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...
 
OomphCommunicator * communicator_pt ()
 access function to the oomph-lib communicator More...
 
const OomphCommunicator * communicator_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 ()
 
LinearSolver * mass_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...
 
Time * time_pt () const
 Return a pointer to the global time object (const version). More...
 
double & time ()
 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 TimeStepper * time_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...
 
double & minimum_dt ()
 Access function to min timestep in adaptive timestepping. More...
 
double & maximum_dt ()
 Access function to max timestep in adaptive timestepping. More...
 
unsigned & max_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...
 
double & max_residuals ()
 
bool & time_adaptive_newton_crash_on_solve_fail ()
 Access function for Time_adaptive_newton_crash_on_solve_fail. More...
 
double & newton_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...
 
double * global_dof_pt (const unsigned &i)
 
double & dof (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...
 
double * dof_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...
 
bool & use_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 Problem * make_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 ()
 
double * bifurcation_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 ()
 
int & sign_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

GeomObject * Undeformed_midplane_pt
 Pointer to GeomObject that specifies the undeformed midplane. More...
 
Node * Trace_node_pt
 First trace node. More...
 
Node * Trace_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)
 
double & dof_derivative (const unsigned &i)
 
double & dof_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 *, bool > Calculate_dparameter_analytic
 
bool Calculate_hessian_products_analytic
 
LinearAlgebraDistribution * Dof_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< double > Max_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< double > Dof_derivative
 Storage for the derivative of the problem variables wrt arc-length. More...
 
Vector< double > Dof_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
 
OomphCommunicator * Communicator_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: