Le 24-nov.-10 à 20:11, Meiner Auchmeiner a écrit :
I just wanted to drop you all a quick note that I finally found a
solution for generating hexahedra meshes out of STL surfaces (with an
intermediate tetrahedral mesh step). Unfortunately, this solution is
not GMSH but an external program :(. As a further drawback this tool
is not even OpenSource... Fortunately, the academic license of it is
quite affordable. So everybody who runs into the same problems I did
should take a look at CUBIT (from Sandia National Labs). I hope it's
ok that I point towards this external solution - please excuse any
inconvenience caused.
no problemo
JFR
Cheers,
Uwe
---
2010/11/23 Meiner Auchmeiner <[email protected]>:
Hello again,
thank you very much for your quick reply.
2010/11/23 Jean-Francois Remacle <jean-
[email protected]>:
Le 23-nov.-10 à 17:25, Meiner Auchmeiner a écrit :
Hi gmsh group,
Hello,
I was wondering if anybody here succeeded to mesh a STL geometry
with
an unstructured mesh consisting of hexahedra elements. I'm trying to
mesh following file(s) using standard settings, except for the
subdivision algorithm "All hexas": 500.stl & 500.geo (see
attachment).
I'm always getting the error messages "Error: Cannot evaluate
point on
discrete face" and "Error: Cannot compute parametric coordinates on
discrete face". Whereas meshing the STL geometry with tetrahedron
elements work like a charm. Is there any intermediate step necessary
to optimize (maybe with e.g. MeshLab) the input STL geometry? Or is
there any gmsh preprocessing option/conversion I overlooked ?
There is actually NO automatic hexaedral mesher in GMSH.
For doing a better STL, you can use the reparametrization tools, see
https://geuz.org/trac/gmsh/wiki/STLRemeshing (username wiki,
password wiki).
JF
Hmm, so do I get you right, there is no way (yet?) of generating
hexahedral meshes out of STL files in gmsh? In all my naivety I
thought it would be possible in GMSH to subdivide tetrahedra elements
in hexahedra elements... Say, what about the manual hexahedral mesher
in GMSH you just mentioned, is it - with the right manually input -
capable of meshing closed STL surface geometries with hexas?
Uwe
Thanks
Uwe
P.S.: The skeleton data have been obtained by courtesy of S. Van
Sint
Jan, Laboratory of Anatomy, Biomechanics and Organogenesis,
Université
Libre de Bruxelles.
<500.stl><500.geo>_______________________________________________
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------------------------------------------------------------------
Prof. Jean-Francois Remacle
Universite catholique de Louvain (UCL)
Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering
Institute of Mechanics, Materials and Civil Engineering (iMMC)
Center for Systems Engineering and Applied Mechanics (CESAME)
Tel : +32-10-472352 -- Mobile : +32-473-909930
------------------------------------------------------------------
Prof. Jean-Francois Remacle
Universite catholique de Louvain (UCL)
Ecole Polytechnique de Louvain (EPL) - Louvain School of Engineering
Institute of Mechanics, Materials and Civil Engineering (iMMC)
Center for Systems Engineering and Applied Mechanics (CESAME)
Tel : +32-10-472352 -- Mobile : +32-473-909930
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