Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
U3.03.01-F Page
: 1/10
Organization (S): EDF-R & D/AMA
Handbook of Utilization
U3.0- booklet: Grid
Document: U3.03.01
Interface file of grid IDEAS with Aster
Summary:
The purpose of this document is to describe the principle of interface IDEAS (SDRC) with Aster.
This interface is activated in Aster by procedure PRE_IDEAS [U7.01.01].
The datasets of universal file I-DEASTM read again by the IDEAS-Aster interface are the dataset 151 (title), them
datasets 15, 781 or 2411 (co-ordinates of the nodes), the datasets 71, 780 or 2412 (description of the meshs),
the datasets 752, 2417, 2429, 2430, 2431, 2432, 2435 or 2467 (groups of nodes or meshs) and the dataset
735 (nodes or meshs attached to the curves, meshs area and meshs volume).
So versions I-DEASTM currently supported 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
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
U3.03.01-F Page
: 2/10
1 Vocabulary
IDEAS
“geometry”
together of geometrical entities on which the grid is based. They can be
curves (“curve”) of surfaces (“mesh area”), of volumes (“mesh volume”).
“curve”
linear geometrical entity being able to be made up of under-entities, segments, arcs of
circles, options. The meshs which are based on these under-entities are segments with 2 or 3
nodes.
“mesh area”
geometrical entity surface broadside by “curves” on which the meshs rest of
surface: triangles with 3 or 6 nodes or quadrangles with 4 or 8 nodes.
“mesh volume”
geometrical entity voluminal broadside by “mesh areas”. Meshs of volume which
are based on these under-entities are hexahedrons with 8 or 20 nodes, pentahedrons with 6 or
15 nodes or of the tetrahedrons with 4 or 10 nodes.
“group”
an unspecified grouping (chosen by the user) of geometrical entities, nodes or of
meshs; the user gives him a name.
“universal file”
the formatted file produces by IDEAS constitutes the data file of the interface. It contains
all the geometrical grid (nodes and meshs), entities, groups and associations
geometrical entities - grid.
“geometrical association entity - grid”
list nodes or meshs being based on a given geometrical entity.
·
for each “curve”, the nodes which make it up,
·
for each “mesh area”:
-
the nodes which make it up,
-
in 2D the meshs which make it up.
·
for each “mesh volume”:
-
nodes and the meshs which make it up.
-
the nodes which make it up,
-
in 3D the meshs which make it up.
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
U3.03.01-F Page
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2
Interface of grid drank
The information contained in universal file IDEAS (for versions 4, 5 and 6 and poured them
1., 2., 3., 4., 5., 6., 7., 8., 9. and 10. of Master Series) are retranscribed in the file of grid. That
relate to in particular the co-ordinates of the nodes, the meshs, the groups of nodes and meshs. It
generally acts of simple transfers of subfiles, except for the meshs where a permutation
nodes is necessary.
The names created by the interface are:
·
for the nodes: NO followed by the number of node IDEAS,
·
for the meshs: MA followed by the number of element IDEAS.
The meshs are gathered in subfiles of the homogeneous type: SORTED., QUAD., TETRA.,
PENTA., HEXA.
·
for the groups of nodes or meshs created by the user and named in IDEAS, it
name is simply retranscribed in capital letters:
-
8 alphanumerics to the maximum (if not truncation of the name),
-
the underlined white is allowed.
Note:
The name of the group cannot start with “COUL_” if not it is ignored by the interface
(a message of alarm informs the user of it).
·
in IDEAS, one can assign a color to each mesh generated (by defect, the meshs
are of green color). The colors are located by a number (for example 7 for
green).
To keep this information in Aster, interface PRE_IDEAS can generate groups
meshs of name COUL_ n° color IDEAS containing all the meshs of color “n°
color IDEAS ". To generate these groups of meshs, the user must ask it
explicitly by CREA_GROUP_COUL = “yes” in command PRE_IDEAS.
Without explicit request of the user, these groups of meshs are not create in order to
to limit the number of groups of meshs and not to increase the size of the file unnecessarily
of grid.
From geometrical associations entities - grid, the interface built:
·
GROUP_MA associated with the “mesh volume” in 3D or with the “mesh area” in 2D. They
bear the name M_VOLUi or M_AREAi for the geometrical entity of origin, number I.
·
GROUP_NO associated with the “mesh volume”, “mesh area” or “curve”, which bears the names
M_VOLUi, M_AREAi, CURVEi following the cases.
