FEA Inter-operability

Hi,
I think your suggestion on the use of an intermediate parser is really brilliant. If a working translator will (ever) see the light, customizing it will be really fast..
Should the temporary model be kept in memory during the process? Could there be a memory drain issue?
Anyway this solution would simplify also the exclude group option..

Thanks,
Massimo

Hi all,

I found some time to implement a base module for UNV2X conversion. This module implements a modular parser for UNV datasets and a simple FEM object structure to ease the manipulation & conversion of Meshes. It is programmed in Python, and thus should be 100% multiplatform...
The aim of the code is to give you a simple framework to read UNV files, then you will need to create the code to write in the specific output format that you might need.

To show you the way, this code also provides a simple example of mesh conversion to a very simple ASCII format

I dont't think that this code is 100% complete, but it should be enough to convert UNV meshes from Salome to other codes.

At the moment, I am trying to build some converters to Elmer, Calculix & OpenFOAM... but it will take probably some time to finish.

In the mean time, here is the download link for the UNV2X.py module:
www.caelinux.com/downloads/tools/unv2x.py

To use it in your Python code, just do a \"import unv2x\" or \"from unv2x import *\" if you prefer.

To test the conversion example, run:
python unv2x.py unvfilename outputfileprefix

Hi again,

as I was playing with this new code, I tried to write two translators: unv2abaqus & unv2ElmerUNV + some improvements of unv2x

moreover, I tried the install of unvToFoam and it worked great within \"CAE command line tools\" console & guest account. wmake is working fine!!

so I have now tested some preliminary conversion between Salome-UNV and ELMER, Calculix & OpenFOAM.

Here are some usefull links:

www.caelinux.com/downloads/tools/unv2x.zip
www.caelinux.com/downloads/tools/unvToFoam.tar.gz
www.caelinux.com/downloads/tools/unv_star_conversion.tar.gz

Enjoy & improve these codes as you may need !!!

Dear Admin:

Thanks a lot for the great tools.

I installed Salome v3.2.1 on a Mandriva box. Played with an assembly, meshed it and exported to unv format, with groups. I used unix2dos to convert it to dos ascii. When I tried to import it into elmer (Windows version), I got an error message: \"Error! Incorrect data in the mesh inputfile:C:/test.unv\".

I am wondering if you can post your unv-to-elmer converter? Is it written in python? How can I use it in Mandriva? Thanks!

phsieh2005

Dear Admin:

Sorry that I spoke too soon. I found the information in unv2x.zip. It contains several python codes. However, I did run into a problem:

When I tried unv2ElmerUNV.py, it created the unv file that elmer can read. However, the \"groups\" information either was not read or was read incorrectly. I have 3 bodies (exported into 3 groups, I used names as grp1, grp2, and grp3). IN elmer, after import, I only had 2 bodies, one is mesh, one is the solid body. All three partitions (badies) were lump into one.

Where did I do wrong? Help will be greatly appreciated.

Also, I thought that elmer mesh contains 4 files: name.header, name.elements, name.bounday, name.nodes. When I tried unv2elmer.py, I got: name.elments, name.groups, and name.nodes. I was not able to read these 3 files into elmer.

phsieh2005