Implementation of a linear elastic material according to the LinearViscoelasticPowerLaw model by Bazant et al. (2015) generalized for 3D stress states. More...

#include <LinearViscoelasticPowerLaw.h>

Inheritance diagram for Marmot::Materials::LinearViscoelasticPowerLaw:

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Classes
class	LinearViscoelasticPowerLawStateVarManager

Public Member Functions
	LinearViscoelasticPowerLaw (const double *materialProperties, int nMaterialProperties, int materialLabel)

void	computeStress (double stress, double dStressDDStrain, const double dStrain, const double timeOld, const double dT, double &pNewDT)

int	getNumberOfRequiredStateVars ()

void	assignStateVars (double *stateVars_, int nStateVars)

StateView	getStateView (const std::string &stateName)

Public Member Functions inherited from MarmotMaterialHypoElastic
void	setCharacteristicElementLength (double length)

virtual void	computeStress (double stress, double dStressDDStrain, const double FOld, const double FNew, const double *timeOld, const double dT, double &pNewDT) override

virtual void	computePlaneStress (double stress2D, double dStress_dStrain2D, const double dStrain2D, const double timeOld, const double dT, double &pNewDT)

virtual void	computeUniaxialStress (double stress1D, double dStress_dStrain1D, const double dStrain, const double timeOld, const double dT, double &pNewDT)

virtual void	computePlaneStress (double stress2D, double dStress_dF2DNew, const double FOld2D, const double FNew2D, const double *timeOld, const double dT, double &pNewDT)

virtual void	computeUniaxialStress (double stress1D, double dStress1D_dF1DNew, const double F1DOld, const double F1DNew, const double *timeOld, const double dT, double &pNewDT)

Public Member Functions inherited from MarmotMaterialMechanical
virtual void	computePlaneStress (double stress2D, double dStress_dF2DNew, const double FOld2D, const double FNew2D, const double *timeOld, const double dT, double &pNewDT)

virtual void	computeUniaxialStress (double stress1D, double dStress1D_dF1DNew, const double F1DOld, const double F1DNew, const double *timeOld, const double dT, double &pNewDT)

	MarmotMaterial (const double *materialProperties, int nMaterialProperties, int materialNumber)

Public Member Functions inherited from MarmotMaterial
	MarmotMaterial (const double *materialProperties, int nMaterialProperties, int materialNumber)

virtual	~MarmotMaterial ()

double *	getAssignedStateVars ()

int	getNumberOfAssignedStateVars ()

virtual void	initializeYourself ()

virtual double	getDensity ()

Private Attributes
const double &	E
	Young's modulus. More...

const double &	nu
	Poisson's ratio. More...

const double &	m
	power law compliance parameter More...

const double &	n
	power law exponent More...

const size_t	nKelvin
	number of Kelvin units to approximate the viscoelastic compliance More...

const double &	minTau
	minimal retardation time used in the viscoelastic Kelvin chain More...

const double &	timeToDays
	ratio of simulation time to days More...

std::unique_ptr< LinearViscoelasticPowerLawStateVarManager >	stateVarManager

KelvinChain::Properties	elasticModuli

KelvinChain::Properties	retardationTimes

double	zerothKelvinChainCompliance

Static Private Attributes
static constexpr int	powerLawApproximationOrder = 2

Additional Inherited Members
Public Attributes inherited from MarmotMaterialHypoElastic
double	characteristicElementLength
	Characteristic element length. More...

Public Attributes inherited from MarmotMaterial
const int	materialNumber

Protected Attributes inherited from MarmotMaterial
const double *	materialProperties

const int	nMaterialProperties

double *	stateVars

int	nStateVars

Detailed Description

Implementation of a linear elastic material according to the LinearViscoelasticPowerLaw model by Bazant et al. (2015) generalized for 3D stress states.

For further information see B4 Model.

