Code_Aster ®
Version
7.4
Titrate:
Procedure PRE_IDEAS


Date:
31/01/05
Author (S):
O. Key NICOLAS
:
U7.01.01-H Page
: 1/4

Organization (S): EDF-R & D/AMA
Handbook of Utilization
U7.0- booklet: Data exchanges
Document: U7.01.01

Procedure PRE_IDEAS

1 Goal
To convert a file of grid of “universal” format IDEAS with the Aster format. It can then be read by
Aster via command LIRE_MAILLAGE.

Treated versions I-DEASTM are versions 4, 5 and 6 as well as versions 1., 2., 3., 4., 5., 6., 7.,
8., 9. and 10. of Master Series.

Handbook of Utilization
U7.0- booklet: Data exchanges
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Procedure PRE_IDEAS


Date:
31/01/05
Author (S):
O. Key NICOLAS
:
U7.01.01-H Page
: 2/4

2 Syntax
PRE_IDEAS


(
UNITE_IDEAS
=
/
19
,
[DEFAUT]
/
usuper
,
[I]



UNITE_MAILLAGE =/20
,
[DEFAUT]
/
uaster
,
[I]



CREA_GROUP_COUL =/“YES”,










/
“NON”
,
[DEFAUT]


)

Handbook of Utilization
U7.0- booklet: Data exchanges
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Procedure PRE_IDEAS


Date:
31/01/05
Author (S):
O. Key NICOLAS
:
U7.01.01-H Page
: 3/4

3 Operands

3.1 Operand
UNITE_IDEAS

UNITE_IDEAS
=

Logical number of unit of file known as “universal” IDEAS. The default value is 19.

3.2 Operand
UNITE_MAILLAGE

UNITE_MAILLAGE
=

Logical number of unit of the file of Aster grid. The default value is 20.

3.3 Operand
CREA_GROUP_COUL

CREA_GROUP_COUL =/“YES”,







/
“NON”
,
[DEFAUT]

The user can ask for the creation of groups of meshs gathering all the meshs of
even color while indicating CREA_GROUP_COUL = “OUI” in command PRE_IDEAS. These
groups are named COUL_n or N is the number of the color in IDEAS.

In order not to unnecessarily increase the number of groups of meshs and consequently the size
file of grid, it is decided automatically not to create the groups of meshs of one
even color: CREA_GROUP_COUL = “NOT” [DEFECT].

Note:

1)
order
PRE_IDEAS treats only Cartesian frames of reference.
2)
order
PRE_IDEAS manages one Cartesian frame of reference.
3) During the conversion of universal file IDEAS, command PRE_IDEAS checks if
the user defined several frames of reference. If it is the case, a message
of alarm the user informs some, to ask him to check that all the systems of
co-ordinates are identical.

4 Use

On the level of the environment of astk use, file known as “universal” IDEAS must be of type
.msup.

The document [U3.03.01] described the principles of conversion of under files (dated sets) of the file
IDEAS in Aster subfiles and rules of development of the names of nodes, meshs, groups
nodes and groups of meshs produced, as well as the direction of connectivity of the meshs.

If, in the environment of use, one associated file IDEAS the logical unit 19 (value by
defect for the type .msup), one creates the concept Aster grid as follows:

PRE_IDEAS ()
mall = LIRE_MAILLAGE ()
Handbook of Utilization
U7.0- booklet: Data exchanges
HT-66/05/004/A

Code_Aster ®
Version
7.4
Titrate:
Procedure PRE_IDEAS


Date:
31/01/05
Author (S):
O. Key NICOLAS
:
U7.01.01-H Page
: 4/4

Intentionally white left page.
Handbook of Utilization
U7.0- booklet: Data exchanges
HT-66/05/004/A

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