Note:
The mesh area and the mesh volume do not exist any more in versions 1., 2., 3., 4., 5., 6.,
7., 8., 9. and 10. of Master Series. The user must thus take care to define the groups of
nodes and groups of meshs which it needs for its study.
The interface of grid (PRE_IDEAS) does not retranscribe the boundary conditions and
loadings possibly present in the universal file.
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
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3
Example: Grid IDEAS
There is also the group of nodes
FACE_INF 1 2 5 8 9 11
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
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:
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File Aster grid produced by operator PRE_IDEAS
COOR_3D
NO1
x1
y1
z1
…
…
…
…
NO12 x12
y12
z12
FINSF
HEXA8
MA1
NO1
NO5
NO8
NO2
NO4
NO6
NO7
NO3
FINSF
PENTA6
MA2
NO5
NO9
NO6
NO8
NO11 NO7
MA3
NO6
NO9
NO10 NO7
NO11 NO12
FINSF
GROUP_NO NAME = FACE_INF
NO1
NO2
NO5
NO8
NO9
NO11
FINSF
GROUP_NO NAME = CURVE1
NO1
NO4
FINSF
…
…
…
…
other GROUP_NO for CURVE2 with CURVE11
GROUP_NO NAME = CURVE12
NO10 NO12
FINSF
GROUP_NO NAME = M_AREA1
NO1
NO2
NO3
NO4
FINSF
…
…
…
…
other GROUP_NO for M_AREA2 with M_AREA5
GROUP_NO NAME = M_AREA6
NO1
NO5
NO9
NO11 NO8
NO2
FINSF
GROUP_NO NAME = M_VOLU1
% totality of the nodes
NO1
… ……… NO12
FINSF
GROUP_MA NAME = M_VOLU1
% totality of the meshs
MA1
MA2
MA3
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
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4
Local classification of the meshs of IDEAS and Aster
Notice preliminary:
The numbers being reproduced on the diagrams which follow are the local numbers of the nodes.
4.1
Classification of TRIANGLES (TRIA6)
NUMEROTATION
NUMEROTATION
IDEAS
Aster
5
3
TRIA6
6
4
6
5
1
3
1
2
2
4
4.2
Classification of QUADRANGLES (QUAD8)
The meshs of the type QUAD9 are not available in IDEAS
NUMEROTATION
NUMEROTATION
IDEAS
Aster
6
7
7
5
4
3
8
4
8
6
1
1
2
2
3
5
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
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4.3
Classification of HEXAEDRES (HEXA8 - HEXA20)
4.3.1 HEXA8
6
7
NUMEROTATION
3
8
2
5
IDEAS
1
4
6
7
NUMEROTATION
2
3
8
5
Aster
1
4
4.3.2 HEXA20
15
16
17
10
14
18
11
NUMEROTATION
19
3
13 20
4
5
IDEAS
2
9
6
12
1
7
8
6
18
7
14
17
15
19
5
NUMEROTATION
10
3
8
2
20
Aster
9
11
13
16
1
12
4
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
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4.4
Classification of PRISMES (PENTA6 - PENTA15)
4.4.1 PENTA6
5
NUMEROTATION
6
IDEAS
2
4
1
3
5
6
4
NUMEROTATION
2
Aster
1
3
4.4.2 PENTA15
12
13
11
8
NUMEROTATION
10
14
15
IDEAS
3
7
2
4
9
1
6
5
5
14
13
11
6
4
15
NUMEROTATION
2
10
Aster
7
12
8
1
9
3
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
U3.03.01-F Page
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4.5
Classification of TETRAEDRES (TETRA4 - TETRA10)
4.5.1 TETRA4
2
NUMEROTATION
4
IDEAS
1
3
2
NUMEROTATION
Aster
4
1
3
4.5.2 TETRA10
3
8
2
4
NUMEROTATION
10
7
IDEAS
9
1
6
5
2
9
NUMEROTATION
5
9 6
Aster
4
8
10
1
7
3
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Code_Aster ®
Version
7.4
Titrate:
Interface file of grid IDEAS with Aster
Date:
26/05/05
Author (S):
Key COURTEOUS Mr.
:
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: 10/10
5
Frames of reference
The IDEAS-Aster interface transcribes only the grids whose nodes are defined by
co-ordinates in Cartesian reference mark.
Handbook of Utilization
U3.0- booklet: Grid HT-66/05/004/A
Outline document