Constructor & Destructor Documentation

◆ LinearViscoelasticPowerLaw()

Marmot::Materials::LinearViscoelasticPowerLaw::LinearViscoelasticPowerLaw	(	const double *	materialProperties,
		int	nMaterialProperties,
		int	materialLabel
	)

Member Function Documentation

◆ computeStress()

void Marmot::Materials::LinearViscoelasticPowerLaw::computeStress	(	double *	stress,
		double *	dStressDDStrain,
		const double *	dStrain,
		const double *	timeOld,
		const double	dT,
		double &	pNewDT
	)

virtual

For a given linearized strain increment \(\Delta\boldsymbol{\varepsilon}\) at the old and the current time, compute the Cauchy stress and the algorithmic tangent \(\frac{\partial\boldsymbol{\sigma}^{(n+1)}}{\partial\boldsymbol{\varepsilon}^{(n+1)}}\).

Parameters

[in,out]	stress	Cauchy stress
[in,out]	dStressDDstrain	Algorithmic tangent representing the derivative of the Cauchy stress tensor with respect to the linearized strain
[in]	dStrain	linearized strain increment
[in]	timeOld	Old (pseudo-)time
[in]	dt	(Pseudo-)time increment from the old (pseudo-)time to the current (pseudo-)time
[in,out]	pNewDT	Suggestion for a new time increment

Implements MarmotMaterialHypoElastic.

◆ getNumberOfRequiredStateVars()

int Marmot::Materials::LinearViscoelasticPowerLaw::getNumberOfRequiredStateVars ( )

virtual

Implements MarmotMaterial.

◆ assignStateVars()

void Marmot::Materials::LinearViscoelasticPowerLaw::assignStateVars	(	double *	stateVars_,
		int	nStateVars
	)

virtual

Reimplemented from MarmotMaterial.

◆ getStateView()

StateView Marmot::Materials::LinearViscoelasticPowerLaw::getStateView ( const std::string & stateName )

virtual

Implements MarmotMaterial.

Member Data Documentation

◆ E

const double& Marmot::Materials::LinearViscoelasticPowerLaw::E

private

Young's modulus.

◆ nu

const double& Marmot::Materials::LinearViscoelasticPowerLaw::nu

private

Poisson's ratio.

◆ m

const double& Marmot::Materials::LinearViscoelasticPowerLaw::m

private

power law compliance parameter

◆ n

const double& Marmot::Materials::LinearViscoelasticPowerLaw::n

private

power law exponent

◆ nKelvin

const size_t Marmot::Materials::LinearViscoelasticPowerLaw::nKelvin

private

number of Kelvin units to approximate the viscoelastic compliance

◆ minTau

const double& Marmot::Materials::LinearViscoelasticPowerLaw::minTau

private

minimal retardation time used in the viscoelastic Kelvin chain

◆ timeToDays

const double& Marmot::Materials::LinearViscoelasticPowerLaw::timeToDays

private

ratio of simulation time to days

◆ stateVarManager

std::unique_ptr< LinearViscoelasticPowerLawStateVarManager > Marmot::Materials::LinearViscoelasticPowerLaw::stateVarManager

private

◆ elasticModuli

KelvinChain::Properties Marmot::Materials::LinearViscoelasticPowerLaw::elasticModuli

private

◆ retardationTimes

KelvinChain::Properties Marmot::Materials::LinearViscoelasticPowerLaw::retardationTimes

private

◆ zerothKelvinChainCompliance

double Marmot::Materials::LinearViscoelasticPowerLaw::zerothKelvinChainCompliance

private

◆ powerLawApproximationOrder

constexpr int Marmot::Materials::LinearViscoelasticPowerLaw::powerLawApproximationOrder = 2

staticconstexprprivate

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

modules/materials/LinearViscoelasticPowerLaw/include/Marmot/LinearViscoelasticPowerLaw.h
modules/materials/LinearViscoelasticPowerLaw/src/LinearViscoelasticPowerLaw.cpp

Classes

Public Member Functions

Private Attributes

Static Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ LinearViscoelasticPowerLaw()

Member Function Documentation

◆ computeStress()

◆ getNumberOfRequiredStateVars()

◆ assignStateVars()

◆ getStateView()

Member Data Documentation

◆ E

◆ nu

◆ m

◆ n

◆ nKelvin

◆ minTau

◆ timeToDays

◆ stateVarManager

◆ elasticModuli

◆ retardationTimes

◆ zerothKelvinChainCompliance

◆ powerLawApproximationOrder