MSC Nastran 2014 *.f06 output significant digits
MSC Nastran 2014 *.f06 output significant digits
(OP)
Hello to all,
I am using MSC Nastran 2014 for a linear static analysis. I would like to gain more accuracy in my output displacements than the 6E13.5 format that exists in the *.f06 files.
I have tried using the long field format in the BULK DATA entry for the geometry but that doesn't affect the output significant digits.
Is there a way to change that?
Thank you in advance!
PS: I forgot to mention that I would like to do that through the input file, so I guess I am looking for some kind of parameter to add.
I am using MSC Nastran 2014 for a linear static analysis. I would like to gain more accuracy in my output displacements than the 6E13.5 format that exists in the *.f06 files.
I have tried using the long field format in the BULK DATA entry for the geometry but that doesn't affect the output significant digits.
Is there a way to change that?
Thank you in advance!
PS: I forgot to mention that I would like to do that through the input file, so I guess I am looking for some kind of parameter to add.





RE: MSC Nastran 2014 *.f06 output significant digits
But what are you going to use the displacement results for? Are you really sure that you need the displacements in that many significant digits?
RE: MSC Nastran 2014 *.f06 output significant digits
RE: MSC Nastran 2014 *.f06 output significant digits
CODE --> Nastran
Nastran should then generate a file 'displacement_matrices.op4'. The formatting of OP4 files is not very human-friendly, but I think that you should be able to make sense of the numbers by comparing them with the results in your f06 file.
RE: MSC Nastran 2014 *.f06 output significant digits
You can mitigate against this by always transforming UG to external sequence before outputting it to op4, like this:
MATGEN EQEXINS/INTEXT/9//LUSETS $
MPYAD INTEXT,UG,/UGEXT/1 $
OUTPUT4 UGEXT,,,,//0/91///15 $
If the internal order matches external order, matrix INTEXT will be an identity. If not, its permutation terms will render UGEXT in external order.
A final note: just remember that the displacement output (f06 and op4) is in the global coordinate system. If you have local coordinate systems, and need the displacements to be transformed to the basic coordinate system, that is also possible with an additional call to the VECPLOT module.
RE: MSC Nastran 2014 *.f06 output significant digits
Just for further reference, could you recommend me any tutorials which can help me learn DMAP alters so I can control the output of the analyses better?
Thanks in advance
RE: MSC Nastran 2014 *.f06 output significant digits
These could be good places to start for learning more about DMAP: