GeneralCircle "upgraded" to a GeneralisedElement: Circular ring whose position is given by

$x = X_c + R \cos(\zeta)$

$y = Y_c + R \sin(\zeta)$

The ring's vertical position $ Y_c $ is determined by "pseudo elasticity":

$0 = f_{load} - Y_c \ k_{stiff}$

This simulates the case where the centre of the ring is mounted on an elastic spring of stiffness $k_{stiff}$ and loaded by the force $f_{load}.$ The "load" is specified by the Data object load_pt(). More...

#include <circle_as_generalised_element.h>

Inheritance diagram for oomph::ElasticallySupportedRingElement:

Public Member Functions
	ElasticallySupportedRingElement (const double &x_c, const double &y_c, const double &r)
	Constructor: Build ring from doubles that describe the geometry: x and y positions of centre and the radius. Initialise stiffness to 1.0. By default, no load is set. More...

virtual	~ElasticallySupportedRingElement ()
	Destructor: More...

void	set_load_pt (Data *load_pt)
	Set pointer to Data object that specifies the "load" on the ElasticallySupportedRingElement. More...

double	load ()
	"Load" acting on the ring More...

double &	k_stiff ()
	Access function for the spring stiffness. More...

void	pin_yc ()
	Pin the vertical displacement. More...

void	unpin_yc ()
	Unpin the vertical displacement. More...

void	get_residuals (Vector< double > &residuals)
	Compute element residual vector (wrapper) More...

void	get_jacobian (Vector< double > &residuals, DenseMatrix< double > &jacobian)
	Compute element residual Vector and element Jacobian matrix (wrapper) More...

Public Member Functions inherited from oomph::GeneralCircle
	GeneralCircle (const double &x_c, const double &y_c, const double &r)
	Constructor: Pass x and y-coords of centre and radius (all pinned) More...

	GeneralCircle (Data *geom_data_pt)
	Alternative constructor: Pass x and y-coords of centre and radius (all as part of Data) More...

virtual	~GeneralCircle ()
	Destructor: Clean up if necessary. More...

void	position (const Vector< double > &zeta, Vector< double > &r) const
	Position Vector at Lagrangian coordinate zeta. More...

void	position (const unsigned &t, const Vector< double > &zeta, Vector< double > &r) const
	Position Vector at Lagrangian coordinate zeta at time level t (t=0: present; t>0: previous level). Steady object, so we simply forward the call to the steady version. More...

double &	x_c ()
	Access function to x-coordinate of centre of circle. More...

double &	y_c ()
	Access function to y-coordinate of centre of circle. More...

double &	R ()
	Access function to radius of circle. More...

unsigned	ngeom_data () const
	How many items of Data does the shape of the object depend on? More...

Data *	geom_data_pt (const unsigned &j)
	Return pointer to the j-th Data item that the object's shape depends on. More...

Protected Member Functions
void	fill_in_generic_residual_contribution (Vector< double > &residuals, DenseMatrix< double > &jacobian, unsigned flag)
	Compute element residual Vector (only if flag=0) and also the element Jacobian matrix (if flag=1) More...

Private Attributes
double	K_stiff
	Stiffness of the ring's "elastic" support. More...

unsigned	External_load_index
	Index of the location of the load Data in the element's array of external data. More...

unsigned	Internal_geometric_data_index
	Index of the location of the geometric Data in the element's array of internal data. More...

bool	Load_data_has_been_set
	Flag to indicate that load data has been set. More...

Additional Inherited Members
Protected Attributes inherited from oomph::GeneralCircle
Vector< Data * >	Geom_data_pt
	Vector of pointers to Data items that affects the object's shape. More...

bool	Must_clean_up
	Do I need to clean up? More...

Detailed Description

GeneralCircle "upgraded" to a GeneralisedElement: Circular ring whose position is given by

$x = X_c + R \cos(\zeta)$

$y = Y_c + R \sin(\zeta)$

The ring's vertical position $ Y_c $ is determined by "pseudo elasticity":

$0 = f_{load} - Y_c \ k_{stiff}$

This simulates the case where the centre of the ring is mounted on an elastic spring of stiffness $k_{stiff}$ and loaded by the force $f_{load}.$ The "load" is specified by the Data object load_pt().

Definition at line 59 of file circle_as_generalised_element.h.

Constructor & Destructor Documentation

◆ ElasticallySupportedRingElement()

oomph::ElasticallySupportedRingElement::ElasticallySupportedRingElement	(	const double &	x_c,
		const double &	y_c,
		const double &	r
	)

inline

Constructor: Build ring from doubles that describe the geometry: x and y positions of centre and the radius. Initialise stiffness to 1.0. By default, no load is set.

Definition at line 68 of file circle_as_generalised_element.h.

References oomph::GeneralCircle::Geom_data_pt, Internal_geometric_data_index, and oomph::GeneralCircle::Must_clean_up.

◆ ~ElasticallySupportedRingElement()

virtual oomph::ElasticallySupportedRingElement::~ElasticallySupportedRingElement ( )

inlinevirtual

Destructor:

Definition at line 92 of file circle_as_generalised_element.h.

Member Function Documentation

◆ fill_in_generic_residual_contribution()

void oomph::ElasticallySupportedRingElement::fill_in_generic_residual_contribution	(	Vector< double > &	residuals,
		DenseMatrix< double > &	jacobian,
		unsigned	flag
	)