PlateProblem< ELEMENT > Class Template Reference
+ Inheritance diagram for PlateProblem< ELEMENT >:

Public Member Functions

 PlateProblem (const unsigned &nx, const unsigned &ny, const double &lx, const double &ly)
 Constructor. More...
 
FlatPlateMesh< ELEMENT > * mesh_pt ()
 Overload Access function for the mesh. More...
 
void actions_after_newton_solve ()
 Actions after solve empty. More...
 
void actions_before_newton_solve ()
 Actions before solve empty. More...
 
- Public Member Functions inherited from oomph::Problem
virtual void debug_hook_fct (const unsigned &i)
 
void set_analytic_dparameter (double *const &parameter_pt)
 
void unset_analytic_dparameter (double *const &parameter_pt)
 
bool is_dparameter_calculated_analytically (double *const &parameter_pt)
 
void set_analytic_hessian_products ()
 
void unset_analytic_hessian_products ()
 
bool are_hessian_products_calculated_analytically ()
 
void set_pinned_values_to_zero ()
 
bool distributed () const
 
virtual void actions_before_adapt ()
 
virtual void actions_after_adapt ()
 Actions that are to be performed after a mesh adaptation. More...
 
OomphCommunicatorcommunicator_pt ()
 access function to the oomph-lib communicator More...
 
const OomphCommunicatorcommunicator_pt () const
 access function to the oomph-lib communicator, const version More...
 
 Problem ()
 
 Problem (const Problem &dummy)=delete
 Broken copy constructor. More...
 
void operator= (const Problem &)=delete
 Broken assignment operator. More...
 
virtual ~Problem ()
 Virtual destructor to clean up memory. More...
 
Mesh *& mesh_pt ()
 Return a pointer to the global mesh. More...
 
Mesh *const & mesh_pt () const
 Return a pointer to the global mesh (const version) More...
 
Mesh *& mesh_pt (const unsigned &imesh)
 
Mesh *const & mesh_pt (const unsigned &imesh) const
 Return a pointer to the i-th submesh (const version) More...
 
unsigned nsub_mesh () const
 Return number of submeshes. More...
 
unsigned add_sub_mesh (Mesh *const &mesh_pt)
 
void flush_sub_meshes ()
 
void build_global_mesh ()
 
void rebuild_global_mesh ()
 
LinearSolver *& linear_solver_pt ()
 Return a pointer to the linear solver object. More...
 
LinearSolver *const & linear_solver_pt () const
 Return a pointer to the linear solver object (const version) More...
 
LinearSolver *& mass_matrix_solver_for_explicit_timestepper_pt ()
 
LinearSolvermass_matrix_solver_for_explicit_timestepper_pt () const
 
EigenSolver *& eigen_solver_pt ()
 Return a pointer to the eigen solver object. More...
 
EigenSolver *const & eigen_solver_pt () const
 Return a pointer to the eigen solver object (const version) More...
 
Time *& time_pt ()
 Return a pointer to the global time object. More...
 
Timetime_pt () const
 Return a pointer to the global time object (const version). More...
 
doubletime ()
 Return the current value of continuous time. More...
 
double time () const
 Return the current value of continuous time (const version) More...
 
TimeStepper *& time_stepper_pt ()
 
const TimeSteppertime_stepper_pt () const
 
TimeStepper *& time_stepper_pt (const unsigned &i)
 Return a pointer to the i-th timestepper. More...
 
ExplicitTimeStepper *& explicit_time_stepper_pt ()
 Return a pointer to the explicit timestepper. More...
 
unsigned long set_timestepper_for_all_data (TimeStepper *const &time_stepper_pt, const bool &preserve_existing_data=false)
 
virtual void shift_time_values ()
 Shift all values along to prepare for next timestep. More...
 
AssemblyHandler *& assembly_handler_pt ()
 Return a pointer to the assembly handler object. More...
 
AssemblyHandler *const & assembly_handler_pt () const
 Return a pointer to the assembly handler object (const version) More...
 
doubleminimum_dt ()
 Access function to min timestep in adaptive timestepping. More...
 
doublemaximum_dt ()
 Access function to max timestep in adaptive timestepping. More...
 
unsignedmax_newton_iterations ()
 Access function to max Newton iterations before giving up. More...
 
void problem_is_nonlinear (const bool &prob_lin)
 Access function to Problem_is_nonlinear. More...
 
doublemax_residuals ()
 
booltime_adaptive_newton_crash_on_solve_fail ()
 Access function for Time_adaptive_newton_crash_on_solve_fail. More...
 
