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nonlinear_elastic.cpp File Reference

Atom test for linear elastic dynamics. More...

#include <BasicFiniteElements.hpp>

Go to the source code of this file.

Functions

int main (int argc, char *argv[])
 

Variables

static char help [] = "...\n\n"
 

Detailed Description

Atom test for linear elastic dynamics.

This is not exactly procedure for linear elastic dynamics, since jacobian is evaluated at every time step and snes procedure is involved. However it is implemented like that, to test methodology for general nonlinear problem.

Definition in file nonlinear_elastic.cpp.

Function Documentation

◆ main()

int main ( int  argc,
char *  argv[] 
)

Definition at line 22 of file nonlinear_elastic.cpp.

22 {
23
24 MoFEM::Core::Initialize(&argc, &argv, (char *)0, help);
25
26 try {
27
28 moab::Core mb_instance;
29 moab::Interface &moab = mb_instance;
30 int rank;
31 MPI_Comm_rank(PETSC_COMM_WORLD, &rank);
32
33 PetscBool flg = PETSC_TRUE;
34 char mesh_file_name[255];
35 CHKERR PetscOptionsGetString(PETSC_NULLPTR, PETSC_NULLPTR, "-my_file",
36 mesh_file_name, 255, &flg);
37 if (flg != PETSC_TRUE) {
38 SETERRQ(PETSC_COMM_SELF, 1, "*** ERROR -my_file (MESH FILE NEEDED)");
39 }
40
41 const char *option;
42 option = ""; //"PARALLEL=BCAST;";//;DEBUG_IO";
43 CHKERR moab.load_file(mesh_file_name, 0, option);
44
45 MoFEM::Core core(moab);
46 MoFEM::Interface &m_field = core;
47
48 // ref meshset ref level 0
49 BitRefLevel bit_level0;
50 bit_level0.set(0);
51 EntityHandle meshset_level0;
52 CHKERR moab.create_meshset(MESHSET_SET, meshset_level0);
53 CHKERR m_field.getInterface<BitRefManager>()->setBitRefLevelByDim(
54 0, 3, bit_level0);
55 CHKERR m_field.getInterface<BitRefManager>()->getEntitiesByRefLevel(
56 bit_level0, BitRefLevel().set(), meshset_level0);
57
58 // Fields
59 CHKERR m_field.add_field("SPATIAL_POSITION", H1, AINSWORTH_LEGENDRE_BASE,
60 3);
61 // add entitities (by tets) to the field
62 CHKERR m_field.add_ents_to_field_by_type(0, MBTET, "SPATIAL_POSITION");
63 // set app. order
64 PetscInt order;
65 CHKERR PetscOptionsGetInt(PETSC_NULLPTR, PETSC_NULLPTR, "-my_order", &order,
66 &flg);
67 if (flg != PETSC_TRUE) {
68 order = 1;
69 }
70 CHKERR m_field.set_field_order(0, MBTET, "SPATIAL_POSITION", order);
71 CHKERR m_field.set_field_order(0, MBTRI, "SPATIAL_POSITION", order);
72 CHKERR m_field.set_field_order(0, MBEDGE, "SPATIAL_POSITION", order);
73 CHKERR m_field.set_field_order(0, MBVERTEX, "SPATIAL_POSITION", 1);
74
75 NonlinearElasticElement elastic(m_field, 1);
76 boost::shared_ptr<
77 NonlinearElasticElement::FunctionsToCalculatePiolaKirchhoffI<double>>
78 double_kirchhoff_material_ptr(
79 new NonlinearElasticElement::FunctionsToCalculatePiolaKirchhoffI<
80 double>());
81 boost::shared_ptr<
82 NonlinearElasticElement::FunctionsToCalculatePiolaKirchhoffI<adouble>>
83 adouble_kirchhoff_material_ptr(
84 new NonlinearElasticElement::FunctionsToCalculatePiolaKirchhoffI<
85 adouble>());
86 CHKERR elastic.setBlocks(double_kirchhoff_material_ptr,
87 adouble_kirchhoff_material_ptr);
