Bulk Data Entry Defines boundary connections for an external superelement.
Format
| (1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
| EXTRN |
GID1 |
C1 |
GID2 |
C2 |
GID3 |
C3 |
GID4 |
C4 |
|
| |
GID5 |
C5 |
etc |
etc |
|
|
|
|
|
Example
| (1) |
(2) |
(3) |
(4) |
(5) |
(6) |
(7) |
(8) |
(9) |
(10) |
| EXTRN |
1001 |
123 |
1002 |
456 |
1103 |
1234 |
434 |
123456 |
|
| |
1340 |
456 |
etc |
etc |
|
|
|
|
|
Definition
| Field |
Contents |
SI Unit Example |
| GIDi |
Identification number of the GRID or SPOINT to which the
external superelement will be connected. No default (Integer >
0)
|
|
| Ci |
Component numbers.
- GRID
- The components refer to the coordinate system
referenced by the grid points.
- No default (0 < Integer ≤ 6)
- SPOINT
- Default = blank (blank or 0)
|
|
Comments
- EXTRN can only
be specified in partitioned Bulk Data sections and is ignored in the main
Bulk Data section.
- Connection grids must be specified
in the partitioned Bulk Data section following BEGIN
SUPER = SEID.
- Pairs of blank fields may be
entered to allow easier modification of the EXTRN entry.
- Embedded blanks are not allowed in
the fields.