[Gmsh] Double surfaces after STEP import
Mark van Doesburg
mark.van.doesburg at technolution.nl
Mon Sep 13 09:58:27 CEST 2010
Hello Matthias,
I worked on that code and consider it a complete faillure. In many
cases the OpenCASCADE algorithms would not find the intersections. The
initial version was quite simple but at some point I started to stack
one workaround on top of the other.
Currently I do not have the time to work on another method, but some
algorithms available in CGAL look promising. But in that case I would
probably use BRL-CAD to generate the geometry, and importing STEP into
BRL-CAD might be sub-optimal.
regards,
Mark
"Zenker, Dr. Matthias" <Matthias.Zenker at erbe-med.de> wrote:
Hi,
I have not done FEM calculations for some time (a year or so). The last
time I did them (using gmsh and Elmer), I had the problem that in
geometries imported as STEP files (generated by Solidworks), adjacent
bodies have their own external surface, resulting in double surfaces at
the interfaces. When I use the mesh generated by gmsh in a FEM
calculation (I use Elmer), I get no thermal and electrical connection
because the body meshes are not connected at the interface. There have
been attempts to clean up double surfaces in gmsh, but I don't know if
they have come to a success. Could someone of the developpers update me
on this point?
Thank you!
Matthias
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