Interface file of mesh GIBI with Aster

Code_Aster

Version

7.4

Titrate:

Interface file of mesh GIBI with Aster

Date:

26/05/05

Author (S):

COURTEOUS Mr., A.M. DONORE

Key

U3.04.01-F

Page

1/8

Instruction manual

U3.0- booklet: Mesh HT-66/05/004/A

Organization (S):

EDF-R & D/AMA

Instruction manual
U3.0- booklet: Mesh
Document: U3.04.01

Interface file of mesh GIBI with Aster

Summary:

The use of GIBI (maillor of CASTEM 2000) can be done on workstation Unix/Linux according to
versions available.

One describes here the principle of the interface which makes it possible to use in Aster a file resulting from CASTEM 2000.

This interface is implemented in Aster by the control

PRE_GIBI

[U7.01.11].

Code_Aster

Version

7.4

Titrate:

Interface file of mesh GIBI with Aster

Date:

26/05/05

Author (S):

COURTEOUS Mr., A.M. DONORE

Key

U3.04.01-F

Page

2/8

Instruction manual

U3.0- booklet: Mesh HT-66/05/004/A

Use of GIBI

CASTEM 2000 is a code of analysis of the structures by finite elements, which has a unit of
functionalities dedicated to the mesh in 2D and 3D. The whole of these functions of mesh is known
under name GIBI.

In the continuation of this document, one will name GIBI, the whole of the functions of mesh like
the whole of the controls for the visualization and the analysis of the results.

GIBI is available on a certain number of platforms Unix/Linux. It is a version disseminated by
the group “Codes of Mechanics” of EDF R & D/AMA within the framework of a contract with the ECA, it is
available in downloading on the http://www.code-aster.org site.

The memory allocated by GIBI is of 20 megawords per defect. For certain applications it is
necessary to increase this size memory. With this intention, the variable should be defined

ESOPE_PARAM

following manner:

setenv ESOPE_PARAM “ESOPE=x000000, NTRK=1024, LTRK=1048576”

or according to Shell used:

export ESOPE_PARAM=' ESOPE=x000000, NTRK=1024, LTRK=1048576'

where X is the number of million words which one wishes.

The ECA produces a new version of GIBI each year. Before being brought into service on
centralized server and to be disseminated, this version is tested by the team codes on the whole of the tests
Aster. Thus the “standard” version is currently GIBI version 2000, launched in interactive by
order

gibi2000.x

Documentation on the use of GIBI

The documentation of GIBI can be obtained by carrying out GIBI with the data file according to:

NOTE;

END;

One recovers then in the listing of work, the list of the chapters corresponding to all the operators
GIBI.

GIBI has a documentation in line which makes it possible to have the syntax of each operator by
order:

INFORMATION

name of the control;

but also the possibility of knowing the whole of the operators dedicated to the mesh, gathered
by functionalities (operators of creation of points, linear entities, surface entities and
voluminal entities…) by the control:

INFORMATION DEBU;

This information is also available since a navigator Internet (the site depends on
the local installation).

Code_Aster

Version

7.4

Titrate:

Interface file of mesh GIBI with Aster

Date:

26/05/05

Author (S):

COURTEOUS Mr., A.M. DONORE

Key

U3.04.01-F

Page

3/8

Instruction manual

U3.0- booklet: Mesh HT-66/05/004/A

The Council of use of GIBI for Aster

Not to forget that each control ends in one “;”,

Code_Aster can read again the files created by GIBI having level 3, 4, 5, 6, 8, 9, 10, 11 or 13.
This level is related to the change of format,

to think that it is not possible to impose the passage of the mesh by a point or a line
not being reproduced on external contour. To envisage the geometry division consequently,

to think that GIBI directs with its own conventions the various meshs. Elements
can “be thus turned over” (from where negative jacobiens and pressures to back!).
In GIBI, the user has the operators

OPPOSITE

and

TO DIRECT

for amendment

orientation of elements. One will refer advantageously to the control

MODI_MAILLAGE

([U4.23.04], key words

ORIE_PEAU_2D/3D

) to intervene on the orientation of the meshs in

Aster,

the operator

PRE_GIBI

suppose that GIBI was carried out without error, i.e.

second line of the file

.mgib

is “

LEVEL LEVEL ERROR 0 DIMENSION

… “

In the contrary case, one carries out, nevertheless the interface, by emitting an alarm,

the file containing mesh GIBI must be produced by the control “

TO SAVE

FORMAT

mesh

“; it is the only format read again by the interface

PRE_GIBI

Interface with Aster

The interface with Aster is activated by the control

PRE_GIBI

[U7.01.11].