doublenewton_solver_tolerance ()
 
void add_time_stepper_pt (TimeStepper *const &time_stepper_pt)
 
void set_explicit_time_stepper_pt (ExplicitTimeStepper *const &explicit_time_stepper_pt)
 
void initialise_dt (const double &dt)
 
void initialise_dt (const Vector< double > &dt)
 
Data *& global_data_pt (const unsigned &i)
 Return a pointer to the the i-th global data object. More...
 
void add_global_data (Data *const &global_data_pt)
 
void flush_global_data ()
 
LinearAlgebraDistribution *const & dof_distribution_pt () const
 Return the pointer to the dof distribution (read-only) More...
 
unsigned long ndof () const
 Return the number of dofs. More...
 
unsigned ntime_stepper () const
 Return the number of time steppers. More...
 
unsigned nglobal_data () const
 Return the number of global data values. More...
 
unsigned self_test ()
 Self-test: Check meshes and global data. Return 0 for OK. More...
 
void enable_store_local_dof_pt_in_elements ()
 
void disable_store_local_dof_pt_in_elements ()
 
unsigned long assign_eqn_numbers (const bool &assign_local_eqn_numbers=true)
 
void describe_dofs (std::ostream &out= *(oomph_info.stream_pt())) const
 
void enable_discontinuous_formulation ()
 
void disable_discontinuous_formulation ()
 
void get_dofs (DoubleVector &dofs) const
 
void get_dofs (const unsigned &t, DoubleVector &dofs) const
 Return vector of the t'th history value of all dofs. More...
 
void set_dofs (const DoubleVector &dofs)
 Set the values of the dofs. More...
 
void set_dofs (const unsigned &t, DoubleVector &dofs)
 Set the history values of the dofs. More...
 
void set_dofs (const unsigned &t, Vector< double * > &dof_pt)
 
void add_to_dofs (const double &lambda, const DoubleVector &increment_dofs)
 Add lambda x incremenet_dofs[l] to the l-th dof. More...
 
doubleglobal_dof_pt (const unsigned &i)
 
doubledof (const unsigned &i)
 i-th dof in the problem More...
 
double dof (const unsigned &i) const
 i-th dof in the problem (const version) More...
 
double *& dof_pt (const unsigned &i)
 Pointer to i-th dof in the problem. More...
 
doubledof_pt (const unsigned &i) const
 Pointer to i-th dof in the problem (const version) More...
 
virtual void get_inverse_mass_matrix_times_residuals (DoubleVector &Mres)
 
virtual void get_dvaluesdt (DoubleVector &f)
 
virtual void get_residuals (DoubleVector &residuals)
 Get the total residuals Vector for the problem. More...
 
virtual void get_jacobian (DoubleVector &residuals, DenseDoubleMatrix &jacobian)
 
virtual void get_jacobian (DoubleVector &residuals, CRDoubleMatrix &jacobian)
 
virtual void get_jacobian (DoubleVector &residuals, CCDoubleMatrix &jacobian)
 
virtual void get_jacobian (DoubleVector &residuals, SumOfMatrices &jacobian)
 
void get_fd_jacobian (DoubleVector &residuals, DenseMatrix< double > &jacobian)
 Get the full Jacobian by finite differencing. More...
 
void get_derivative_wrt_global_parameter (double *const &parameter_pt, DoubleVector &result)
 
void get_hessian_vector_products (DoubleVectorWithHaloEntries const &Y, Vector< DoubleVectorWithHaloEntries > const &C, Vector< DoubleVectorWithHaloEntries > &product)
 
void solve_eigenproblem (const unsigned &n_eval, Vector< std::complex< double >> &eigenvalue, Vector< DoubleVector > &eigenvector, const bool &steady=true)
 Solve the eigenproblem. More...
 
void solve_eigenproblem (const unsigned &n_eval, Vector< std::complex< double >> &eigenvalue, const bool &steady=true)
 
virtual void get_eigenproblem_matrices (CRDoubleMatrix &mass_matrix, CRDoubleMatrix &main_matrix, const double &shift=0.0)
 
void assign_eigenvector_to_dofs (DoubleVector &eigenvector)
 Assign the eigenvector passed to the function to the dofs. More...
 
void add_eigenvector_to_dofs (const double &epsilon, const DoubleVector &eigenvector)
 
void store_current_dof_values ()
 Store the current values of the degrees of freedom. More...
 
void restore_dof_values ()
 Restore the stored values of the degrees of freedom. More...
 
void enable_jacobian_reuse ()
 
void disable_jacobian_reuse ()
 Disable recycling of Jacobian in Newton iteration. More...
 
