[Gmsh] intersecting faces...

[Einat Lev]

Hello all
I have an STL model that I created in MeshLAB. MeshLAB can't find any self-intersecting faces in the 2D surface.
I then Merge the STL file into a GEO file and try to create a 3D mesh by selecting the surface and adding a volume.
However, the 3D meshing algorithm complains about self-intersecting faces. These must be somewhere in the interior of the body, right? So, what can I do to solve this problem?
Attached are my STL and GEO files.
All the best,
Einat

[Zenker, Dr. Matthias]

Hi,

I have reproduced your problem. There are indeed intersections, you can see them when you merge the intersect.pos file written by gmsh to your geo file. Now where the intersections come from and why MeshLab doesn't find them I don't know. But at least you can see where they are.

HTH,

Matthias



Von: Einat Lev [mailto:***@ldeo.columbia.edu]
Gesendet: Mittwoch, 19. Dezember 2012 05:47
An: ***@geuz.org
Betreff: [Gmsh] intersecting faces...

Hello all
I have an STL model that I created in MeshLAB. MeshLAB can't find any self-intersecting faces in the 2D surface.
I then Merge the STL file into a GEO file and try to create a 3D mesh by selecting the surface and adding a volume.
However, the 3D meshing algorithm complains about self-intersecting faces. These must be somewhere in the interior of the body, right? So, what can I do to solve this problem?
Attached are my STL and GEO files.
All the best,
Einat





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ERBE Elektromedizin GmbH
Firmensitz: 72072 Tuebingen
Geschaeftsfuehrer: Christian O. Erbe, Reiner Thede
Registergericht: Stuttgart HRB 380137

[Einat Lev]

Thank you! Now I understand what intersect.pos is for :-)
Is there a way to fix the intersections within gMsh?
Best,
Einat

Hi,
I have reproduced your problem. There are indeed intersections, you can see them when you merge the intersect.pos file written by gmsh to your geo file. Now where the intersections come from and why MeshLab doesn’t find them I don’t know. But at least you can see where they are.
HTH,
Matthias
Gesendet: Mittwoch, 19. Dezember 2012 05:47
Betreff: [Gmsh] intersecting faces...
Hello all
I have an STL model that I created in MeshLAB. MeshLAB can't find any self-intersecting faces in the 2D surface.
I then Merge the STL file into a GEO file and try to create a 3D mesh by selecting the surface and adding a volume.
However, the 3D meshing algorithm complains about self-intersecting faces. These must be somewhere in the interior of the body, right? So, what can I do to solve this problem?
Attached are my STL and GEO files.
All the best,
Einat
_____________________________________________________________________
ERBE Elektromedizin GmbH
Firmensitz: 72072 Tuebingen
Geschaeftsfuehrer: Christian O. Erbe, Reiner Thede
Registergericht: Stuttgart HRB 380137
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