[Gmsh] Building models that contain step files

[Christophe Geuzaine]

Hi Jacques - What you want to do will be possible in the next release.

(And it's actually already available in the CVS snapshots: you can give 
it a try e.g. with the attached file, which meshes a box around your 
step model.)




Jacques Kools wrote:
> Hello Christophe,
> 
>  
> 
> Hope you are doing fine. I have been continuing to play with step files, 
> and here are a few of my observations:
> 
>  
> 
> My goal is to build a volume around a hole defined in a step file ( 
> similar to this post : http://geuz.org/pipermail/gmsh/2007/002380.html ).
> 
>  
> 
> I am working with the first file of the *.step benchmarks available at 
> http://www.cax-if.org/library/index.html
> 
>  
> 
> When I merge the step file in a geo file, I can modify the 
> characteristic lengths, mesh 2D, and that all works fine. Great !!!
> 
>  
> 
> Now, I build a box around it, and here are a few points:
> 
>  
> 
> 1° When using the GUI to create new geometric entities or points after 
> the merge, the counter starts at 1, and this leads to confusion. Is 
> easily remedied by starting the numbering of elements and points of the 
> box at 101.
> 
> 2         When I try to define a volume with the surfaces of the step 
> file as hole, I get an error message when selecting them.
> 
> 3         I therefore mesh the hole in 2D and save as an stl file ( 
> piece.stl), because the above post indicated that that should work.
> 
>  
> 
> Unfortunately, it does not work. I checked the falcon.stl and falcon.geo 
> files of the above-mentioned post, and they are meshing fine.
> 
>  
> 
> Any comments ?
> 
>  
> 
> Grtngs,
> 
>  
> 
> J.
> 
>  
> 
> P.S.: Why is the box surface meshed very coarsely, independent of the lc 
> that I put in ?
> 
>  
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> gmsh mailing list
> gmsh at geuz.org
> http://www.geuz.org/mailman/listinfo/gmsh


-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine


-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: io1-pe-203_in_a_box.geo
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20070221/631eaf96/attachment.geo>