On 22/09/15 08:03, Bernd Hahnebach wrote:
Hi David,
thanks for the fast reply. It is what I would like to have connect the faces if
they share an edge. Yes the provided option
seams to do the trick.
-string "Geometry.OCCSewFaces=1;"
It worked on the simple provided part compound_of_faces.step and on one with 10
faces beam-10faces.step. With bothe the FEA
worked out very well :-) On a more sophisticated part mechanical-part.step it
seam to work out too but I get non positive
jacobian during FEA, but that seams to be another part of the story.
Hi,
for more complicated parts, you should also open your step file directly with Gmsh, and try the other options "Remove
degenerated edges and faces", "Remove small edges", ... in Tools -> Options -> Geometry -> General and also look at the Info
messages.
Regards,
Dave
Downloadlink is still:
https://cloud.woelkli.com/public.php?service=files&t=1cfd13febed7694726b902cdb36476d4
I need to test on more examples. I will report back.
kind regards bernd
Zitat von David Colignon <[email protected]>:
Hi Bernd,
can you try with adding the
-string "Geometry.OCCSewFaces=1;"
option ?
This should work with relatively simple geometries, i.e. faces sharing a common
line.
Regards,
Dave
--
David Colignon, Ph.D.
1er logisticien de recherche
Université de Liège
ACE - Applied & Computational Electromagnetics
Sart-Tilman B28
10, Grande Traverse
4000 Liège - BELGIQUE
Tél: +32 (0)4 366 37 32
http://www.ulg.ac.be/nic4
On 21/09/15 19:25, Bernd Hahnebach wrote:
Hi there,
This is my first post to the mailing list so I may introduce myself first. The
"identifier" given to
me by my parents is Bernd and this corresponds to what most people call myself.
The bred to feed
myself an my familiy I earn in an engineering office near Zuerich in
Switzerland. I'm structural
engineer in the building industry. In my spare time I develop on the FEM
Workbench and on the Arch
Workbench of the parametric open source cad plattform FreeCAD. This is why I'm
gone write to this list.
FreeCAD uses for internal parametric surface and solid meshing netgen. AFAIK
due to licence
incompatibility between FreeCAD and GMSH it has never been an option to use
GMSH instead. But there
exists a FreeCAD macro which uses the GMSH installed on ones computer for
meshing. Most users mainly
use this GMSH macro for meshing their models including myself. The macro
exports a *.step meshes
with GMSH and imports the *.unv mesh back into FreeCAD. Babbled enought,the
important part of the
post ...
I run into trouble with meshing compunds of faces. The faces where not
connected to each other and
thus a Finite Element Analysis will fail to work without manual connection off
all the faces of the
compund. As a example a very simple compund of just two faces is taken.
mesh command:
gmsh compound_of_faces.step -3 -format unv -o compound_of_faces.unv -algo
netgen -clmax 100,00
-order 2 -optimize
gmsh --version
2.8.5
on Debian Jesie
I was wondering if it is possible to tell GMSH to mesh a connected Surface Mesh
of a compund of faces?
The files could be downloaded here:
https://cloud.woelkli.com/public.php?service=files&t=1cfd13febed7694726b902cdb36476d4
Kind Regards and thanks to all people who have ever contributed to GMSH
development.
Bernd
_______________________________________________
gmsh mailing list
[email protected]
http://www.geuz.org/mailman/listinfo/gmsh
_______________________________________________
gmsh mailing list
[email protected]
http://www.geuz.org/mailman/listinfo/gmsh
