Class for creating an uniaxial plastic gap material compatible with zero-length element. More...

#include <Plastic1DGap.hpp>

Inheritance diagram for Plastic1DGap:

Collaboration diagram for Plastic1DGap:

Public Member Functions
	Plastic1DGap (double E, double fy, double gap, double eta, bool behavior=false)
	Creates a Plastic1DGap material to be specified at a Gauss-point in an Element. More...

	~Plastic1DGap ()
	Destroys this Plastic1DGap material. More...

std::unique_ptr< Material >	CopyMaterial ()

double	GetDensity () const
	Access material density. More...

double	GetPoissonRatio () const
	Returns the Poisson's ratio. More...

double	GetBulkModulus () const
	Access bulk modulus. More...

double	GetShearModulus () const
	Returns linear shear modulus. More...

double	GetElasticityModulus () const
	Access modulus of elasticity. More...

double	GetEnergy () const
	Access the material's energy at current strain. More...

Eigen::MatrixXd	GetDamping () const
	Returns the material viscous damping. More...

Eigen::VectorXd	GetStrain () const
	Returns the material strain. More...

Eigen::VectorXd	GetStress () const
	Returns the material stress. More...

Eigen::VectorXd	GetStrainRate () const
	Returns the material strain rate. More...

Eigen::VectorXd	GetTotalStress () const
	Computes the material total stress. More...

Eigen::MatrixXd	GetTangentStiffness () const
	Returns the material stiffness. More...

Eigen::MatrixXd	GetInitialTangentStiffness () const
	Returns the initial material stiffness. More...

void	CommitState ()
	Perform converged material state update. More...

void	ReverseState ()
	Reverse the material states to previous converged state. More...

void	InitialState ()
	Brings the material states to its initial state in the element. More...

void	UpdateState (const Eigen::VectorXd strain, const unsigned int cond=0)
	Update the material state for this iteration. More...

Public Member Functions inherited from Material
	Material (std::string name, bool model)
	Creates a Material to be specified at a Gauss-point in an Element. More...

virtual	~Material ()=0
	Destroys this Material object. More...

std::string	GetName ()
	Gets material information. More...

bool	IsViscous ()
	Gets material stress model. More...

Private Attributes
double	E
	The elastic moduli. More...

double	fy
	The yield stress. More...

double	Gap
	The separation from which the material start reacting. More...

double	Ratio
	The post-yield stiffness ratio. More...

double	maxYieldStrain
	The maximum positive strain. More...

double	minYieldStrain
	The minimum negative strain. More...

bool	Behavior
	The material behavior (true: Tension, false: Compression) More...

double	oldStrain

double	newStrain

Detailed Description

Class for creating an uniaxial plastic gap material compatible with zero-length element.

See also: Material.hpp

Constructor & Destructor Documentation

◆ Plastic1DGap()

Plastic1DGap::Plastic1DGap	(	double	E,
		double	fy,
		double	gap,
		double	eta,
		bool	behavior = `false`
	)

Creates a Plastic1DGap material to be specified at a Gauss-point in an Element.

Parameters

E	The elastic moduli of this material
fy	The yield stress of this material
gap	The separation from which the material start reacting
eta	The post-yield stiffness ratio (Ep = eta*E)
behavior	The material behavior (true: Tension, false: Compression)

See also: Plastic1DGap::E, Plastic1DGap::gap.

◆ ~Plastic1DGap()

Plastic1DGap::~Plastic1DGap ( )

Destroys this Plastic1DGap material.

Member Function Documentation

◆ CommitState()

void Plastic1DGap::CommitState ( )

virtual

Perform converged material state update.

Note: This function sets the trail stress and strain as converged.

Implements Material.

◆ CopyMaterial()

std::unique_ptr<Material> Plastic1DGap::CopyMaterial ( )

virtual

Returns: A Material pointer to the Plastic1DGap derived class.

See also: Material, Plastic1DGap.

Implements Material.

◆ GetBulkModulus()

double Plastic1DGap::GetBulkModulus ( ) const

virtual

Access bulk modulus.

Returns: The material bulk's (K) modulus.

Implements Material.

◆ GetDamping()

Eigen::MatrixXd Plastic1DGap::GetDamping ( ) const

virtual

Returns the material viscous damping.

Returns: Vector with the material damping components.

Implements Material.

◆ GetDensity()

double Plastic1DGap::GetDensity ( ) const

virtual

Access material density.

Returns: The material density value.

Implements Material.

◆ GetElasticityModulus()

double Plastic1DGap::GetElasticityModulus ( ) const

virtual

Access modulus of elasticity.

Returns: The material Elasticity's (E) modulus.

See also: Plastic1DGap::E.

Implements Material.

