The GQ12 class implements the displacement based four node quadrilateral drilling element proposed by Long and Xu (1994). More...

#include <GQ12.h>

Inheritance diagram for GQ12:

Collaboration diagram for GQ12:

Public Member Functions
	GQ12 (unsigned, uvec &&, unsigned, double=1.)

int	initialize (const shared_ptr< DomainBase > &) override

int	update_status () override

int	commit_status () override

int	clear_status () override

int	reset_status () override

mat	compute_shape_function (const mat &, unsigned) const override

std::vector< vec >	record (OutputType) const override

void	print () override

Public Member Functions inherited from MaterialElement2D
	MaterialElement2D (unsigned, unsigned, unsigned, uvec &&, uvec &&, bool, std::vector< Node::DOF > &&)

Public Member Functions inherited from MaterialElement
	MaterialElement (unsigned, unsigned, unsigned, uvec &&, uvec &&, bool, MaterialType, std::vector< Node::DOF > &&)

Public Member Functions inherited from Element
	Element (unsigned, unsigned, unsigned, uvec &&, std::vector< Node::DOF > &&)

	Element (unsigned, unsigned, unsigned, uvec &&, uvec &&, bool, MaterialType, std::vector< Node::DOF > &&)

	Element (unsigned, unsigned, unsigned, uvec &&, uvec &&, bool, SectionType, std::vector< Node::DOF > &&)

	Element (unsigned, unsigned, uvec &&, std::vector< Node::DOF > &&)

	Element (unsigned, unsigned, unsigned, unsigned, std::vector< Node::DOF > &&)

int	initialize_base (const shared_ptr< DomainBase > &) final

void	set_initialized (bool) const override

void	set_symmetric (bool) const override

bool	is_initialized () const override

bool	is_symmetric () const override

bool	is_nlgeom () const override

Type	type () const override

void	update_dof_encoding () override

bool	if_update_mass () const override

bool	if_update_viscous () const override

bool	if_update_nonviscous () const override

bool	if_update_stiffness () const override

bool	if_update_geometry () const override

bool	allow_modify_mass () const override

bool	allow_modify_viscous () const override

bool	allow_modify_nonviscous () const override

const uvec &	get_dof_encoding () const override

const uvec &	get_node_encoding () const override

const std::vector< Node::DOF > &	get_dof_identifier () const override

const std::vector< MappingDOF > &	get_dof_mapping () const override

bool	validate_dof (const std::vector< Node::DOF > &) const override

uvec	index_of (const std::vector< Node::DOF > &) const override

const uvec &	get_material_tag () const override

const uvec &	get_section_tag () const override

unsigned	get_dof_number () const override

unsigned	get_node_number () const override

unsigned	get_total_number () const override

void	clear_node_ptr () override

const std::vector< std::weak_ptr< Node > > &	get_node_ptr () const override

mat	get_coordinate () const override

mat	get_coordinate (unsigned) const override
	generate a matrix that contains coordinates of connected nodes

