background image
Code_Aster
®
Version
8.2
Titrate:
Operator
POST_CHAM_XFEM
Date:
02/03/06
Author (S):
S. GENIAUT, C. REZETTE
Key
:
U4.82.22-A1
Page:
1/6
Instruction manual
U4.8- booklet: Dedicated Post-traiement and analyzes
HT-62/06/004/A
Organization (S):
EDF-R & D/AMA, DeltaCAD















Instruction manual
U4.8- booklet: Postprocessing and dedicated analyzes
Document: U4.82.22



Operator
POST_CHAM_XFEM



1 Goal
To create a SD Résultat containing the fields post-to treat method X-FEM.
It makes it possible to generate the fields displacements in order to post-treat them on the fissured mesh.
Product a concept of the resultat_sdaster type.
The control POST_MAIL_XFEM [U4.82.21] which makes it possible to generate the fissured mesh is
essential before the use of POST_CHAM_XFEM.
background image
Code_Aster
®
Version
8.2
Titrate:
Operator
POST_CHAM_XFEM
Date:
02/03/06
Author (S):
S. GENIAUT, C. REZETTE
Key
:
U4.82.22-A1
Page:
2/6
Instruction manual
U4.8- booklet: Dedicated Post-traiement and analyzes
HT-62/06/004/A
2
Contents
1
......................................................................................................................................................... 1 drank
2
Contents ................................................................................................................................ 2
3
Syntax .................................................................................................................................................. 3
4
Operands ............................................................................................................................................. 3
5
Examples of use ............................................................................................................................ 4
5.1
Bar fissured with X-FEM (treated by test SSNV173A) ............................................................ 4
5.1.1
Extract of the command file ............................................................................................ 4
5.1.2
Visualization of the field displacement obtained by POST_CHAM_XFEM ................................... 5
background image
Code_Aster
®
Version
8.2
Titrate:
Operator
POST_CHAM_XFEM
Date:
02/03/06
Author (S):
S. GENIAUT, C. REZETTE
Key
:
U4.82.22-A1
Page:
3/6
Instruction manual
U4.8- booklet: Dedicated Post-traiement and analyzes
HT-62/06/004/A
3 Syntax
resu2 [resultat_sdaster] = POST_CHAM_XFEM (
MESH = my,
[maillage_sdaster]
MODEL =
Mo, [modele_sdaster]
RESULT
=
resu,
[resultat_sdaster]
NOM_CHAM =
“DEPL”
[TXM]
)


4 Operands
MODEL
Name of model X-FEM generated by the control
MODI_MODELE_XFEM
.
MESH
Name of mesh X-FEM generated by the control
POST_MAIL_XFEM
[U4.82.21].
RESULT
Name of the concept result resulting beforehand from a STAT_NON_LINE.
NOM_CHAM
Name of the field post-to be treated.
For the moment, only the field displacement (“DEPL”) can be post-treaty.

background image
Code_Aster
®
Version
8.2
Titrate:
Operator
POST_CHAM_XFEM
Date:
02/03/06
Author (S):
S. GENIAUT, C. REZETTE
Key
:
U4.82.22-A1
Page:
4/6
Instruction manual
U4.8- booklet: Dedicated Post-traiement and analyzes
HT-62/06/004/A
5 Examples
of use
5.1
Bar fissured with X-FEM (treated by test SSNV173A)

5.1.1 Extract of the command file
BEGINNING ();


# Definition of model X-FEM
MODELEIN=AFFE_MODELE (MAILLAGE=MAILLAG2,
AFFE=_F (GROUP_MA= (“FLIGHT”,),
PHENOMENE=' MECANIQUE',
MODELISATION=' 3d_XFEM',
),
);
# Definition of the fissure (planes)
LN=FORMULE (NOM_PARA= (“X”, “Y”, “Z”), VALE=' Z-12.5 ');
LT=FORMULE (NOM_PARA= (“X”, “Y”, “Z”), VALE=' X-10. ');

FISS=DEFI_FISS_XFEM (MODELE=MODELEIN,
DEFI_FISS=_F (
FONC_LT=LT,
FONC_LN=LN,
),
GROUP_MA_ENRI=' VOL',
ORIE_FOND=_F (PFON_INI= (2.5, 0. , 12.5),
VECT_ORIE= (0. , 0. , 1. ),
PT_ORIGIN= (- 0.5, 0., 1.5),),

CONTACT=_F (...)
);

# Taken into account of the fissure in model X-FEM
MODELEK=MODI_MODELE_XFEM (MODELE_IN=MODELEIN,
FISSURE=FISS,
INFO=2,
);
# Conception of the mesh fissures
MA_XFEM=POST_MAIL_XFEM (MODELE=MODELEK)
# Definitions of the loadings and conditions limiting and material, then assignments

# Resolution
UTOT=STAT_NON_LINE (MODELE=MODELEK,…)
# Conception of the SD result containing the field of displacement to the nodes of the mesh fissures
DEPL=POST_CHAM_XFEM (MAILLAGE=MA_XFEM,
MODELE=MODELEK,
NOM_CHAM=' DEPL',
RESULTAT=UTOT)

END ();
background image
Code_Aster
®
Version
8.2
Titrate:
Operator
POST_CHAM_XFEM
Date:
02/03/06
Author (S):
S. GENIAUT, C. REZETTE
Key
:
U4.82.22-A1
Page:
5/6
Instruction manual
U4.8- booklet: Dedicated Post-traiement and analyzes
HT-62/06/004/A
5.1.2 Visualization of the field displacement obtained by POST_CHAM_XFEM

background image
Code_Aster
®
Version
8.2
Titrate:
Operator
POST_CHAM_XFEM
Date:
02/03/06
Author (S):
S. GENIAUT, C. REZETTE
Key
:
U4.82.22-A1
Page:
6/6
Instruction manual
U4.8- booklet: Dedicated Post-traiement and analyzes
HT-62/06/004/A
























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