bool jacobian_reuse_is_enabled ()
 Is recycling of Jacobian in Newton iteration enabled? More...
 
booluse_predictor_values_as_initial_guess ()
 
void newton_solve ()
 Use Newton method to solve the problem. More...
 
void enable_globally_convergent_newton_method ()
 enable globally convergent Newton method More...
 
void disable_globally_convergent_newton_method ()
 disable globally convergent Newton method More...
 
void newton_solve (unsigned const &max_adapt)
 
void steady_newton_solve (unsigned const &max_adapt=0)
 
void copy (Problem *orig_problem_pt)
 
virtual Problemmake_copy ()
 
virtual void read (std::ifstream &restart_file, bool &unsteady_restart)
 
virtual void read (std::ifstream &restart_file)
 
virtual void dump (std::ofstream &dump_file) const
 
void dump (const std::string &dump_file_name) const
 
void delete_all_external_storage ()
 
virtual void symmetrise_eigenfunction_for_adaptive_pitchfork_tracking ()
 
doublebifurcation_parameter_pt () const
 
void get_bifurcation_eigenfunction (Vector< DoubleVector > &eigenfunction)
 
void activate_fold_tracking (double *const &parameter_pt, const bool &block_solve=true)
 
void activate_bifurcation_tracking (double *const &parameter_pt, const DoubleVector &eigenvector, const bool &block_solve=true)
 
void activate_bifurcation_tracking (double *const &parameter_pt, const DoubleVector &eigenvector, const DoubleVector &normalisation, const bool &block_solve=true)
 
void activate_pitchfork_tracking (double *const &parameter_pt, const DoubleVector &symmetry_vector, const bool &block_solve=true)
 
void activate_hopf_tracking (double *const &parameter_pt, const bool &block_solve=true)
 
void activate_hopf_tracking (double *const &parameter_pt, const double &omega, const DoubleVector &null_real, const DoubleVector &null_imag, const bool &block_solve=true)
 
void deactivate_bifurcation_tracking ()
 
void reset_assembly_handler_to_default ()
 Reset the system to the standard non-augemented state. More...
 
double arc_length_step_solve (double *const &parameter_pt, const double &ds, const unsigned &max_adapt=0)
 
double arc_length_step_solve (Data *const &data_pt, const unsigned &data_index, const double &ds, const unsigned &max_adapt=0)
 
void reset_arc_length_parameters ()
 
intsign_of_jacobian ()
 
void explicit_timestep (const double &dt, const bool &shift_values=true)
 Take an explicit timestep of size dt. More...
 
void unsteady_newton_solve (const double &dt)
 
void unsteady_newton_solve (const double &dt, const bool &shift_values)
 
void unsteady_newton_solve (const double &dt, const unsigned &max_adapt, const bool &first, const bool &shift=true)
 
double doubly_adaptive_unsteady_newton_solve (const double &dt, const double &epsilon, const unsigned &max_adapt, const bool &first, const bool &shift=true)
 
double doubly_adaptive_unsteady_newton_solve (const double &dt, const double &epsilon, const unsigned &max_adapt, const unsigned &suppress_resolve_after_spatial_adapt_flag, const bool &first, const bool &shift=true)
 
double adaptive_unsteady_newton_solve (const double &dt_desired, const double &epsilon)
 
double adaptive_unsteady_newton_solve (const double &dt_desired, const double &epsilon, const bool &shift_values)
 
void assign_initial_values_impulsive ()
 
void assign_initial_values_impulsive (const double &dt)
 
void calculate_predictions ()
 Calculate predictions. More...
 
void enable_mass_matrix_reuse ()
 
void disable_mass_matrix_reuse ()
 
bool mass_matrix_reuse_is_enabled ()
 Return whether the mass matrix is being reused. More...
 
void refine_uniformly (const Vector< unsigned > &nrefine_for_mesh)
 
void refine_uniformly (const Vector< unsigned > &nrefine_for_mesh, DocInfo &doc_info)
 
void refine_uniformly_and_prune (const Vector< unsigned > &nrefine_for_mesh)
 
void refine_uniformly_and_prune (const Vector< unsigned > &nrefine_for_mesh, DocInfo &doc_info)
 
void refine_uniformly (DocInfo &doc_info)
 
void refine_uniformly_and_prune (DocInfo &doc_info)
 
void refine_uniformly ()
 
void refine_uniformly (const unsigned &i_mesh, DocInfo &doc_info)
 Do uniform refinement for submesh i_mesh with documentation. More...
 
void refine_uniformly (const unsigned &i_mesh)
 Do uniform refinement for submesh i_mesh without documentation. More...
 
