Class for creating an uniaxial viscous material in for one-dimensional elements. More...

#include <Viscous1DLinear.hpp>

Inheritance diagram for Viscous1DLinear:

Collaboration diagram for Viscous1DLinear:

Public Member Functions
	Viscous1DLinear (const double eta)
	Creates a Viscous1DLinear material to be specified at a Gauss-point in an Element. More...

	~Viscous1DLinear ()
	Destroys this Viscous1DLinear 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
	Access 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)
	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	eta
	The material viscosity. More...

Eigen::VectorXd	StrainRate
	The material strain-rate vector. More...

Eigen::VectorXd	Stress
	The material stress vector. More...

Eigen::MatrixXd	Damping
	The material damping matrix. More...

Detailed Description

Class for creating an uniaxial viscous material in for one-dimensional elements.

See also: Material.hpp

Constructor & Destructor Documentation

◆ Viscous1DLinear()

Viscous1DLinear::Viscous1DLinear ( const double eta )

Creates a Viscous1DLinear material to be specified at a Gauss-point in an Element.

Parameters

eta	The material viscous coefficient.

See also: Viscous1DLinear::eta.

◆ ~Viscous1DLinear()

Viscous1DLinear::~Viscous1DLinear ( )

Destroys this Viscous1DLinear material.

Member Function Documentation

◆ CommitState()

void Viscous1DLinear::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> Viscous1DLinear::CopyMaterial ( )

virtual

Returns: A Material pointer to the Viscous1DLinear derived class.

See also: Material, Viscous1DLinear.

Implements Material.

◆ GetBulkModulus()

double Viscous1DLinear::GetBulkModulus ( ) const

virtual

Access bulk modulus.

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

Implements Material.

◆ GetDamping()

Eigen::MatrixXd Viscous1DLinear::GetDamping ( ) const

virtual

Returns the material viscous damping.

Returns: Vector with the material damping components.

See also: Viscous1DLinear::Damping.

Implements Material.

◆ GetDensity()

double Viscous1DLinear::GetDensity ( ) const

virtual

Access material density.

Returns: The material density value.

Implements Material.

◆ GetElasticityModulus()

double Viscous1DLinear::GetElasticityModulus ( ) const

virtual

Access modulus of elasticity.

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

Implements Material.

◆ GetEnergy()

double Viscous1DLinear::GetEnergy ( ) const

virtual

Access the material's energy at current strain.

Returns: Scalar with the material energy value.

Implements Material.

◆ GetInitialTangentStiffness()

Eigen::MatrixXd Viscous1DLinear::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 Viscous1DLinear::GetPoissonRatio ( ) const

virtual

Returns the Poisson's ratio.

Returns: The material poisson's ratio.

Implements Material.

◆ GetShearModulus()

double Viscous1DLinear::GetShearModulus ( ) const

virtual

Access shear modulus.

Returns: The material shear's (G) modulus.

Implements Material.

◆ GetStrain()

Eigen::VectorXd Viscous1DLinear::GetStrain ( ) const

virtual

Returns the material strain.

Returns: Vector with the material strain components.

Note: The strain can be revisited in Viscous1DLinear.

Implements Material.

◆ GetStrainRate()

Eigen::VectorXd Viscous1DLinear::GetStrainRate ( ) const

virtual

Returns the material strain rate.

Returns: Vector with the material strain-rate components.

Note: The strain-rate can be revisited in Viscous1DLinear.

See also: Viscous1DLinear::StrainRate.

Implements Material.

◆ GetStress()

Eigen::VectorXd Viscous1DLinear::GetStress ( ) const

virtual

Returns the material stress.

Returns: Vector with the material stress components.

Note: The stress can be revisited in Viscous1DLinear.

Implements Material.

◆ GetTangentStiffness()

Eigen::MatrixXd Viscous1DLinear::GetTangentStiffness ( ) const

virtual

Returns the material stiffness.

Returns: Matrix with the material tangent stiffness matrix.

Note: The stiffness matrix can be revisited in Viscous1DLinear.

Implements Material.

◆ GetTotalStress()

Eigen::VectorXd Viscous1DLinear::GetTotalStress ( ) const

virtual

Computes the material total stress.

Returns: Vector with the material total stress components.

See also: Viscous1DLinear::Stress.

Implements Material.

◆ InitialState()

void Viscous1DLinear::InitialState ( )

virtual

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

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

Implements Material.

◆ ReverseState()

void Viscous1DLinear::ReverseState ( )

virtual

Reverse the material states to previous converged state.

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

Implements Material.

◆ UpdateState()

void Viscous1DLinear::UpdateState	(	const Eigen::VectorXd	strain,
		const unsigned int	cond
	)

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

◆ Damping

Eigen::MatrixXd Viscous1DLinear::Damping

private

The material damping matrix.

◆ eta

double Viscous1DLinear::eta

private

The material viscosity.

◆ StrainRate

Eigen::VectorXd Viscous1DLinear::StrainRate

private

The material strain-rate vector.

◆ Stress

Eigen::VectorXd Viscous1DLinear::Stress

private

The material stress vector.

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ Viscous1DLinear()

◆ ~Viscous1DLinear()

Member Function Documentation

◆ CommitState()

◆ CopyMaterial()

◆ GetBulkModulus()

◆ GetDamping()

◆ GetDensity()

◆ GetElasticityModulus()

◆ GetEnergy()

◆ GetInitialTangentStiffness()

◆ GetPoissonRatio()

◆ GetShearModulus()

◆ GetStrain()

◆ GetStrainRate()

◆ GetStress()

◆ GetTangentStiffness()

◆ GetTotalStress()

◆ InitialState()

◆ ReverseState()

◆ UpdateState()

Member Data Documentation

◆ Damping

◆ eta

◆ StrainRate

◆ Stress