vec	get_incre_displacement () const override

vec	get_incre_velocity () const override

vec	get_incre_acceleration () const override

vec	get_trial_displacement () const override

vec	get_trial_velocity () const override

vec	get_trial_acceleration () const override

vec	get_current_displacement () const override

vec	get_current_velocity () const override

vec	get_current_acceleration () const override

const vec &	get_trial_resistance () const override

const vec &	get_current_resistance () const override

const vec &	get_trial_damping_force () const override

const vec &	get_current_damping_force () const override

const cx_mat &	get_trial_nonviscous_force () const override

const cx_mat &	get_current_nonviscous_force () const override

const vec &	get_trial_inertial_force () override

const vec &	get_current_inertial_force () override

const vec &	get_trial_body_force () const override

const vec &	get_current_body_force () const override

const vec &	get_trial_traction () const override

const vec &	get_current_traction () const override

const mat &	get_trial_mass () const override

const mat &	get_trial_viscous () const override

const mat &	get_trial_nonviscous () const override

const mat &	get_trial_stiffness () const override

const mat &	get_trial_geometry () const override

const mat &	get_trial_secant () const override

const mat &	get_current_mass () const override

const mat &	get_current_viscous () const override

const mat &	get_current_nonviscous () const override

const mat &	get_current_stiffness () const override

const mat &	get_current_geometry () const override

const mat &	get_current_secant () const override

const mat &	get_initial_mass () const override

const mat &	get_initial_viscous () const override

const mat &	get_initial_nonviscous () const override

const mat &	get_initial_stiffness () const override

const mat &	get_initial_geometry () const override

const mat &	get_initial_secant () const override

const mat &	get_mass_container () const override

const mat &	get_stiffness_container () const override

const vec &	update_body_force (const vec &) override

const vec &	update_traction (const vec &) override

double	get_strain_energy () const override

double	get_complementary_energy () const override

double	get_kinetic_energy () const override

double	get_viscous_energy () const override

double	get_nonviscous_energy () const override

const vec &	get_momentum () const override

double	get_characteristic_length () const override

double	get (Parameter) const override

Public Member Functions inherited from ElementBase
	ElementBase (const unsigned T)

Public Member Functions inherited from UniqueTag
	UniqueTag (const UniqueTag &)=delete

	UniqueTag (UniqueTag &&)=delete

UniqueTag &	operator= (const UniqueTag &)=delete

UniqueTag &	operator= (UniqueTag &&)=delete

	~UniqueTag () override=default

	Tag (unsigned=0)

	Tag (const Tag &)=default

	Tag (Tag &&) noexcept=default

Public Member Functions inherited from Tag
	Tag (unsigned=0)

	Tag (const Tag &)=default

	Tag (Tag &&) noexcept=default

Tag &	operator= (const Tag &)=delete

Tag &	operator= (Tag &&)=delete

virtual	~Tag ()=default

void	set_tag (unsigned) const

unsigned	get_tag () const

void	enable ()

void	disable ()

void	guard ()

void	unguard ()

bool	is_active () const

bool	is_guarded () const

Public Member Functions inherited from Distributed
	Distributed (const int obj_tag)

Additional Inherited Members
Public Types inherited from ElementBase
enum class	Type : std::uint8_t { FEM , DEM }

enum class	Parameter : std::uint8_t { ELASTIC , POISSON , RADIUS , MASS , INERTIA , DAMPING }

Static Public Member Functions inherited from Distributed
template<typename T >
static auto	gather (T &&)

Public Attributes inherited from Distributed
const bool	is_local

Protected Types inherited from ElementBase
enum class	Type : std::uint8_t { FEM , DEM }

enum class	Parameter : std::uint8_t { ELASTIC , POISSON , RADIUS , MASS , INERTIA , DAMPING }

Protected Member Functions inherited from Element
vec	get_node_incre_resistance () const override

vec	get_node_trial_resistance () const override

vec	get_node_current_resistance () const override

std::vector< shared_ptr< Material > >	get_material (const shared_ptr< DomainBase > &) const override

std::vector< shared_ptr< Section > >	get_section (const shared_ptr< DomainBase > &) const override

	ElementBase (const unsigned T)

Protected Member Functions inherited from UniqueTag
	UniqueTag (const UniqueTag &)=delete

	UniqueTag (UniqueTag &&)=delete

UniqueTag &	operator= (const UniqueTag &)=delete

UniqueTag &	operator= (UniqueTag &&)=delete

	~UniqueTag () override=default

	Tag (unsigned=0)

	Tag (const Tag &)=default

	Tag (Tag &&) noexcept=default

Protected Member Functions inherited from Tag
	Tag (unsigned=0)

	Tag (const Tag &)=default

	Tag (Tag &&) noexcept=default

Tag &	operator= (const Tag &)=delete

Tag &	operator= (Tag &&)=delete

virtual	~Tag ()=default

void	set_tag (unsigned) const

unsigned	get_tag () const

void	enable ()

void	disable ()

void	guard ()

void	unguard ()

bool	is_active () const

bool	is_guarded () const

Protected Member Functions inherited from Distributed
	Distributed (const int obj_tag)

