Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize > Class Template Reference

This class defines a plastic potential following the theory of Mohr-Coulomb (modified) More...

#include <modified_mohr_coulomb_plastic_potential.h>

Collaboration diagram for Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >:

Public Member Functions
Life Cycle
	ModifiedMohrCoulombPlasticPotential ()
	Initialization constructor. More...
	ModifiedMohrCoulombPlasticPotential (ModifiedMohrCoulombPlasticPotential const &rOther)
	Copy constructor. More...
ModifiedMohrCoulombPlasticPotential &	operator= (ModifiedMohrCoulombPlasticPotential const &rOther)
	Assignment operator. More...
virtual	~ModifiedMohrCoulombPlasticPotential ()
	Destructor. More...

Static Public Member Functions
Operations
static void	CalculatePlasticPotentialDerivative (const array_1d< double, VoigtSize > &rPredictiveStressVector, const array_1d< double, VoigtSize > &rDeviator, const double J2, array_1d< double, VoigtSize > &rGFlux, ConstitutiveLaw::Parameters &rValues)
	This script calculates the derivatives of the plastic potential according to NAYAK-ZIENKIEWICZ paper International journal for numerical methods in engineering vol 113-135 1972. More...
static int	Check (const Properties &rMaterialProperties)
	This method defines the check to be performed in the plastic potential. More...

Type Definitions
static constexpr SizeType	Dimension = TVoigtSize == 6 ? 3 : 2
	We define the dimension. More...
static constexpr SizeType	VoigtSize = TVoigtSize
	The define the Voigt size. More...
static constexpr double	tolerance = std::numeric_limits<double>::epsilon()
	The zero tolerance definition. More...
	KRATOS_CLASS_POINTER_DEFINITION (ModifiedMohrCoulombPlasticPotential)
	Counted pointer of ModifiedMohrCoulombPlasticPotential. More...

Detailed Description

template<SizeType TVoigtSize = 6>
class Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >

This class defines a plastic potential following the theory of Mohr-Coulomb (modified)

Working from the conventional assumption that the strength is related to the difference between major and minor principal stresses results in the Tresca model for effective stress. This gives a cone form of the potential in the principal stress space The plastic potential requires the definition of the following properties:

• DILATANCY_ANGLE: The angle of dilation controls an amount of plastic volumetric strain developed during plastic shearing and is assumed constant during plastic yielding. The value of DILATANCY_ANGLE=0 corresponds to the volume preserving deformation while in shear.
• YIELD_STRESS: Yield stress is the amount of stress that an object needs to experience for it to be permanently deformed. Does not require to be defined simmetrically, one YIELD_STRESS_COMPRESSION and other YIELD_STRESS_TENSION can be defined for not symmetric cases

  Author

  Alejandro Cornejo & Lucia Barbu

Constructor & Destructor Documentation

ModifiedMohrCoulombPlasticPotential() [1/2]

template<SizeType TVoigtSize = 6>

Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::ModifiedMohrCoulombPlasticPotential ( )

inline

Initialization constructor.

ModifiedMohrCoulombPlasticPotential() [2/2]

template<SizeType TVoigtSize = 6>

Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::ModifiedMohrCoulombPlasticPotential ( ModifiedMohrCoulombPlasticPotential< TVoigtSize > const &  rOther )

inline

Copy constructor.

~ModifiedMohrCoulombPlasticPotential()

template<SizeType TVoigtSize = 6>

virtual Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::~ModifiedMohrCoulombPlasticPotential ( )

inlinevirtual

Destructor.

Member Function Documentation

CalculatePlasticPotentialDerivative()

template<SizeType TVoigtSize = 6>

static void Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::CalculatePlasticPotentialDerivative ( const array_1d< double, VoigtSize > &  rPredictiveStressVector, const array_1d< double, VoigtSize > &  rDeviator, const double  J2, array_1d< double, VoigtSize > &  rGFlux, ConstitutiveLaw::Parameters &  rValues  )

inlinestatic

This script calculates the derivatives of the plastic potential according to NAYAK-ZIENKIEWICZ paper International journal for numerical methods in engineering vol 113-135 1972.

As: DF/DS = c1*V1 + c2*V2 + c3*V3

Parameters

rPredictiveStressVector	The predictive stress vector S = C:(E-Ep)
rDeviator	The deviatoric part of the stress vector
J2	The second invariant of the Deviator
rGFlux	The derivative of the plastic potential
rValues	Parameters of the constitutive law

Check()

template<SizeType TVoigtSize = 6>

static int Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::Check ( const Properties &  rMaterialProperties )

inlinestatic

This method defines the check to be performed in the plastic potential.

Returns

0 if OK, 1 otherwise

KRATOS_CLASS_POINTER_DEFINITION()

template<SizeType TVoigtSize = 6>

Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::KRATOS_CLASS_POINTER_DEFINITION

(

ModifiedMohrCoulombPlasticPotential< TVoigtSize >

)

Counted pointer of ModifiedMohrCoulombPlasticPotential.

operator=()

template<SizeType TVoigtSize = 6>

ModifiedMohrCoulombPlasticPotential& Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::operator= ( ModifiedMohrCoulombPlasticPotential< TVoigtSize > const &  rOther )

inline

Assignment operator.

Member Data Documentation

Dimension

template<SizeType TVoigtSize = 6>

constexpr SizeType Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::Dimension = TVoigtSize == 6 ? 3 : 2

staticconstexpr

We define the dimension.

tolerance

template<SizeType TVoigtSize = 6>

constexpr double Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::tolerance = std::numeric_limits<double>::epsilon()

staticconstexpr

The zero tolerance definition.

VoigtSize

template<SizeType TVoigtSize = 6>

constexpr SizeType Kratos::ModifiedMohrCoulombPlasticPotential< TVoigtSize >::VoigtSize = TVoigtSize

staticconstexpr

The define the Voigt size.

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

• /home/runner/work/Documentation/Documentation/master/applications/ConstitutiveLawsApplication/custom_constitutive/auxiliary_files/plastic_potentials/modified_mohr_coulomb_plastic_potential.h