void p_refine_uniformly (const Vector< unsigned > &nrefine_for_mesh)
 
void p_refine_uniformly (const Vector< unsigned > &nrefine_for_mesh, DocInfo &doc_info)
 
void p_refine_uniformly_and_prune (const Vector< unsigned > &nrefine_for_mesh)
 
void p_refine_uniformly_and_prune (const Vector< unsigned > &nrefine_for_mesh, DocInfo &doc_info)
 
void p_refine_uniformly (DocInfo &doc_info)
 
void p_refine_uniformly_and_prune (DocInfo &doc_info)
 
void p_refine_uniformly ()
 
void p_refine_uniformly (const unsigned &i_mesh, DocInfo &doc_info)
 Do uniform p-refinement for submesh i_mesh with documentation. More...
 
void p_refine_uniformly (const unsigned &i_mesh)
 Do uniform p-refinement for submesh i_mesh without documentation. More...
 
void refine_selected_elements (const Vector< unsigned > &elements_to_be_refined)
 
void refine_selected_elements (const Vector< RefineableElement * > &elements_to_be_refined_pt)
 
void refine_selected_elements (const unsigned &i_mesh, const Vector< unsigned > &elements_to_be_refined)
 
void refine_selected_elements (const unsigned &i_mesh, const Vector< RefineableElement * > &elements_to_be_refined_pt)
 
void refine_selected_elements (const Vector< Vector< unsigned >> &elements_to_be_refined)
 
void refine_selected_elements (const Vector< Vector< RefineableElement * >> &elements_to_be_refined_pt)
 
void p_refine_selected_elements (const Vector< unsigned > &elements_to_be_refined)
 
void p_refine_selected_elements (const Vector< PRefineableElement * > &elements_to_be_refined_pt)
 
void p_refine_selected_elements (const unsigned &i_mesh, const Vector< unsigned > &elements_to_be_refined)
 
void p_refine_selected_elements (const unsigned &i_mesh, const Vector< PRefineableElement * > &elements_to_be_refined_pt)
 
void p_refine_selected_elements (const Vector< Vector< unsigned >> &elements_to_be_refined)
 
void p_refine_selected_elements (const Vector< Vector< PRefineableElement * >> &elements_to_be_refined_pt)
 
unsigned unrefine_uniformly ()
 
unsigned unrefine_uniformly (const unsigned &i_mesh)
 
void p_unrefine_uniformly (DocInfo &doc_info)
 
void p_unrefine_uniformly (const unsigned &i_mesh, DocInfo &doc_info)
 Do uniform p-unrefinement for submesh i_mesh without documentation. More...
 
void adapt (unsigned &n_refined, unsigned &n_unrefined)
 
void adapt ()
 
void p_adapt (unsigned &n_refined, unsigned &n_unrefined)
 
void p_adapt ()
 
void adapt_based_on_error_estimates (unsigned &n_refined, unsigned &n_unrefined, Vector< Vector< double >> &elemental_error)
 
void adapt_based_on_error_estimates (Vector< Vector< double >> &elemental_error)
 
void get_all_error_estimates (Vector< Vector< double >> &elemental_error)
 
void doc_errors (DocInfo &doc_info)
 Get max and min error for all elements in submeshes. More...
 
void doc_errors ()
 Get max and min error for all elements in submeshes. More...
 
void enable_info_in_newton_solve ()
 
void disable_info_in_newton_solve ()
 Disable the output of information when in the newton solver. More...
 
- Public Member Functions inherited from oomph::ExplicitTimeSteppableObject
 ExplicitTimeSteppableObject ()
 Empty constructor. More...
 
 ExplicitTimeSteppableObject (const ExplicitTimeSteppableObject &)=delete
 Broken copy constructor. More...
 
void operator= (const ExplicitTimeSteppableObject &)=delete
 Broken assignment operator. More...
 
virtual ~ExplicitTimeSteppableObject ()
 Empty destructor. More...
 
virtual void actions_before_explicit_stage ()
 
virtual void actions_after_explicit_stage ()
 

Private Attributes

GeomObjectUndeformed_midplane_pt
 Pointer to GeomObject that specifies the undeformed midplane. More...
 
NodeTrace_node_pt
 First trace node. More...
 
NodeTrace_node2_pt
 Second trace node. More...
 
unsigned Nshell
 Number of shell elements. More...
 

Additional Inherited Members

- Public Types inherited from oomph::Problem
typedef void(* SpatialErrorEstimatorFctPt) (Mesh *&mesh_pt, Vector< double > &elemental_error)
 Function pointer for spatial error estimator. More...
 
typedef void(* SpatialErrorEstimatorWithDocFctPt) (Mesh *&mesh_pt, Vector< double > &elemental_error, DocInfo &doc_info)
 Function pointer for spatial error estimator with doc. More...
 
