Nastran op2 file format/structure

[sfhaider]

Hi guys, Does anybody know where i can find info about the NASTRAN op2 file structure. I want to write a code to read OP@ files. Where to start. Any ideas?

 

[nazariosr]

Cosmic Nastran used to publish Nastran Programmers Manual where they will show the OP file structure. MSC has changed the structure and I could not read it using the Cosmic file structure.

MSC Programmers Manual seems to be outdated becaue it covers version 68.2.3R2. I do not believe MSC publishes a manual for their current release.
this is where I found it:

http://support.mscsoftware.com/kb/results_kb.cfm?Q_ID=2622&requestTimeout=2000

I am also interested accessing what is in the OP2 file.
Another option might be to output the OP2 in ascii-format instead of binary-format. then you can write an interpreter against the ascii-format.

Good luck.