatFirstPiolaStress()));
};
CHKERR add_domain_base_ops(pipeline_mng->getOpDomainLhsPipeline());
CHKERR add_domain_ops_lhs(pipeline_mng->getOpDomainLhsPipeline());
CHKERR add_domain_base_ops(pipeline_mng->getOpDomainRhsPipeline());
CHKERR add_domain_ops_rhs(pipeline_mng->getOpDomainRhsPipeline());
auto integration_rule = [](int, int, int approx_order) {
return 2 * (approx_order - 1);
};
CHKERR pipeline_mng->setDomainRhsIntegrationRule(integration_rule);
CHKERR pipeline_mng->setDomainLhsIntegrationRule(integration_rule);
CHKERR pipeline_mng->setBoundaryRhsIntegrationRule(integration_rule);
}
//! [Push operators to pipeline]
/**
* @brief Monitor solution
*
* This functions is called by TS solver at the end of each step. It is used
* to output results to the hard drive.
*/
struct Monitor : public FEMethod {
Monitor(SmartPetscObj<DM> dm, boost::shared_ptr<PostProcEle> post_proc)
: dM(dm), postProc(post_proc){};
constexpr int save_every_nth_step = 1;
CHKERR postProc->writeFile(
"out_step_" + boost::lexical_cast<std::string>(ts_step) + ".h5m");
}
}
private:
boost::shared_ptr<PostProcEle> postProc;
};
//! [Solve]
auto *pipeline_mng = mField.getInterface<PipelineManager>();
auto dm = simple->getDM();
auto ts = pipeline_mng->createTSIM();
// Setup postprocessing
auto post_proc_fe = boost::make_shared<PostProcEle>(mField);
auto det_ptr = boost::make_shared<VectorDouble>();
auto jac_ptr = boost::make_shared<MatrixDouble>();
auto inv_jac_ptr = boost::make_shared<MatrixDouble>();
post_proc_fe->getOpPtrVector().push_back(
post_proc_fe->getOpPtrVector().push_back(
new OpInvertMatrix<SPACE_DIM>(jac_ptr, det_ptr, inv_jac_ptr));
post_proc_fe->getOpPtrVector().push_back(
post_proc_fe->getOpPtrVector().push_back(
"U", commonHenckyDataPtr->matGradPtr));
post_proc_fe->getOpPtrVector().push_back(
post_proc_fe->getOpPtrVector().push_back(
post_proc_fe->getOpPtrVector().push_back(
post_proc_fe->getOpPtrVector().push_back(
post_proc_fe->getOpPtrVector().push_back(
auto u_ptr = boost::make_shared<MatrixDouble>();
post_proc_fe->getOpPtrVector().push_back(
post_proc_fe->getOpPtrVector().push_back(
new OpPPMap(
post_proc_fe->getPostProcMesh(), post_proc_fe->getMapGaussPts(),
{},
{{"U", u_ptr}},
{{"GRAD", commonHenckyDataPtr->matGradPtr},
{"FIRST_PIOLA", commonHenckyDataPtr->getMatFirstPiolaStress()}},
{}
)
);
// Add monitor to time solver
boost::shared_ptr<FEMethod> null_fe;
auto monitor_ptr = boost::make_shared<Monitor>(dm, post_proc_fe);
CHKERR DMMoFEMTSSetMonitor(dm, ts, simple->getDomainFEName(), null_fe,
null_fe, monitor_ptr);
double ftime = 1;
CHKERR TSSetDuration(ts, PETSC_DEFAULT, ftime);
CHKERR TSSetExactFinalTime(ts, TS_EXACTFINALTIME_MATCHSTEP);
auto D = smartCreateDMVector(simple->getDM());
CHKERR TSSetSolution(ts, D);
CHKERR TSSetFromOptions(ts);
CHKERR TSSolve(ts, NULL);
CHKERR TSGetTime(ts, &ftime);
PetscInt steps, snesfails, rejects, nonlinits, linits;
CHKERR TSGetTimeStepNumber(ts, &steps);
CHKERR TSGetSNESFailures(ts, &snesfails);
CHKERR TSGetStepRejections(ts, &rejects);
CHKERR TSGetSNESIterations(ts, &nonlinits);
CHKERR TSGetKSPIterations(ts, &linits);
MOFEM_LOG_C("EXAMPLE", Sev::inform,
"steps %D (%D rejected, %D SNES fails), ftime %g, nonlinits "
"%D, linits %D\n",
steps, rejects, snesfails, ftime, nonlinits, linits);
}
//! [Solve]
//! [Postprocess results]
PetscBool test_flg = PETSC_FALSE;
CHKERR PetscOptionsGetBool(PETSC_NULL, "", "-test", &test_flg, PETSC_NULL);
if (test_flg) {
auto T = smartCreateDMVector(simple->getDM());
CHKERR DMoFEMMeshToLocalVector(simple->getDM(), T, INSERT_VALUES,
SCATTER_FORWARD);
double nrm2;
CHKERR VecNorm(T, NORM_2, &nrm2);