- Public Attributes inherited from oomph::Problem
bool Shut_up_in_newton_solve
 
- Static Public Attributes inherited from oomph::Problem
static bool Suppress_warning_about_actions_before_read_unstructured_meshes
 
- Protected Types inherited from oomph::Problem
enum  Assembly_method {
  Perform_assembly_using_vectors_of_pairs , Perform_assembly_using_two_vectors , Perform_assembly_using_maps , Perform_assembly_using_lists ,
  Perform_assembly_using_two_arrays
}
 Enumerated flags to determine which sparse assembly method is used. More...
 
- Protected Member Functions inherited from oomph::Problem
unsigned setup_element_count_per_dof ()
 
virtual void sparse_assemble_row_or_column_compressed (Vector< int * > &column_or_row_index, Vector< int * > &row_or_column_start, Vector< double * > &value, Vector< unsigned > &nnz, Vector< double * > &residual, bool compressed_row_flag)
 
virtual void actions_before_newton_convergence_check ()
 
virtual void actions_before_newton_step ()
 
virtual void actions_after_newton_step ()
 
virtual void actions_before_implicit_timestep ()
 
virtual void actions_after_implicit_timestep ()
 
virtual void actions_after_implicit_timestep_and_error_estimation ()
 
virtual void actions_before_explicit_timestep ()
 Actions that should be performed before each explicit time step. More...
 
virtual void actions_after_explicit_timestep ()
 Actions that should be performed after each explicit time step. More...
 
virtual void actions_before_read_unstructured_meshes ()
 
virtual void actions_after_read_unstructured_meshes ()
 
virtual void actions_after_change_in_global_parameter (double *const &parameter_pt)
 
virtual void actions_after_change_in_bifurcation_parameter ()
 
virtual void actions_after_parameter_increase (double *const &parameter_pt)
 
doubledof_derivative (const unsigned &i)
 
doubledof_current (const unsigned &i)
 
virtual void set_initial_condition ()
 
virtual double global_temporal_error_norm ()
 
unsigned newton_solve_continuation (double *const &parameter_pt)
 
unsigned newton_solve_continuation (double *const &parameter_pt, DoubleVector &z)
 
void calculate_continuation_derivatives (double *const &parameter_pt)
 
void calculate_continuation_derivatives (const DoubleVector &z)
 
void calculate_continuation_derivatives_fd (double *const &parameter_pt)
 
bool does_pointer_correspond_to_problem_data (double *const &parameter_pt)
 
void set_consistent_pinned_values_for_continuation ()
 
- Protected Attributes inherited from oomph::Problem
Vector< Problem * > Copy_of_problem_pt
 
std::map< double *, boolCalculate_dparameter_analytic
 
bool Calculate_hessian_products_analytic
 
LinearAlgebraDistributionDof_distribution_pt
 
Vector< double * > Dof_pt
 Vector of pointers to dofs. More...
 
DoubleVectorWithHaloEntries Element_count_per_dof
 
double Relaxation_factor
 
double Newton_solver_tolerance
 
unsigned Max_newton_iterations
 Maximum number of Newton iterations. More...
 
unsigned Nnewton_iter_taken
 
Vector< doubleMax_res
 Maximum residuals at start and after each newton iteration. More...
 
double Max_residuals
 
bool Time_adaptive_newton_crash_on_solve_fail
 
bool Jacobian_reuse_is_enabled
 Is re-use of Jacobian in Newton iteration enabled? Default: false. More...
 
bool Jacobian_has_been_computed
 
bool Problem_is_nonlinear
 
bool Pause_at_end_of_sparse_assembly
 
bool Doc_time_in_distribute
 
unsigned Sparse_assembly_method
 
unsigned Sparse_assemble_with_arrays_initial_allocation
 
unsigned Sparse_assemble_with_arrays_allocation_increment
 
Vector< Vector< unsigned > > Sparse_assemble_with_arrays_previous_allocation
 
double Numerical_zero_for_sparse_assembly
 
double FD_step_used_in_get_hessian_vector_products
 
bool Mass_matrix_reuse_is_enabled
 
bool Mass_matrix_has_been_computed
 
bool Discontinuous_element_formulation
 
double Minimum_dt
 Minimum desired dt: if dt falls below this value, exit. More...
 
double Maximum_dt
 Maximum desired dt. More...
 
