This is a very short post to describe a tool that can be used for automatic translation between Nastran and Code_Aster: the Vega translator.
It is available as a command line program in our Download section, feel free to give it a try!
Its usage is quite straightforward, you simply have to unzip the archive, enter in the vegaw folder and write in a command prompt:
vegapp --solver-version=stable prob6.dat nastran aster
You should specify a full path to the vegapp.exe executable if you are in a different folder and of course you can specify a different file in place of the prob6.dat used in this example (and included in the archive). The converter will (do its best to) translate and create Code_Aster files:
If the translation is completed without errors you will get a fully working Code_Aster study (mesh and command files included), that you can directly run:
The translator comes from an open source project on GitHub and it is still limited, but its capabilities can be extended and we intend to do so (with better support of the Nastran language or even other solvers).
If you are interested in this, please contact us for more information!
8 thoughts on “Nastran to Code_Aster: automatic translation”
Great tool, does exists something similar for Abqus or CalculiX?
Thank you for your interest. This has been designed as an “universal translator”, meaning that we can add input and output formats, including other solvers. Anyone wishing to participate is welcome, of course! We are also looking for sponsors: it would be much quicker if we could work at it more regularly… ^__^
Hi there, great tool! Is also able to translate back from aster to nastran? Wish a nice day
Translating back is not possible at the moment and very difficult in the general case: since Aster is based on Python it often contains some programming code that would be very hard to translate into Nastran syntax. One way to solve this would be to “flatten” the Code_Aster output, but it requires a lot of work to do so. I would like to look at, at least, convert output results from med into the op2 format but I cannot really say when it could be done.
Thank you for asking, all the best,
Hi, so i have some doubts. Whenever you are done with the translation without errors, You just have to run Aster from the files and that´s it? Or do you have to do again the installation of Aster and follow the steps as it is shown in the page but this time it will work on the cmd?
As soon as you get a good translation you can run it with your Aster existing installation.
All the best
Whenever i try to start Aster i keep having the same problem. An error appear with code aster diognostic job. Any ideas of what can be the problem?
C:\Users\miguel velasco\code-aster_v2019_std-win64>cd v2019
C:\Users\miguel velasco\code-aster_v2019_std-win64\v2019>instalar \ bin \ as_run.bat –test forma01a
“instalar” no se reconoce como un comando interno o externo,
programa o archivo por lotes ejecutable.
C:\Users\miguel velasco\code-aster_v2019_std-win64\v2019>bin\as_run.bat –vers testing –test forma01a
C:\Users\miguel velasco\code-aster_v2019_std-win64\v2019>echo OFF
Página de códigos activa: 65001
prepare environment in C:\Users\MIGUEL~1\AppData\Local\Temp\miguel_velasco-LAPTOP-1V53G0P9-interactif_3017
copying …\tests\forma01a.comm… copying …\tests\forma01a.datg… copying …\tests\forma01a.mmed… Parameters : memory 506 MB – time limit 60 s
Command line 1 :
C:\Users\miguel” “” “velasco\code-aster_v2019_std-win64\v2019\14.4\bin\aster C:\Users\miguel” “” “velasco\code-aster_v2019_std-win64\v2019\14.4\lib\aster\Execution\E_SUPERV.py -commandes fort.1 –num_job=3017 –mode=interactif –rep_outils=C:\Users\miguel” “” “velasco\code-aster_v2019_std-win64\v2019\outils –rep_mat=C:\Users\miguel” “” “velasco\code-aster_v2019_std-win64\v2019\14.4\share\aster\materiau –rep_dex=C:\Users\miguel” “” “velasco\code-aster_v2019_std-win64\v2019\14.4\share\aster\datg –numthreads=1 –suivi_batch –memjeveux=63.25 –tpmax=60.0
C:\Users\miguel velasco\code-aster_v2019_std-win64\v2019\14.4\bin\aster: can’t open file ‘C:\Users\miguel “‘: [Errno 22] Invalid argument
Code_Aster run ended, diagnostic : _ABNORMAL_ABORT
_ABNORMAL_ABORT Code_Aster run ended
cpu system cpu+sys elapsed
Preparation of environment 0.00 0.00 0.00 0.00
Copying datas 0.02 0.00 0.02 0.10
Code_Aster run 0.00 0.00 0.00 0.19
Copying results 0.00 0.00 0.00 0.00
Total 0.06 0.02 0.08 0.49
— DIAGNOSTIC JOB : _ABNORMAL_ABORT
El nombre del directorio no es válido.
El sistema no puede encontrar la ruta especificada.
I think that your username contains a space: “miguel velasco”. This does not work with Code_Aster, you can see this in the FAQ https://code-aster-windows.com/faq/
You might want to try to change it if possible
Hope this helps, all the best,