Entities of mesh GIBI and Aster

Maillor GIBI handles typified and named objects (cf Doc. of use of GIBI).

The types used are:

constants whole, real, text,…,

POINTS,

MESH (together of meshs).

The control

PRE_GIBI

causes:

to write points (GIBI) in the form of nodes (Aster): the names of the Aster nodes are
form:

where

is number GIBI of the corresponding point,

to write the meshs (Aster) contained in mesh (GIBI): names of the meshs Aster
are form:

where

is the sequence number of mesh GIBI in the file of result

GIBI

to write

GROUP_MA

(Aster) corresponding to the mesh (

GIBI

) and of same names,

Note:

The groups of meshs contain only the meshs defining it indeed
mesh GIBI. They do not contain the meshs of the objects referred in this mesh
(edges for example).

to write

GROUP_NO

(Aster) reduced to only one nodes and whose names are the names of

points of

GIBI

Code_Aster

Version

7.4

Titrate:

Interface file of mesh GIBI with Aster

Date:

26/05/05

Author (S):

COURTEOUS Mr., A.M. DONORE

Key

U3.04.01-F

Page

4/8

Instruction manual

U3.0- booklet: Mesh HT-66/05/004/A

It is noticed that

PRE_GIBI

do not generate

GROUP_NO

containing several nodes. What would be

sometimes very useful to impose boundary conditions on all the nodes of an edge. With this intention,
the user has in Aster the control

DEFI_GROUP

who allows to create groups of

nodes starting from groups of meshs.

The key word

CREA_GROUP_NO

of the operator

DEFI_GROUP

[U4.22.01] allows to circumvent this

obstacle.

6 Examples

With

AB = C1

for GIBI:

With

and

are named points.

One thus finds in the Aster mesh of

GROUP_NO

names

With

and

for GIBI:

AB, SQUARES, C1,…, C4

are named mesh.

One thus finds in the Aster mesh of

GROUP_MA

names:

AB, SQUARES, C1,…, C4

Note:

The interface writes only only once possibly identical meshs (what arrives
sometimes with the operator “

AND

“of GIBI). This has as a consequence that the names of the meshs

can have a “classification with holes”. One should not worry some.

The orientation of the meshs is that given by GIBI. This can have importance for some
changes: pressure,…
It is necessary to be conscious owing to the fact that the operators of mesh of GIBI direct the elements (with
rules specified in documentation). Certain elements can “be turned over” by
report/ratio with others. Another command set GIBI could, for example to generate it
mesh:

Code_Aster

Version

7.4

Titrate:

Interface file of mesh GIBI with Aster

Date:

26/05/05

Author (S):

COURTEOUS Mr., A.M. DONORE

Key

U3.04.01-F

Page

5/8

Instruction manual

U3.0- booklet: Mesh HT-66/05/004/A

6.1

Notice concerning control POIN of GIBI

This control can produce results of the different type:

if this control makes it possible to recover only one point,

for example:

louse

POIN PROC A

;

louse

INITIAL POIN;

then

is a named point GIBI.

As an Aster, there will have one

GROUP_NO

of name

who contains only one node.

if this control makes it possible to recover several points:

for example:

louse

RIGHT POIN

With

1.0D-2

;

then

is a named mesh GIBI:

This mesh consists of meshs

POI1

As an Aster, there will have one

GROUP_MA

of name

who contains several

POI1

. To use this

object as

GROUP_NO

, the key word factor will have to be used

CREA_GROUP_NO

order

DEFI_GROUP

6.2

Command file GIBI

OPTI DIME 2 ELEM TRI3;

* POINTS NAME:

To = 0.0.0.0;

B = 1.0.0.0;

* MESH:

AB = DROI 2 A B;

SQUARE = AB TRAN 1 (0. 1.);

C1 C2 C3 C4 = DIMENSION SQUARES;

TO SAVE FORMAT SQUARES;

END;

-------------------------------------------------------------------

Code_Aster

Version

7.4

Titrate:

Interface file of mesh GIBI with Aster

Date:

26/05/05

Author (S):

COURTEOUS Mr., A.M. DONORE

Key

U3.04.01-F

Page

6/8

Instruction manual

U3.0- booklet: Mesh HT-66/05/004/A

6.3

File of result GIBI: (as an indication)

RECORDING OF THE TYPE 4
LEVEL 11 LEVEL ERROR 0 DIMENSION 2
DENSITY 0.00000E+00
RECORDING OF THE TYPE 7
INFORMATION CASTEM2000 8 NUMBERS
IFOUR - 1 NIFOUR 0 IFOMOD - 1 IECHO 1 IIMPI 0 IOSPI 0 ISOTYP 1
NSDPGE 0
RECORDING OF THE TYPE 2
CRUSH NUMBER 1NBRE OBJECTS NAME 6NBRE OBJECTS 5
AB SQUARES C1 C2 C3 C4
2 1 2 3 4 5
4 0 4 3 4
2 3 4 5
0 0 0 0
1 2 3 1 3 4 2 5 3 5
6 3
2 0 0 2 2
0 0
1 2 2 5
2 0 0 2 1
0
5 6
2 0 0 2 2
0 0
6 3 3 4
2 0 0 2 1
0
4 1
RECORDING OF THE TYPE 2
CRUSH NUMBER 32NBRE OBJECTS NAME 2NBRE OBJECTS 6
WITH B
1 5
6
1 3 6 5 2 7
RECORDING OF THE TYPE 2
CRUSH NUMBER 33NBRE OBJECTS NAME 0NBRE OBJECTS 1
21
0.00000000000000E+00 0.00000000000000E+00 0.00000000000000E+00
1.00000000000000E+00 0.00000000000000E+00 0.00000000000000E+00
5.00000000000000E-01 0.00000000000000E+00 5.00000000000000E-01
0.00000000000000E+00 1.00000000000000E+00 0.00000000000000E+00
0.00000000000000E+00 1.00000000000000E+00 0.00000000000000E+00
5.00000000000000E-01 1.00000000000000E+00 5.00000000000000E-01
1.00000000000000E+00 1.00000000000000E+00 0.00000000000000E+00
RECORDING OF THE TYPE 5
AUTOMATIC LABEL: 1

Code_Aster

Version

7.4

Titrate:

Interface file of mesh GIBI with Aster

Date:

26/05/05

Author (S):

COURTEOUS Mr., A.M. DONORE

Key

U3.04.01-F

Page

7/8

Instruction manual

U3.0- booklet: Mesh HT-66/05/004/A

6.4

File of mesh Aster produced by the operator

PRE_GIBI

TITRATE
%

GIBI

FECIT GROUP_NO

FINSF

COOR_2D

0.00000000000000E+00 0.00000000000000E+00 GROUP_NO

1.00000000000000E+00

0.00000000000000E+00

With

5.00000000000000E-01 0.00000000000000E+00 FINSF

0.00000000000000E+00 1.00000000000000E+ 00%

0.00000000000000E+00 1.00000000000000E+00 GROUP_MA

5.00000000000000E-01 1.00000000000000E+00

1.00000000000000E+00 1.00000000000000E+00 M10

FINSF

TRIA3

GROUP_MA

N3 N6

N6 N5

N2 N6

FINSF

N7 N6

FINSF

GROUP_MA

SEG2

FINSF

GROUP_MA

SEG2
M7

FINSF

SEG2

GROUP_MA

N7 N6

SQUARE

N6 N5

M2 M3 M4

FINSF

SEG2

GROUP_MA

M10

N5 N1

FINSF

END