88 CHKERR elastic.addElement("ELASTIC", "SPATIAL_POSITION");
89 CHKERR elastic.setOperators("SPATIAL_POSITION");
90
91 // define problems
92 CHKERR m_field.add_problem("ELASTIC_MECHANICS");
93 // set refinement level for problem
94 CHKERR m_field.modify_problem_ref_level_add_bit("ELASTIC_MECHANICS",
95 bit_level0);
96 // set finite elements for problems
97 CHKERR m_field.modify_problem_add_finite_element("ELASTIC_MECHANICS",
98 "ELASTIC");
99
100 // build field
101 CHKERR m_field.build_fields();
102
103 // use this to apply some strain field to the body (testing only)
104 double scale_positions = 2;
105 {
106 EntityHandle node = 0;
107 double coords[3];
108 for (_IT_GET_DOFS_FIELD_BY_NAME_FOR_LOOP_(m_field, "SPATIAL_POSITION",
109 dof_ptr)) {
110 if (dof_ptr->get()->getEntType() != MBVERTEX)
111 continue;
112 EntityHandle ent = dof_ptr->get()->getEnt();
113 int dof_rank = dof_ptr->get()->getDofCoeffIdx();
114 double &fval = dof_ptr->get()->getFieldData();
115 if (node != ent) {
116 CHKERR moab.get_coords(&ent, 1, coords);
117 node = ent;
118 }
119 fval = scale_positions * coords[dof_rank];
120 }
121 }
122
123 // build finite elemnts
124 CHKERR m_field.build_finite_elements();
125 // build adjacencies
126 CHKERR m_field.build_adjacencies(bit_level0);
127
128 ProblemsManager *prb_mng_ptr;
129 CHKERR m_field.getInterface(prb_mng_ptr);
130 // build problem
131 CHKERR prb_mng_ptr->buildProblem("ELASTIC_MECHANICS", true);
132 // partition
133 CHKERR prb_mng_ptr->partitionProblem("ELASTIC_MECHANICS");
134 CHKERR prb_mng_ptr->partitionFiniteElements("ELASTIC_MECHANICS");
135 CHKERR prb_mng_ptr->partitionGhostDofs("ELASTIC_MECHANICS");
136
137 // create matrices
138 Vec F;
139 CHKERR m_field.getInterface<VecManager>()->vecCreateGhost(
140 "ELASTIC_MECHANICS", COL, &F);
141 Mat Aij;
142 CHKERR m_field.getInterface<MatrixManager>()
143 ->createMPIAIJWithArrays<PetscGlobalIdx_mi_tag>("ELASTIC_MECHANICS",
144 &Aij);
145
146 elastic.getLoopFeRhs().snes_f = F;
147 elastic.getLoopFeLhs().snes_B = Aij;
148
149 CHKERR m_field.loop_finite_elements("ELASTIC_MECHANICS", "ELASTIC",
150 elastic.getLoopFeRhs());
151 CHKERR VecGhostUpdateBegin(F, ADD_VALUES, SCATTER_REVERSE);
152 CHKERR VecGhostUpdateEnd(F, ADD_VALUES, SCATTER_REVERSE);
153 CHKERR VecAssemblyBegin(F);
154 CHKERR VecAssemblyEnd(F);
155
156 CHKERR m_field.loop_finite_elements("ELASTIC_MECHANICS", "ELASTIC",
157 elastic.getLoopFeLhs());
158 CHKERR MatAssemblyBegin(Aij, MAT_FINAL_ASSEMBLY);
159 CHKERR MatAssemblyEnd(Aij, MAT_FINAL_ASSEMBLY);
160
161 double sum = 0;
162 CHKERR VecSum(F, &sum);
163 CHKERR PetscPrintf(PETSC_COMM_WORLD, "sum = %4.3e\n", sum);
164 double fnorm;
165 CHKERR VecNorm(F, NORM_2, &fnorm);
166 CHKERR PetscPrintf(PETSC_COMM_WORLD, "fnorm = %9.8e\n", fnorm);
167
168 double mnorm;
169 CHKERR MatNorm(Aij, NORM_1, &mnorm);
170 CHKERR PetscPrintf(PETSC_COMM_WORLD, "mnorm = %9.8e\n", mnorm);
171
172 if (fabs(sum) > 1e-8) {
173 SETERRQ(PETSC_COMM_WORLD, MOFEM_ATOM_TEST_INVALID, "Failed to pass test");
174 }
175 if (fabs(fnorm - 5.12196914e+00) > 1e-6) {
176 SETERRQ(PETSC_COMM_WORLD, MOFEM_ATOM_TEST_INVALID, "Failed to pass test");