double DTSF_max_increase
 
double DTSF_min_decrease
 
double Minimum_dt_but_still_proceed
 
bool Scale_arc_length
 Boolean to control whether arc-length should be scaled. More...
 
double Desired_proportion_of_arc_length
 Proportion of the arc-length to taken by the parameter. More...
 
double Theta_squared
 
int Sign_of_jacobian
 Storage for the sign of the global Jacobian. More...
 
double Continuation_direction
 
double Parameter_derivative
 Storage for the derivative of the global parameter wrt arc-length. More...
 
double Parameter_current
 Storage for the present value of the global parameter. More...
 
bool Use_continuation_timestepper
 Boolean to control original or new storage of dof stuff. More...
 
unsigned Dof_derivative_offset
 
unsigned Dof_current_offset
 
Vector< doubleDof_derivative
 Storage for the derivative of the problem variables wrt arc-length. More...
 
Vector< doubleDof_current
 Storage for the present values of the variables. More...
 
double Ds_current
 Storage for the current step value. More...
 
unsigned Desired_newton_iterations_ds
 
double Minimum_ds
 Minimum desired value of arc-length. More...
 
bool Bifurcation_detection
 Boolean to control bifurcation detection via determinant of Jacobian. More...
 
bool Bisect_to_find_bifurcation
 Boolean to control wheter bisection is used to located bifurcation. More...
 
bool First_jacobian_sign_change
 Boolean to indicate whether a sign change has occured in the Jacobian. More...
 
bool Arc_length_step_taken
 Boolean to indicate whether an arc-length step has been taken. More...
 
bool Use_finite_differences_for_continuation_derivatives
 
OomphCommunicatorCommunicator_pt
 The communicator for this problem. More...
 
bool Always_take_one_newton_step
 
double Timestep_reduction_factor_after_nonconvergence
 
bool Keep_temporal_error_below_tolerance
 
- Static Protected Attributes inherited from oomph::Problem
static ContinuationStorageScheme Continuation_time_stepper
 Storage for the single static continuation timestorage object. More...
 

Constructor & Destructor Documentation

◆ PlateProblem()

template<class ELEMENT >
PlateProblem< ELEMENT >::PlateProblem ( const unsigned nx,
const unsigned ny,
const double lx,
const double ly 
)

Constructor.

