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
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
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