Local Coordinate Systems

Local coordinate systems are created using the command 'CONSTRUCT COORDSYS ...', and attached to a part or set using the command 'PROPERTY ATTACH ...'. The interface produces a coordinate system definition for each such system and places a reference to the system on each GRID card.

For example, the following FEMGEN commands:

CONSTRUCT COORDSYS CYLINDRIC CS1 P1 P2 P3
PROPERTY ATTACH L14 CS CS1

Would be mapped to the following NASTRAN cards:

$
$ GRID POINT CARDS ... 
$
$             ID C-SYS  X       Y       Z        LOC-SYS
GRID           1        100.    0.0     0.0            1
GRID           2        98.0785 19.509  0.0            1
.              .        .       .       .              .
.              .        .       .       .              .
etc.
$
$ LOCAL COORDINATE SYSTEM CARDS ... 
$
$ CS1        CID    RID1 A,B,C...
CORD2C         1             0.0     0.0     0.0     0.0     0.0      1.
            100.     0.0     0.0
etc.