Static Protected Member Functions inherited from Distributed
template<typename T >
static auto	gather (T &&)

Protected Attributes inherited from Element
std::vector< std::weak_ptr< Node > >	node_ptr

Protected Attributes inherited from DataElement
const uvec	node_encoding

const uvec	material_tag

const uvec	section_tag

const bool	nlgeom = false

bool	update_mass = true

bool	update_viscous = true

bool	update_nonviscous = true

bool	update_stiffness = true

bool	update_geometry = true

bool	modify_mass = true

bool	modify_viscous = true

bool	modify_nonviscous = true

uvec	dof_encoding {}

mat	initial_mass {}

mat	initial_viscous {}

mat	initial_nonviscous {}

mat	initial_stiffness {}

mat	initial_geometry {}

mat	trial_mass {}

mat	trial_viscous {}

mat	trial_nonviscous {}

mat	trial_stiffness {}

mat	trial_geometry {}

mat	current_mass {}

mat	current_viscous {}

mat	current_nonviscous {}

mat	current_stiffness {}

mat	current_geometry {}

vec	trial_resistance {}

vec	current_resistance {}

vec	trial_viscous_force {}

vec	current_viscous_force {}

cx_mat	trial_nonviscous_force {}

cx_mat	current_nonviscous_force {}

vec	trial_inertial_force {}

vec	current_inertial_force {}

vec	trial_body_force {}

vec	current_body_force {}

vec	trial_traction {}

vec	current_traction {}

mat	body_force {}

mat	traction {}

mat	stiffness_container {}

mat	mass_container {}

double	strain_energy = 0.

double	kinetic_energy = 0.

double	viscous_energy = 0.

double	nonviscous_energy = 0.

double	complementary_energy = 0.

vec	momentum {}

const double	characteristic_length = 1.

Protected Attributes inherited from Distributed
const bool	is_local

Detailed Description

The GQ12 class implements the displacement based four node quadrilateral drilling element proposed by Long and Xu (1994).

Reference:

Generalized conforming Quadrilateral Membrane Element With Vertex Rigid Rotational Freedom. https://doi.org/10.1016/0045-7949(94)90356-5

The element assumes the displacement field is compatible/conforming on element boundaries in an averaged/weak sense. The element exhibits a good performance.

Author: tlc

Date: 26/01/2018

Version: 0.1.2

Constructor & Destructor Documentation

◆ GQ12()

GQ12::GQ12	(	unsigned	T,
		uvec &&	N,
		unsigned	M,
		double	TH = `1.`
	)

Member Function Documentation

◆ clear_status()

int GQ12::clear_status ( )

overridevirtual

Implements Element.

◆ commit_status()

int GQ12::commit_status ( )

overridevirtual

Implements Element.

◆ compute_shape_function()

mat GQ12::compute_shape_function	(	const mat &	coordinate,
		unsigned	order
	)		const

overridevirtual

Reimplemented from Element.

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◆ initialize()

int GQ12::initialize ( const shared_ptr< DomainBase > & D )

overridevirtual

Implements ElementBase.

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◆ print()

void GQ12::print ( )

overridevirtual

Reimplemented from Tag.

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◆ record()

std::vector< vec > GQ12::record ( OutputType P ) const

overridevirtual

Reimplemented from Element.

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◆ reset_status()

int GQ12::reset_status ( )

overridevirtual

Implements Element.

◆ update_status()

int GQ12::update_status ( )

overridevirtual

Implements ElementBase.

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

Element/Membrane/Drilling/GQ12.h
Element/Membrane/Drilling/GQ12.cpp

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ GQ12()

Member Function Documentation

◆ clear_status()

◆ commit_status()

◆ compute_shape_function()

◆ initialize()

◆ print()

◆ record()

◆ reset_status()

◆ update_status()