Hello,

I am a stress analyst working in the aerospace field. I am trying to recreate an old FEA using an input deck from the early 1990s, but am unfamiliar with the language. NASTRAN is the solver I use daily. I can't share the actual file, but below is an example of the deck with random values and skipped lines. So far I've been able to decipher that this file will create an FE Model consisting of various nodes, materials, and then use some "CONNECT" function to create a bar or quad element, as well as properties for these elements.

What I'm trying to understand is the BEAM card (highlighted below) and what each entry on the line means. I assume the first entry, "1", means material ID 1. I know 0.5 is the area of the section and 0.1 and 0.3 are the Ixx and Iyy of the section (I know the section geometry). What I don't know are the "0" entries and also why 0.5 shows up two more times in the 6th and 7th entries. Is anybody who's familiar with this type of solver able to tell me what exactly the entries in the BEAM card consist of AND/OR what solver language this is?

Thanks in advance!

Mystery Code:

TITLE MSC/mod
NODAL POINT LOCATIONS
1 0.0 2. 0.0
2 0.0 4. 0.0
3 0.0 6. 0.0
4 0.0 8. 0.0
.
.
.
.
.
--BLANK LINE--
MATERIAL 10000000 0 0.0003 .3 0 0 0
BEAM 1 .5 0 .1 .03 .5 .5 0
CONNECT 1 TO 2
CONNECT 2 TO 3
CONNECT 3 TO 4
.
.
.
QUAD 1 1 .5 0.0002
CONNECT 1 TO 2 TO 3 TO 4
.
.
.
END DEFINITION