359 {
360  //Create the undeformed midplane object
362 
363  //Now create the mesh
364  Problem::mesh_pt() = new FlatPlateMesh<ELEMENT>(nx,ny,lx,ly);
365 
366  // Store number of genuine shell elements
367  Nshell=mesh_pt()->nelement();
368 
369  //Set the undeformed positions in the mesh
370  mesh_pt()->assign_undeformed_positions(Undeformed_midplane_pt);
371 
372  //Reorder the elements, since I know what's best for them....
373  mesh_pt()->element_reorder();
374 
375  // Loop over all nodes and suppress displacements in y (=1) direction
376  //-------------------------------------------------------------------
377  unsigned n_node = mesh_pt()->nnode();
378  for (unsigned j=0;j<n_node;j++)
379  {
380  SolidNode* nod_pt=mesh_pt()->node_pt(j);
381 
382  //pin y-displacement
383  nod_pt->pin_position(1);
384 
385  // ...for all s_0:
386  nod_pt->pin_position(1,1);
387 
388  // ...for all s_1:
389  nod_pt->pin_position(2,1);
390 
391  // ...for all s_0, s_1:
392  nod_pt->pin_position(3,1);
393  }
394 
395 
396  //Loop over the nodes at the ends of the plate and pin the positions
397  //-----------------------------------------------------------------
398  // (All constraints apply at all nodes on boundaries 1 and 3)
399  //-----------------------------------------------------------
400  unsigned n_node_at_ends = mesh_pt()->nboundary_node(1);
401  for(unsigned j=0;j<n_node_at_ends;j++)
402  {
403 
404  // Loop over all three displacement components
405  for (unsigned i=0;i<3;i++)
406  {
407  // Pin positions for all s_1
408  mesh_pt()->boundary_node_pt(1,j)->pin_position(i);
409  mesh_pt()->boundary_node_pt(3,j)->pin_position(i);
410 
411  // ...implying that dr/ds_1=0, too: [pin_position() takes type (2) and
412  // direction (i)]
413  mesh_pt()->boundary_node_pt(1,j)->pin_position(2,i);
414  mesh_pt()->boundary_node_pt(3,j)->pin_position(2,i);
415  }
416 
417  }
418 
419 
420  // Setup displacement control
421  //---------------------------
422 
423  // Choose element in which displacement control is applied: This
424  // one is located about halfway along the tube -- remember that
425  // we've renumbered the elements!
426  unsigned nel_ctrl=0;
427  Vector<double> s_displ_control(2);
428 
429  // Even/odd number of elements in axial direction
430  if (nx%2==1)
431  {
432  nel_ctrl=unsigned(floor(0.5*double(nx))+1.0)*ny-1;
433  s_displ_control[0]=0.0;
434  s_displ_control[1]=1.0;
435  }
436  else
437  {
438  nel_ctrl=unsigned(floor(0.5*double(nx))+1.0)*ny-1;
439  s_displ_control[0]=-1.0;
440  s_displ_control[1]=1.0;
441  }
442 
443  // Controlled element
444  SolidFiniteElement* controlled_element_pt=
445  dynamic_cast<ELEMENT*>(mesh_pt()->element_pt(nel_ctrl));
446 
447 
448  // Fix the displacement in the z (2) direction...
449  unsigned controlled_direction=2;
450 
451  // Pointer to displacement control element
452  DisplacementControlElement* displ_control_el_pt;
453 
454  // Build displacement control element
455  displ_control_el_pt=
456  new DisplacementControlElement(controlled_element_pt,
457  s_displ_control,
458  controlled_direction,
460 
461 
462  // Doc control point
463  Vector<double> xi(2);
464  Vector<double> x(3);
465  controlled_element_pt->interpolated_xi(s_displ_control,xi);
466  controlled_element_pt->interpolated_x(s_displ_control,x);
467  std::cout << std::endl;
468  std::cout << "Controlled element: " << nel_ctrl << std::endl;
469  std::cout << "Displacement control applied at xi = ("
470  << xi[0] << ", " << xi[1] << ")" << std::endl;
471  std::cout << "Corresponding to x = ("
472  << x[0] << ", " << x[1] << ", " << x[2] << ")" << std::endl;
473 
474 
475  // The constructor of the DisplacementControlElement has created
476  // a new Data object whose one-and-only value contains the
477  // adjustable load: Use this Data object in the load function:
478  Global_Physical_Variables::Pext_data_pt=displ_control_el_pt->
479  displacement_control_load_pt();
480 
481  // Add the displacement-control element to the mesh
482  mesh_pt()->add_element_pt(displ_control_el_pt);
483 
484 
485 
486  // Complete build of shell elements
487  //---------------------------------
488 
489  //Find number of shell elements in mesh
490  unsigned n_element = nx*ny;
491 
492  //Explicit pointer to first element in the mesh
493  ELEMENT* first_el_pt = dynamic_cast<ELEMENT*>(mesh_pt()->element_pt(0));
494 
495  //Loop over the elements
496  for(unsigned e=0;e<n_element;e++)
497  {
498  //Cast to a shell element
499  ELEMENT *el_pt = dynamic_cast<ELEMENT*>(mesh_pt()->element_pt(e));
500 
501  //Set the load function
502  el_pt->load_vector_fct_pt() = & Global_Physical_Variables::press_load;
503 
504  //Set the undeformed surface
505  el_pt->undeformed_midplane_pt() = Undeformed_midplane_pt;
506 
507  // Set Nu
508  el_pt->nu_pt() = &Global_Physical_Variables::Nu;
509 
510  // Set H
511  el_pt->h_pt() = &Global_Physical_Variables::H;
512 
513  //The external pressure is external data for all elements
514  el_pt->add_external_data(Global_Physical_Variables::Pext_data_pt);
515 
516  // set pre-stress
517  el_pt->set_prestress_pt(0,0,&Global_Physical_Variables::Sigma0);
518 
519  //Pre-compute the second derivatives wrt Lagrangian coordinates
520  //for the first element only
521  if(e==0)
522  {
523  el_pt->pre_compute_d2shape_lagrangian_at_knots();
524  }
525 
526  //Otherwise set the values to be the same as those in the first element
527  //this is OK because the Lagrangian mesh is uniform.
528  else
529  {
530  el_pt->set_dshape_lagrangian_stored_from_element(first_el_pt);
531  }
532  }
533 
534  //Set pointers to two trace nodes, used for output
535  Trace_node_pt = mesh_pt()->finite_element_pt(2*ny-1)->node_pt(3);
536  Trace_node2_pt = mesh_pt()->finite_element_pt(ny)->node_pt(1);
537 
538  // Do equation numbering
539  cout << std::endl;
540  cout << "# of dofs " << assign_eqn_numbers() << std::endl;
541  cout << std::endl;
542 
543 }
int i
Definition: BiCGSTAB_step_by_step.cpp:9
Array< double, 1, 3 > e(1./3., 0.5, 2.)
Definition: plate.cc:145
Flat plate in x-y plane.
Definition: plate.cc:51
Node * Trace_node_pt
First trace node.
Definition: plate.cc:341
unsigned Nshell
Number of shell elements.
Definition: plate.cc:347
FlatPlateMesh< ELEMENT > * mesh_pt()
Overload Access function for the mesh.
Definition: plate.cc:324
GeomObject * Undeformed_midplane_pt
Pointer to GeomObject that specifies the undeformed midplane.
Definition: plate.cc:338
Node * Trace_node2_pt
Second trace node.
Definition: plate.cc:344
Definition: displacement_control_element.h:106
virtual double interpolated_x(const Vector< double > &s, const unsigned &i) const
Return FE interpolated coordinate x[i] at local coordinate s.
Definition: elements.cc:3962
unsigned long assign_eqn_numbers(const bool &assign_local_eqn_numbers=true)
Definition: problem.cc:1989
Definition: elements.h:3561
virtual double interpolated_xi(const Vector< double > &s, const unsigned &i) const
Definition: elements.cc:7104
Definition: nodes.h:1686
void pin_position(const unsigned &i)
Pin the nodal position.
Definition: nodes.h:1816
EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC bfloat16 floor(const bfloat16 &a)
Definition: BFloat16.h:643
double Nu
Poisson's ratio.
Definition: TwenteMeshGluing.cpp:71
double Sigma0
2nd Piola Kirchhoff pre-stress
Definition: tensioned_string.cc:46
void press_load(const Vector< double > &xi, const Vector< double > &x, const Vector< double > &N, Vector< double > &load)
Load function: Perturbation pressure to force non-axisymmetric deformation.
Definition: steady_ring.cc:64
double Prescribed_z
Prescribed position of control point.
Definition: plate.cc:274
Data * Pext_data_pt
Pointer to pressure load.
Definition: steady_ring.cc:60
double H
Nondim thickness.
Definition: steady_ring.cc:50
const double ly
Definition: ConstraintElementsUnitTest.cpp:34
const double lx
Definition: ConstraintElementsUnitTest.cpp:33
const unsigned nx
Definition: ConstraintElementsUnitTest.cpp:30
const unsigned ny
Definition: ConstraintElementsUnitTest.cpp:31
list x
Definition: plotDoE.py:28
std::ptrdiff_t j
Definition: tut_arithmetic_redux_minmax.cpp:2

