A LeeNewmarkIterative class defines a solver using Newmark algorithm with Lee damping model. More...

#include <LeeNewmarkIterative.h>

Inheritance diagram for LeeNewmarkIterative:

Collaboration diagram for LeeNewmarkIterative:

Classes
struct	Mode

Public Types
enum class	Type { T0 , T1 , T2 , T3 , T4 }

Public Member Functions
	LeeNewmarkIterative (unsigned, std::vector< Mode > &&, double, double)

int	initialize () override

int	process_constraint () override

int	process_constraint_resistance () override

void	assemble_matrix () override

void	print () override

Public Member Functions inherited from Newmark
	Newmark (unsigned=0, double=.25, double=.5)

void	assemble_resistance () override

void	assemble_matrix () override

int	update_trial_status () override

void	update_parameter (double) override

vec	from_incre_velocity (const vec &, const uvec &) override

vec	from_incre_acceleration (const vec &, const uvec &) override

void	print () override

Public Member Functions inherited from ImplicitIntegrator
constexpr IntegratorType	type () const override

bool	time_independent_matrix () const override

	Integrator (unsigned=0)

	Integrator (const Integrator &)=delete

	Integrator (Integrator &&)=delete

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

	Integrator (const Integrator &)=delete

	Integrator (Integrator &&)=delete

Integrator &	operator= (const Integrator &)=delete

Integrator &	operator= (Integrator &&)=delete

	~Integrator () override=default

void	set_domain (const weak_ptr< DomainBase > &)

shared_ptr< DomainBase >	get_domain () const

virtual int	initialize ()

virtual constexpr IntegratorType	type () const

void	set_time_step_switch (bool)

bool	allow_to_change_time_step () const

void	set_matrix_assembled_switch (bool)

bool	matrix_is_assembled () const

virtual bool	has_corrector () const

virtual bool	time_independent_matrix () const

virtual int	process_load ()

virtual int	process_constraint ()

virtual int	process_criterion ()

virtual int	process_modifier ()

virtual int	process_load_resistance ()

virtual int	process_constraint_resistance ()

void	record () const

virtual void	assemble_resistance ()

virtual void	assemble_matrix ()

virtual vec	get_force_residual ()

virtual vec	get_displacement_residual ()

virtual vec	get_auxiliary_residual ()

virtual sp_mat	get_reference_load ()

virtual const vec &	get_trial_displacement () const

virtual void	update_load ()

virtual void	update_constraint ()

virtual void	update_trial_load_factor (double)

virtual void	update_trial_load_factor (const vec &)

virtual void	update_from_ninja ()

virtual void	update_trial_time (double)

virtual void	update_incre_time (double)

virtual int	update_trial_status ()

virtual int	correct_trial_status ()

virtual int	sync_status (bool)

virtual int	update_internal (const mat &)

mat	solve (const mat &)

mat	solve (const sp_mat &)

mat	solve (mat &&)

mat	solve (sp_mat &&)

virtual int	solve (mat &, const mat &)

virtual int	solve (mat &, const sp_mat &)

virtual int	solve (mat &, mat &&)

virtual int	solve (mat &, sp_mat &&)

virtual void	erase_machine_error (vec &) const

void	stage_and_commit_status ()

virtual void	stage_status ()

virtual void	commit_status ()

virtual void	clear_status ()

virtual void	reset_status ()

virtual void	update_parameter (double)

virtual vec	from_incre_velocity (const vec &, const uvec &)

virtual vec	from_incre_acceleration (const vec &, const uvec &)

virtual vec	from_total_velocity (const vec &, const uvec &)

virtual vec	from_total_acceleration (const vec &, const uvec &)

vec	from_incre_velocity (double, const uvec &)

vec	from_incre_acceleration (double, const uvec &)

vec	from_total_velocity (double, const uvec &)

vec	from_total_acceleration (double, const uvec &)

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

	Tag (const Tag &)=default

	Tag (Tag &&)=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

virtual void	print ()

Additional Inherited Members
Protected Attributes inherited from Newmark
double	C0 = 0.

double	C1 = 0.

double	C2 = 0.

double	C3 = 0.

double	C4 = 0.

double	C5 = 0.

Detailed Description

A LeeNewmarkIterative class defines a solver using Newmark algorithm with Lee damping model.

doi:10.1016/j.compstruc.2020.106423 doi:10.1016/j.compstruc.2021.106663

Remarks:

An iterative algorithm is used. The quadratic convergence is lost.

Author: tlc

Date: 15/01/2024

Version: 0.1.0

Member Enumeration Documentation

◆ Type

enum class LeeNewmarkIterative::Type

strong

Enumerator
T0
T1
T2
T3
T4

Constructor & Destructor Documentation

◆ LeeNewmarkIterative()

LeeNewmarkIterative::LeeNewmarkIterative	(	unsigned	T,
		std::vector< Mode > &&	M,
		double	A,
		double	B
	)

Here is the call graph for this function:

Member Function Documentation

◆ assemble_matrix()

void LeeNewmarkIterative::assemble_matrix ( )

overridevirtual

Assemble the global effective matrix A in AX=B. For FEM applications, it is often a linear combination of stiffness, mass, damping and geometry matrices.

Reimplemented from Integrator.

Here is the call graph for this function:

◆ initialize()

int LeeNewmarkIterative::initialize ( )

overridevirtual

Reimplemented from Integrator.

Here is the call graph for this function:

◆ print()

void LeeNewmarkIterative::print ( )

overridevirtual

Reimplemented from Tag.

◆ process_constraint()

int LeeNewmarkIterative::process_constraint ( )

overridevirtual

The main task of this method is to apply constraints (of various forms implemented in various methods). Combinations of different types need to be considered: 1) homogeneous, 2) inhomogeneous, 3) linear, 4) nonlinear. Combinations of different methods need to be considered: 1) penalty, 2) multiplier. On exit, the global stiffness matrix should be updated, the global residual vector should be updated.

Reimplemented from Integrator.

Here is the call graph for this function:

◆ process_constraint_resistance()

int LeeNewmarkIterative::process_constraint_resistance ( )

overridevirtual

This method is similar to process_constraint(), but it only updates the global residual vector. The global stiffness matrix is not touched as in some solving schemes, the global stiffness matrix is only assembled and factorised once at the beginning. Subsequent iterations do not assemble the global stiffness matrix again and reuse the factorised matrix. In this case, the factorised matrix cannot be modified.

Reimplemented from Integrator.

Here is the call graph for this function:

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

Solver/Integrator/LeeNewmarkIterative.h
Solver/Integrator/LeeNewmarkIterative.cpp

Classes

Public Types

Public Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ Type

Constructor & Destructor Documentation

◆ LeeNewmarkIterative()

Member Function Documentation

◆ assemble_matrix()

◆ initialize()

◆ print()

◆ process_constraint()

◆ process_constraint_resistance()