177 }
178 if (fabs(mnorm - 5.48280139e+01) > 1e-6) {
179 SETERRQ(PETSC_COMM_WORLD, MOFEM_ATOM_TEST_INVALID, "Failed to pass test");
180 }
181
182 CHKERR VecDestroy(&F);
183 CHKERR MatDestroy(&Aij);
184 }
185 CATCH_ERRORS;
186
187 MoFEM::Core::Finalize();
188
189 return 0;
190}
COL
@ COL
Definition definitions.h:136
CATCH_ERRORS
#define CATCH_ERRORS
Catch errors.
Definition definitions.h:385
AINSWORTH_LEGENDRE_BASE
@ AINSWORTH_LEGENDRE_BASE
Ainsworth Cole (Legendre) approx. base .
Definition definitions.h:60
H1
@ H1
continuous field
Definition definitions.h:85
MOFEM_ATOM_TEST_INVALID
@ MOFEM_ATOM_TEST_INVALID
Definition definitions.h:40
CHKERR
#define CHKERR
Inline error check.
Definition definitions.h:551
order
constexpr int order
Definition dg_projection.cpp:19
F
@ F
Definition free_surface.cpp:624
_IT_GET_DOFS_FIELD_BY_NAME_FOR_LOOP_
#define _IT_GET_DOFS_FIELD_BY_NAME_FOR_LOOP_(MFIELD, NAME, IT)
Definition Interface.hpp:1981
MoFEM::CoreInterface::build_finite_elements
virtual MoFEMErrorCode build_finite_elements(int verb=DEFAULT_VERBOSITY)=0
Build finite elements.
MoFEM::CoreInterface::build_fields
virtual MoFEMErrorCode build_fields(int verb=DEFAULT_VERBOSITY)=0
MoFEM::CoreInterface::set_field_order
virtual MoFEMErrorCode set_field_order(const EntityHandle meshset, const EntityType type, const std::string &name, const ApproximationOrder order, int verb=DEFAULT_VERBOSITY)=0
Set order approximation of the entities in the field.
MoFEM::CoreInterface::add_ents_to_field_by_type
virtual MoFEMErrorCode add_ents_to_field_by_type(const Range &ents, const EntityType type, const std::string &name, int verb=DEFAULT_VERBOSITY)=0
Add entities to field meshset.
MoFEM::CoreInterface::loop_finite_elements
virtual MoFEMErrorCode loop_finite_elements(const std::string problem_name, const std::string &fe_name, FEMethod &method, boost::shared_ptr< NumeredEntFiniteElement_multiIndex > fe_ptr=nullptr, MoFEMTypes bh=MF_EXIST, CacheTupleWeakPtr cache_ptr=CacheTupleSharedPtr(), int verb=DEFAULT_VERBOSITY)=0
Make a loop over finite elements.
MoFEM::ProblemsManager::partitionGhostDofs
MoFEMErrorCode partitionGhostDofs(const std::string name, int verb=VERBOSE)
determine ghost nodes
Definition ProblemsManager.cpp:2344
MoFEM::ProblemsManager::buildProblem
MoFEMErrorCode buildProblem(const std::string name, const bool square_matrix, int verb=VERBOSE)
build problem data structures
Definition ProblemsManager.cpp:86
MoFEM::ProblemsManager::partitionProblem
MoFEMErrorCode partitionProblem(const std::string name, int verb=VERBOSE)
partition problem dofs (collective)
Definition ProblemsManager.cpp:1679
MoFEM::ProblemsManager::partitionFiniteElements
MoFEMErrorCode partitionFiniteElements(const std::string name, bool part_from_moab=false, int low_proc=-1, int hi_proc=-1, int verb=VERBOSE)
partition finite elements
Definition ProblemsManager.cpp:2163
MoFEM::CoreInterface::add_problem
virtual MoFEMErrorCode add_problem(const std::string &name, enum MoFEMTypes bh=MF_EXCL, int verb=DEFAULT_VERBOSITY)=0
Add problem.
MoFEM::CoreInterface::modify_problem_ref_level_add_bit
