j2flow2 Class Reference

#include <j2flow2.h>

List of all members.

Public Member Functions
void	changeparam (atsel &atm, vector &val)
void	deryielddsigmadsigma (matrix &sig, matrix &dfdsds)
void	deryieldfdqdq (matrix &dfdqdq)
void	deryieldfdsigmadq (matrix &dfdsdq)
void	deryieldfq (vector &dq)
void	deryieldfsigma (matrix &sig, matrix &dfds)
double	give_consparam (long ipp, long ido)
void	give_interparam (long ipp, long ido, vector &q)
long	give_num_interparam ()
void	giveirrstrains (long ipp, long ido, vector &epsp)
	j2flow2 (void)
void	matstiff (matrix &d, long ipp, long ido)
void	nlstresses (long ipp, long im, long ido)
void	nonloc_nlstresses (long ipp, long im, long ido)
void	plasmod (matrix &h)
double	plasmodscalar (vector &qtr)
void	read (XFILE *in)
void	tangentstiff (matrix &d, matrix &td, long ipp, long ido)
void	updateq (double dgamma, vector &q)
void	updateval (long ipp, long im, long ido)
double	yieldfunction (matrix &sig, vector &q)
	~j2flow2 (void)
Public Attributes
double	fs
	flow stress
double	k
	hardening parameter
strretalg	sra
	stress return algorithm

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Detailed Description

class j2flow defines material model of plasticity based on J2 flow

structure of stored data plastic strains, consistency parameter, hardening parametr

JK

Definition at line 19 of file j2flow2.h.

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Constructor & Destructor Documentation

j2flow2

(

void

)

Definition at line 11 of file j2flow2.cpp.

References fs, and k.

~j2flow2

(

void

)

Definition at line 15 of file j2flow2.cpp.

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Member Function Documentation

void changeparam	(	atsel &	atm,
		vector &	val
	)

Definition at line 337 of file j2flow2.cpp.

References atsel::atrib, fs, k, and atsel::num.

void deryielddsigmadsigma	(	matrix &	sig,
		matrix &	dfdsds
	)

function computes second derivatives of yiled function with respect to stresses

Definition at line 142 of file j2flow2.cpp.

References fillm().

Referenced by mechmat::dfdsigmadsigma(), and mechmat::dgdsigmadsigma().

void deryieldfdqdq

(

matrix &

dfdqdq

)

Definition at line 175 of file j2flow2.cpp.

void deryieldfdsigmadq

(

matrix &

dfdsdq

)

Definition at line 180 of file j2flow2.cpp.

Referenced by mechmat::dfdsigmadq(), and mechmat::dgdsigmadq().

void deryieldfq

(

vector &

dq

)

function evaluates derivatives of yield function with respect of internal variable q 27.10.2001

Definition at line 168 of file j2flow2.cpp.

Referenced by mechmat::dfdqpar(), mechmat::dgdqpar(), plasmodscalar(), and updateq().

void deryieldfsigma	(	matrix &	sig,
		matrix &	dfds
	)

function evaluates derivatives of yield function with respect of stress components 4.8.2001

Definition at line 124 of file j2flow2.cpp.

Referenced by mechmat::dfdsigma(), mechmat::dgdsigma(), and tangentstiff().

double give_consparam	(	long	ipp,
		long	ido
	)

Definition at line 358 of file j2flow2.cpp.

References intpoints::eqother, mechmat::ip, Mm, and intpoints::ncompstr.

void give_interparam	(	long	ipp,
		long	ido,
		vector &	q
	)

Definition at line 374 of file j2flow2.cpp.

References intpoints::eqother, mechmat::ip, Mm, and intpoints::ncompstr.

long give_num_interparam

(

)

Definition at line 369 of file j2flow2.cpp.

void giveirrstrains	(	long	ipp,
		long	ido,
		vector &	epsp
	)

Function returns irreversible plastic strains.

Parameters:

	ipp	- integration point number in the mechmat ip array.
	ido	- index of the first internal variable for given material in the ipp other array
	epsp	- vector of irreversible strains

Returns vector of irreversible strains via parameter epsp

Definition at line 328 of file j2flow2.cpp.

References intpoints::eqother, mechmat::ip, Mm, and vector::n.

Referenced by mechmat::giveirrstrains().

void matstiff	(	matrix &	d,
		long	ipp,
		long	ido
	)

function returns elastic stiffness matrix

Parameters:

d

- elastic stiffness matrix

4.8.2001

Definition at line 33 of file j2flow2.cpp.

References mechmat::elmatstiff(), initial_stiff, matrix::m, Mm, Mp, matrix::n, probdesc::nlman, nonlinman::stmat, tangent_stiff, and tangentstiff().

Referenced by mechmat::matstiff().

void nlstresses	(	long	ipp,
		long	im,
		long	ido
	)

Definition at line 223 of file j2flow2.cpp.

References cp, intpoints::eqother, strretalg::give_err(), strretalg::give_ni(), strretalg::give_tsra(), mechmat::ip, Mm, intpoints::ncompstr, mechmat::newton_stress_return(), intpoints::other, Out, sra, and intpoints::strain.

Referenced by mechmat::computenlstresses().

void nonloc_nlstresses	(	long	ipp,
		long	im,
		long	ido
	)

Definition at line 271 of file j2flow2.cpp.

References cp, mechmat::cutting_plane(), intpoints::eqother, strretalg::give_err(), strretalg::give_ni(), strretalg::give_tsra(), mechmat::ip, Mm, intpoints::ncompstr, intpoints::nonloc, intpoints::other, Out, sra, and intpoints::strain.

void plasmod

(

matrix &

h

)

Definition at line 192 of file j2flow2.cpp.

References k.

Referenced by plasmodscalar(), mechmat::plasticmoduli(), and updateq().

double plasmodscalar

(

vector &

qtr

)

Definition at line 197 of file j2flow2.cpp.

References deryieldfq(), h(), mxv(), vector::n, plasmod(), and scprd().

Referenced by mechmat::plasmodscalar(), and tangentstiff().

void read

(

XFILE *

in

)

Definition at line 20 of file j2flow2.cpp.

References fs, k, strretalg::read(), sra, and xfscanf().

Referenced by mechmat::readmattype().

void tangentstiff	(	matrix &	d,
		matrix &	td,
		long	ipp,
		long	ido
	)

Definition at line 48 of file j2flow2.cpp.

References allocv(), cmulm(), copym(), deryieldfsigma(), destrv(), intpoints::eqother, mechmat::givestress(), mechmat::ip, matrix::m, Mm, mxm(), mxv(), matrix::n, intpoints::ncompstr, planestress, plasmodscalar(), scprd(), intpoints::ssst, stress, subm(), tensor_vector(), vector_tensor(), and vxv().

Referenced by matstiff().

void updateq	(	double	dgamma,
		vector &	q
	)

Definition at line 210 of file j2flow2.cpp.

References deryieldfq(), h(), mxv(), vector::n, and plasmod().

Referenced by mechmat::updateq().

void updateval	(	long	ipp,
		long	im,
		long	ido
	)

Definition at line 308 of file j2flow2.cpp.

References intpoints::eqother, mechmat::givencompeqother(), mechmat::ip, Mm, and intpoints::other.

Referenced by mechmat::updateipvalmat().

double yieldfunction	(	matrix &	sig,
		vector &	q
	)

function evaluates yield function for given stresses

Parameters:

	sig	- stresses
	q	- internal parameters (hardening)

4.8.2001

Definition at line 107 of file j2flow2.cpp.

References deviator(), f, fs, and second_invar().

Referenced by mechmat::yieldfunction().

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Member Data Documentation

double fs

flow stress

Definition at line 46 of file j2flow2.h.

Referenced by changeparam(), j2flow2(), read(), and yieldfunction().

double k

hardening parameter

Definition at line 48 of file j2flow2.h.

Referenced by changeparam(), j2flow2(), plasmod(), and read().

strretalg sra

stress return algorithm

Definition at line 50 of file j2flow2.h.

Referenced by nlstresses(), nonloc_nlstresses(), and read().

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

• SIFEL/MEFEL/SRC/j2flow2.h
• SIFEL/MEFEL/SRC/j2flow2.cpp