MOFEM_LOG("EXAMPLE", Sev::inform) << "Regression norm " << nrm2;
constexpr double regression_value = 1.09572;
if (fabs(nrm2 - regression_value) > 1e-2)
SETERRQ(PETSC_COMM_WORLD, MOFEM_ATOM_TEST_INVALID,
"Regression test field; wrong norm value.");
}
}
//! [Postprocess results]
//! [Check]
}
//! [Check]
static char help[] = "...\n\n";
int main(int argc, char *argv[]) {
// Initialisation of MoFEM/PETSc and MOAB data structures
const char param_file[] = "param_file.petsc";
// Add logging channel for example
auto core_log = logging::core::get();
core_log->add_sink(
LogManager::createSink(LogManager::getStrmWorld(), "EXAMPLE"));
LogManager::setLog("EXAMPLE");
MOFEM_LOG_TAG("EXAMPLE", "example");
try {
//! [Register MoFEM discrete manager in PETSc]
DMType dm_name = "DMMOFEM";
//! [Register MoFEM discrete manager in PETSc
//! [Create MoAB]
moab::Core mb_instance; ///< mesh database
moab::Interface &moab = mb_instance; ///< mesh database interface
//! [Create MoAB]
//! [Create MoFEM]
MoFEM::Core core(moab); ///< finite element database
MoFEM::Interface &m_field = core; ///< finite element database interface
//! [Create MoFEM]
//! [Example]
Example ex(m_field);
CHKERR ex.runProblem();
//! [Example]
}
}
std::string param_file
ForcesAndSourcesCore::UserDataOperator UserDataOperator
#define MOFEM_LOG_C(channel, severity, format,...)
Definition: LogManager.hpp:304
void simple(double P1[], double P2[], double P3[], double c[], const int N)
Definition: acoustic.cpp:69
int main(int argc, char *argv[])
static char help[]
MoFEM::FaceElementForcesAndSourcesCore FaceEle
ElementsAndOps< SPACE_DIM >::DomainEle DomainEle
ElementsAndOps< SPACE_DIM >::BoundaryEle BoundaryEle
Kronecker Delta class symmetric.
MoFEM::EdgeElementForcesAndSourcesCore EdgeEle
#define CATCH_ERRORS
Catch errors.
Definition: definitions.h:372
@ AINSWORTH_LEGENDRE_BASE
Ainsworth Cole (Legendre) approx. base .
Definition: definitions.h:60
@ H1
continuous field
Definition: definitions.h:85
#define MoFEMFunctionBegin
First executable line of each MoFEM function, used for error handling. Final line of MoFEM functions ...
Definition: definitions.h:346
@ MOFEM_ATOM_TEST_INVALID
Definition: definitions.h:40
#define MoFEMFunctionReturn(a)
Last executable line of each PETSc function used for error handling. Replaces return()
Definition: definitions.h:416
#define CHKERR
Inline error check.
Definition: definitions.h:535
FormsIntegrators< DomainEleOp >::Assembly< A >::LinearForm< I >::OpGradTimesSymTensor< 1, SPACE_DIM, SPACE_DIM > OpInternalForce
Definition: elastic.cpp:44
auto integration_rule
constexpr auto t_kd
PetscErrorCode DMoFEMMeshToLocalVector(DM dm, Vec l, InsertMode mode, ScatterMode scatter_mode)
set local (or ghosted) vector values on mesh for partition only
Definition: DMMMoFEM.cpp:470
PetscErrorCode DMRegister_MoFEM(const char sname[])
Register MoFEM problem.
Definition: DMMMoFEM.cpp:47
PetscErrorCode DMoFEMLoopFiniteElements(DM dm, const char fe_name[], MoFEM::FEMethod *method, CacheTupleWeakPtr cache_ptr=CacheTupleSharedPtr())
Executes FEMethod for finite elements in DM.
Definition: DMMMoFEM.cpp:533
auto smartCreateDMVector(DM dm)
Get smart vector from DM.
Definition: DMMoFEM.hpp:965
#define MOFEM_LOG(channel, severity)
Log.
Definition: LogManager.hpp:301
#define MOFEM_LOG_TAG(channel, tag)
Tag channel.
Definition: LogManager.hpp:332
FTensor::Index< 'i', SPACE_DIM > i
FTensor::Index< 'l', 3 > l
FTensor::Index< 'j', 3 > j
FTensor::Index< 'k', 3 > k
const double T
FormsIntegrators< DomainEleOp >::Assembly< USER_ASSEMBLE >::LinearForm< GAUSS >::OpSource< 1, 3 > OpBodyForce
PetscErrorCode MoFEMErrorCode
MoFEM/PETSc error code.