virtual MoFEMErrorCode modify_problem_ref_level_add_bit(const std::string &name_problem, const BitRefLevel &bit)=0
add ref level to problem
MoFEM::CoreInterface::modify_problem_add_finite_element
virtual MoFEMErrorCode modify_problem_add_finite_element(const std::string name_problem, const std::string &fe_name)=0
add finite element to problem, this add entities assigned to finite element to a particular problem
mesh_file_name
char mesh_file_name[255]
Definition mesh_smoothing.cpp:22
EigenMatrix::Vec
const FTensor::Tensor2< T, Dim, Dim > Vec
Definition MatrixFunction.hpp:64
MoFEM::Types::BitRefLevel
std::bitset< BITREFLEVEL_SIZE > BitRefLevel
Bit structure attached to each entity identifying to what mesh entity is attached.
Definition Types.hpp:40
MoFEM::PetscOptionsGetInt
PetscErrorCode PetscOptionsGetInt(PetscOptions *, const char pre[], const char name[], PetscInt *ivalue, PetscBool *set)
Definition DeprecatedPetsc.hpp:142
MoFEM::PetscOptionsGetString
PetscErrorCode PetscOptionsGetString(PetscOptions *, const char pre[], const char name[], char str[], size_t size, PetscBool *set)
Definition DeprecatedPetsc.hpp:172
MoFEM::BitRefManager
Managing BitRefLevels.
Definition BitRefManager.hpp:21
MoFEM::CoreInterface::build_adjacencies
virtual MoFEMErrorCode build_adjacencies(const Range &ents, int verb=DEFAULT_VERBOSITY)=0
build adjacencies
MoFEM::CoreInterface::add_field
virtual MoFEMErrorCode add_field(const std::string name, const FieldSpace space, const FieldApproximationBase base, const FieldCoefficientsNumber nb_of_coefficients, const TagType tag_type=MB_TAG_SPARSE, const enum MoFEMTypes bh=MF_EXCL, int verb=DEFAULT_VERBOSITY)=0
Add field.
MoFEM::CoreTmp< 0 >
Core (interface) class.
Definition Core.hpp:82
MoFEM::CoreTmp< 0 >::Initialize
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
MoFEM::CoreTmp< 0 >::Finalize
static MoFEMErrorCode Finalize()
Checks for options to be called at the conclusion of the program.
Definition Core.cpp:118
MoFEM::DeprecatedCoreInterface
Deprecated interface functions.
Definition DeprecatedCoreInterface.hpp:16
MoFEM::MatrixManager
Matrix manager is used to build and partition problems.
Definition MatrixManager.hpp:21
MoFEM::ProblemsManager
Problem manager is used to build and partition problems.
Definition ProblemsManager.hpp:133
MoFEM::UnknownInterface::getInterface
MoFEMErrorCode getInterface(IFACE *&iface) const
Get interface reference to pointer of interface.
Definition UnknownInterface.hpp:93
MoFEM::VecManager
Vector manager is used to create vectors \mofem_vectors.
Definition VecManager.hpp:23
NonlinearElasticElement::FunctionsToCalculatePiolaKirchhoffI
Implementation of elastic (non-linear) St. Kirchhoff equation.
Definition NonLinearElasticElement.hpp:130
NonlinearElasticElement
structure grouping operators and data used for calculation of nonlinear elastic element
Definition HookeElement.hpp:27
help
static char help[]
Definition nonlinear_elastic.cpp:20

Variable Documentation

◆ help

char help[] = "...\n\n"
static

Definition at line 20 of file nonlinear_elastic.cpp.

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