References e(), Eigen::bfloat16_impl::floor(), Global_Physical_Variables::H, i, oomph::FiniteElement::interpolated_x(), oomph::SolidFiniteElement::interpolated_xi(), j, Mesh_Parameters::lx, Mesh_Parameters::ly, Global_Physical_Variables::Nu, Mesh_Parameters::nx, Mesh_Parameters::ny, Global_Physical_Variables::Pext_data_pt, oomph::SolidNode::pin_position(), Global_Physical_Variables::Prescribed_z, Global_Physical_Variables::press_load(), Global_Physical_Variables::Sigma0, and plotDoE::x.

Member Function Documentation

◆ actions_after_newton_solve()

template<class ELEMENT >
void PlateProblem< ELEMENT >::actions_after_newton_solve ( )
inlinevirtual

Actions after solve empty.

Reimplemented from oomph::Problem.

330 {}

◆ actions_before_newton_solve()

template<class ELEMENT >
void PlateProblem< ELEMENT >::actions_before_newton_solve ( )
inlinevirtual

Actions before solve empty.

Reimplemented from oomph::Problem.

333 {}

◆ mesh_pt()

template<class ELEMENT >
FlatPlateMesh<ELEMENT>* PlateProblem< ELEMENT >::mesh_pt ( )
inline

Overload Access function for the mesh.

325  {return
326  dynamic_cast<FlatPlateMesh<ELEMENT>*>(Problem::mesh_pt());
327  }

Member Data Documentation

◆ Nshell

template<class ELEMENT >
unsigned PlateProblem< ELEMENT >::Nshell
private

Number of shell elements.

◆ Trace_node2_pt

template<class ELEMENT >
Node* PlateProblem< ELEMENT >::Trace_node2_pt
private

Second trace node.

◆ Trace_node_pt

template<class ELEMENT >
Node* PlateProblem< ELEMENT >::Trace_node_pt
private

First trace node.

◆ Undeformed_midplane_pt

template<class ELEMENT >
GeomObject* PlateProblem< ELEMENT >::Undeformed_midplane_pt
private

Pointer to GeomObject that specifies the undeformed midplane.


The documentation for this class was generated from the following file: