Implementation of microplane material model according to Bazant's boundary curve approach. More...

#include <m4.h>

Inheritance diagram for oofem::M4Material:

Collaboration diagram for oofem::M4Material:

Public Member Functions
	M4Material (int n, Domain *d)
	Constructor.
virtual	~M4Material ()
	Destructor.
virtual void	giveCharacteristicMatrix (FloatMatrix &answer, MatResponseForm form, MatResponseMode mode, GaussPoint gp, TimeStep tStep)
	Computes the stiffness matrix of receiver in given integration point, respecting its history.
virtual void	giveThermalDilatationVector (FloatArray &answer, GaussPoint gp, TimeStep tStep)
	Returns a vector of coefficients of thermal dilatation in direction of each material principal (local) axis.
virtual void	giveRealMicroplaneStressVector (FloatArray &answer, Microplane mplane, const FloatArray &strain, TimeStep tStep)
	Computes real stress vector on given microplane (the meaning of values depends on particular implementation, e.g, can contain volumetric, deviatoric normal stresses and shear stresses on microplane) for given increment of microplane strains.
double	macbra (double x)
double	FVplus (double ev, double k1, double c13, double c14, double c15, double Ev)
double	FVminus (double ev, double k1, double k3, double k4, double E)
double	FDminus (double ed, double k1, double c7, double c8, double c9, double E)
double	FDplus (double ed, double k1, double c5, double c6, double c7, double c20, double E)
double	FN (double en, double sv, double k1, double c1, double c2, double c3, double c4, double E, double Ev)
double	FT (double sn, double ev, double k1, double k2, double c10, double c11, double c12, double Et)
virtual void	updateVolumetricStressTo (Microplane *mPlane, double sigv)
	Updates the volumetric stress component after computing real stress microplane vectors.
virtual int	giveSizeOfReducedStressStrainVector (MaterialMode)
	Returns the size of reduced stress/strain vector according to given mode.
virtual int	hasMaterialModeCapability (MaterialMode mode)
	Tests if material supports material mode.
virtual IRResultType	initializeFrom (InputRecord *ir)
	Initializes receiver according to object description stored in input record.
virtual const char *	giveClassName () const
virtual classType	giveClassID () const
	Returns classType id of receiver.
Protected Member Functions
MaterialStatus *	CreateMicroplaneStatus (GaussPoint *gp)
Protected Attributes
double	c1
double	c2
double	c3
double	c4
double	c5
double	c6
double	c7
double	c8
double	c9
double	c10
double	c11
double	c12
double	c13
double	c14
double	c15
double	c16
double	c17
double	c18
double	c19
double	c20
double	k1
double	k2
double	k3
double	k4
double	k5
double	E
double	nu
double	mu
double	EV
double	ED
double	ET
double	talpha

Detailed Description

Implementation of microplane material model according to Bazant's boundary curve approach.

Definition at line 69 of file m4.h.

Constructor & Destructor Documentation

oofem::M4Material::M4Material	(	int	n,
		Domain *	d
	)

Constructor.

Creates Bazant's Boundary Curve Microplane Material belonging to domain d, with number n.

Parameters:

n	Material number.
d	Domain to which newly created material belongs.

Definition at line 42 of file m4.C.

virtual oofem::M4Material::~M4Material ( ) [inline, virtual]

Destructor.

Definition at line 88 of file m4.h.

Member Function Documentation

MaterialStatus* oofem::M4Material::CreateMicroplaneStatus ( GaussPoint * gp ) [inline, protected, virtual]

Implements oofem::MicroplaneMaterial.

Definition at line 120 of file m4.h.

References oofem::FEMComponent::domain.

double oofem::M4Material::FDminus	(	double	ed,
		double	k1,
		double	c7,
		double	c8,
		double	c9,
		double	E
	)		`[inline]`

Definition at line 69 of file m4.C.

References a, c7, and macbra().

Referenced by giveRealMicroplaneStressVector().

double oofem::M4Material::FDplus	(	double	ed,
		double	k1,
		double	c5,
		double	c6,
		double	c7,
		double	c20,
		double	E
	)		`[inline]`

Definition at line 79 of file m4.C.

References a, c7, and macbra().

Referenced by giveRealMicroplaneStressVector().

double oofem::M4Material::FN	(	double	en,
		double	sv,
		double	k1,
		double	c1,
		double	c2,
		double	c3,
		double	c4,
		double	E,
		double	Ev
	)		`[inline]`

Definition at line 89 of file m4.C.

References macbra().

Referenced by giveRealMicroplaneStressVector().

double oofem::M4Material::FT	(	double	sn,
		double	ev,
		double	k1,
		double	k2,
		double	c10,
		double	c11,
		double	c12,
		double	Et
	)		`[inline]`

Definition at line 97 of file m4.C.

References a, and macbra().

Referenced by giveRealMicroplaneStressVector().

double oofem::M4Material::FVminus	(	double	ev,
		double	k1,
		double	k3,
		double	k4,
		double	E
	)		`[inline]`

Definition at line 61 of file m4.C.

Referenced by giveRealMicroplaneStressVector().

double oofem::M4Material::FVplus	(	double	ev,
		double	k1,
		double	c13,
		double	c14,
		double	c15,
		double	Ev
	)		`[inline]`

Definition at line 54 of file m4.C.

References macbra().

Referenced by giveRealMicroplaneStressVector().

void oofem::M4Material::giveCharacteristicMatrix	(	FloatMatrix &	answer,
		MatResponseForm	form,
		MatResponseMode	mode,
		GaussPoint *	gp,
		TimeStep *	tStep
	)		`[virtual]`

Computes the stiffness matrix of receiver in given integration point, respecting its history.

The algorithm should use temporary or equilibrium history variables stored in integration point status to compute and return required result.

Parameters:

answer	Contains result.
form	Material response form.
mode	Material response mode.
gp	Integration point.
tStep	Time step (most models are able to respond only when atTime is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 110 of file m4.C.

References oofem::FloatMatrix::at(), E, nu, oofem::FloatMatrix::resize(), and oofem::FloatMatrix::zero().

virtual classType oofem::M4Material::giveClassID ( ) const [inline, virtual]

Returns classType id of receiver.

Intended for run time type checking. Every derived class have to overload this method.

See also:: classType.

Returns:: Class type of receiver.

Reimplemented from oofem::MicroplaneMaterial_Bazant.

Definition at line 117 of file m4.h.

References oofem::M4MaterialClass.

virtual const char* oofem::M4Material::giveClassName ( ) const [inline, virtual]

Returns:: Class name of the receiver.

Reimplemented from oofem::MicroplaneMaterial_Bazant.

Definition at line 116 of file m4.h.

void oofem::M4Material::giveRealMicroplaneStressVector	(	FloatArray &	answer,
		Microplane *	mplane,
		const FloatArray &	strain,
		TimeStep *	tStep
	)		`[virtual]`

Computes real stress vector on given microplane (the meaning of values depends on particular implementation, e.g, can contain volumetric, deviatoric normal stresses and shear stresses on microplane) for given increment of microplane strains.

Parameters:

answer	Computed result.
mplane	Pointer to microplane object, for which response is computed.
strain	Strain vector.
tStep	Time step.

Implements oofem::MicroplaneMaterial.

Definition at line 127 of file m4.C.

References oofem::FloatArray::at(), oofem::FloatArray::beDifferenceOf(), c1, c10, c11, c12, c13, c14, c15, c2, c20, c3, c4, c5, c6, c7, c8, c9, E, ED, ET, EV, FDminus(), FDplus(), FN(), FT(), FVminus(), FVplus(), oofem::MicroplaneMaterial::giveMicroplaneStatus(), oofem::StructuralMaterialStatus::giveStrainVector(), oofem::StructuralMaterialStatus::giveStressVector(), oofem::FloatArray::isNotEmpty(), k1, k2, k3, k4, oofem::StructuralMaterialStatus::letTempStrainVectorBe(), oofem::StructuralMaterialStatus::letTempStressVectorBe(), oofem::max(), oofem::min(), oofem::FloatArray::resize(), and oofem::FloatArray::zero().

int oofem::M4Material::giveSizeOfReducedStressStrainVector ( MaterialMode mmode ) [virtual]

Returns the size of reduced stress/strain vector according to given mode.

Parameters:

mmode Material response mode.

Reimplemented from oofem::StructuralMaterial.

Definition at line 312 of file m4.C.

void oofem::M4Material::giveThermalDilatationVector	(	FloatArray &	answer,
		GaussPoint *	gp,
		TimeStep *	tStep
	)		`[virtual]`

Returns a vector of coefficients of thermal dilatation in direction of each material principal (local) axis.

Parameters:

answer	Vector of thermal dilatation coefficients.
gp	Integration point.
tStep	Time step (most models are able to respond only when atTime is current time step).

Reimplemented from oofem::StructuralMaterial.

Definition at line 322 of file m4.C.

References oofem::FloatArray::at(), oofem::FloatArray::resize(), talpha, and oofem::FloatArray::zero().

int oofem::M4Material::hasMaterialModeCapability ( MaterialMode mode ) [virtual]

Tests if material supports material mode.

Parameters:

mode	Required material mode.

Returns:: Nonzero if supported, zero otherwise.

Reimplemented from oofem::StructuralMaterial.

Definition at line 287 of file m4.C.

IRResultType oofem::M4Material::initializeFrom ( InputRecord * ir ) [virtual]

Initializes receiver according to object description stored in input record.

This function is called immediately after creating object using constructor. Input record can be imagined as data record in component database belonging to receiver. Receiver may use value-name extracting functions to extract particular field from record.