◆ GetEnergy()

double Plastic1DGap::GetEnergy ( ) const

virtual

Access the material's energy at current strain.

Returns: Scalar with the material energy value.

Implements Material.

◆ GetInitialTangentStiffness()

Eigen::MatrixXd Plastic1DGap::GetInitialTangentStiffness ( ) const

virtual

Returns the initial material stiffness.

Returns: Matrix with the initial material tangent stiffness matrix.

Note: The initial tangent stiffness matrix is computed when the strain vector is zero.

Implements Material.

◆ GetPoissonRatio()

double Plastic1DGap::GetPoissonRatio ( ) const

virtual

Returns the Poisson's ratio.

Returns: The material poisson's ratio.

Implements Material.

◆ GetShearModulus()

double Plastic1DGap::GetShearModulus ( ) const

virtual

Returns linear shear modulus.

Returns: The material density value.

Implements Material.

◆ GetStrain()

Eigen::VectorXd Plastic1DGap::GetStrain ( ) const

virtual

Returns the material strain.

Returns: Vector with the material strain components.

Note: The strain can be revisited in Plastic1DGap.

See also: Plastic1DGap::oldStrain.

Implements Material.

◆ GetStrainRate()

Eigen::VectorXd Plastic1DGap::GetStrainRate ( ) const

virtual

Returns the material strain rate.

Returns: Vector with the material strain-rate components.

Note: The stress-rate can be revisited in Plastic1DGap.

Implements Material.

◆ GetStress()

Eigen::VectorXd Plastic1DGap::GetStress ( ) const

virtual

Returns the material stress.

Returns: Vector with the material stress components.

Note: The stress can be revisited in Plastic1DGap.

See also: Plastic1DGap::oldStress.

Implements Material.

◆ GetTangentStiffness()

Eigen::MatrixXd Plastic1DGap::GetTangentStiffness ( ) const

virtual

Returns the material stiffness.

Returns: Matrix with the material tangent stiffness matrix.

Note: The stiffness matrix can be revisited in Plastic1DGap.

See also: Plastic1DGap::oldTangentStiffness.

Implements Material.

◆ GetTotalStress()

Eigen::VectorXd Plastic1DGap::GetTotalStress ( ) const

virtual

Computes the material total stress.

Returns: Vector with the material total stress components.

Note: The damping can be revisited in Plastic1DGap.

See also: Plastic1DGap::oldStress.

Implements Material.

◆ InitialState()

void Plastic1DGap::InitialState ( )

virtual

Brings the material states to its initial state in the element.

Note: This function returns the material states to the beginning.

Implements Material.

◆ ReverseState()

void Plastic1DGap::ReverseState ( )

virtual

Reverse the material states to previous converged state.

Note: This function returns the material states to previous converged states.

Implements Material.

◆ UpdateState()

void Plastic1DGap::UpdateState	(	const Eigen::VectorXd	strain,
		const unsigned int	cond = `0`
	)

virtual

Update the material state for this iteration.

Parameters

strain	Vector with the strain components at this Gauss-point.
cond	If the the elastic/plastic material components will be updated.

Note: This function computes the strain and tanget stiffness matrix once the trial strain converged.

Implements Material.

Member Data Documentation

◆ Behavior

bool Plastic1DGap::Behavior

private

The material behavior (true: Tension, false: Compression)

◆ E

double Plastic1DGap::E

private

The elastic moduli.

◆ fy

double Plastic1DGap::fy

private

The yield stress.

◆ Gap

double Plastic1DGap::Gap

private

The separation from which the material start reacting.

◆ maxYieldStrain

double Plastic1DGap::maxYieldStrain

private

The maximum positive strain.

◆ minYieldStrain

double Plastic1DGap::minYieldStrain

private

The minimum negative strain.

◆ newStrain

double Plastic1DGap::newStrain

private

◆ oldStrain

double Plastic1DGap::oldStrain

private

◆ Ratio

double Plastic1DGap::Ratio

private

The post-yield stiffness ratio.

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Plastic1DGap()

◆ ~Plastic1DGap()

Member Function Documentation

◆ CommitState()

◆ CopyMaterial()

◆ GetBulkModulus()

◆ GetDamping()

◆ GetDensity()

◆ GetElasticityModulus()

◆ GetEnergy()

◆ GetInitialTangentStiffness()

◆ GetPoissonRatio()

◆ GetShearModulus()

◆ GetStrain()

◆ GetStrainRate()

◆ GetStress()

◆ GetTangentStiffness()

◆ GetTotalStress()

◆ InitialState()

◆ ReverseState()

◆ UpdateState()

Member Data Documentation

◆ Behavior

◆ E

◆ fy

◆ Gap

◆ maxYieldStrain

◆ minYieldStrain

◆ newStrain

◆ oldStrain

◆ Ratio