Definition: Exceptions.hpp:56
implementation of Data Operators for Forces and Sources
Definition: MoFEM.hpp:24
PetscErrorCode DMMoFEMTSSetMonitor(DM dm, TS ts, const std::string fe_name, boost::shared_ptr< MoFEM::FEMethod > method, boost::shared_ptr< MoFEM::BasicMethod > pre_only, boost::shared_ptr< MoFEM::BasicMethod > post_only)
Set Monitor To TS solver.
Definition: DMMMoFEM.cpp:1003
PetscErrorCode PetscOptionsGetInt(PetscOptions *, const char pre[], const char name[], PetscInt *ivalue, PetscBool *set)
PetscErrorCode PetscOptionsGetBool(PetscOptions *, const char pre[], const char name[], PetscBool *bval, PetscBool *set)
CoreTmp< 0 > Core
Definition: Core.hpp:1086
DeprecatedCoreInterface Interface
Definition: Interface.hpp:1955
const double D
diffusivity
double A
int save_every_nth_step
OpPostProcMapInMoab< SPACE_DIM, SPACE_DIM > OpPPMap
NaturalBC< BoundaryEleOp >::Assembly< PETSC >::LinearForm< GAUSS > BoundaryNaturalBC
Definition: plastic.cpp:82
BoundaryNaturalBC::OpFlux< NaturalMeshsetType< BLOCKSET >, 1, SPACE_DIM > OpForce
Definition: plastic.cpp:84
NaturalBC< DomainEleOp >::Assembly< PETSC >::LinearForm< GAUSS > DomainNaturalBC
Definition: plastic.cpp:77
static constexpr int approx_order
[Example]
Definition: plastic.cpp:120
MoFEMErrorCode boundaryCondition()
[Set up problem]
Definition: helmholtz.cpp:106
MoFEMErrorCode assembleSystem()
[Applying essential BC]
Definition: helmholtz.cpp:154
MoFEMErrorCode readMesh()
[run problem]
Definition: helmholtz.cpp:73
boost::shared_ptr< MatrixDouble > matGradPtr
boost::shared_ptr< MatrixDouble > matStressPtr
boost::shared_ptr< MatrixDouble > matStrainPtr
MoFEMErrorCode checkResults()
[Postprocess results]
Definition: contact.cpp:659
MoFEMErrorCode solveSystem()
[Push operators to pipeline]
Definition: helmholtz.cpp:235
MoFEMErrorCode createCommonData()
[Set up problem]
Definition: plastic.cpp:186
Example(MoFEM::Interface &m_field)
Definition: plastic.cpp:122
MoFEMErrorCode runProblem()
[Run problem]
Definition: plastic.cpp:153
MoFEM::Interface & mField
Definition: plastic.cpp:127
MoFEMErrorCode setupProblem()
[Run problem]
Definition: plastic.cpp:165
MoFEMErrorCode outputResults()
[Solve]
Definition: helmholtz.cpp:255
boost::shared_ptr< MatrixDouble > matDPtr
boost::shared_ptr< HenckyOps::CommonData > commonHenckyDataPtr
Definition: plastic.cpp:136
Simple interface for fast problem set-up.
Definition: BcManager.hpp:23
Core (interface) class.
Definition: Core.hpp:82
static MoFEMErrorCode Initialize(int *argc, char ***args, const char file[], const char help[])
Initializes the MoFEM database PETSc, MOAB and MPI.
Definition: Core.cpp:72
static MoFEMErrorCode Finalize()
Checks for options to be called at the conclusion of the program.
Definition: Core.cpp:112
Deprecated interface functions.
Definition of the displacement bc data structure.
Definition: BCData.hpp:72
Data on single entity (This is passed as argument to DataOperator::doWork)
Assembly methods.
Definition: Natural.hpp:57
Get values at integration pts for tensor filed rank 1, i.e. vector field.
Post post-proc data at points from hash maps.
Set inverse jacobian to base functions.
Set inverse jacobian to base functions.
PipelineManager interface.
Simple interface for fast problem set-up.
Definition: Simple.hpp:26
PetscInt ts_step
time step
MoFEMErrorCode getInterface(IFACE *&iface) const
Get interface refernce to pointer of interface.
Monitor solution.
Monitor(SmartPetscObj< DM > dm, boost::shared_ptr< PostProcEle > post_proc)
SmartPetscObj< DM > dM
MoFEMErrorCode postProcess()
function is run at the end of loop
boost::shared_ptr< PostProcEle > postProc
EntitiesFieldData::EntData EntData
FormsIntegrators< DomainEleOp >::Assembly< PETSC >::LinearForm< GAUSS >::OpGradTimesTensor< 1, SPACE_DIM, SPACE_DIM > OpInternalForce
FormsIntegrators< DomainEleOp >::Assembly< PETSC >::BiLinearForm< GAUSS >::OpGradTensorGrad< 1, SPACE_DIM, SPACE_DIM, 1 > OpK
constexpr int SPACE_DIM
constexpr double poisson_ratio
constexpr double shear_modulus_G
constexpr double bulk_modulus_K
constexpr double young_modulus