[Gmsh] Salome -> STEP -> gmsh
Bart Vandewoestyne
Bart.Vandewoestyne at telenet.be
Thu Mar 24 13:55:04 CET 2011
Hello list,
I'm still playing around with Salome, STEP files and gmsh, but
can't seem to import spheres correctly into gmsh.
A cube works fine. The Salome file is at
http://www.kuleuven-kortrijk.be/~bartv/cube.hdf
after exporting it to a STEP file with Salome, i get
http://www.kuleuven-kortrijk.be/~bartv/cube.step
which i can mesh correctly with
gmsh -3 cube.step
resulting in
http://www.kuleuven-kortrijk.be/~bartv/cube.msh
If, however, I do the same with a sphere, then I get
bartv at sonic:~/h/public$ gmsh -3 sphere.step
Info : Running 'gmsh -3 sphere.step'
Info : Started on Thu Mar 24 13:50:40 2011
Info : Reading 'sphere.step'
... Step File Reading : sphere.step
... STEP File Read ...
Elapsed time: 0 Hours 0 Minutes 0.000288 Seconds
CPU user time: 0 seconds
CPU system time: 0 seconds
... Step File loaded ...
Elapsed time: 0 Hours 0 Minutes 0.000393 Seconds
CPU user time: 0 seconds
CPU system time: 0 seconds
63 records (entities,sub-lists,scopes), 137 parameters
... Parameters prepared ... Elapsed time: 0 Hours 0 Minutes 0.00061 Seconds
CPU user time: 0 seconds
CPU system time: 0 seconds
... Objets analysed ...
Elapsed time: 0 Hours 0 Minutes 0.001023 Seconds
CPU user time: 0.01 seconds
CPU system time: 0 seconds
STEP Loading done : 32 Entities
Info : Healing geometry (tolerance=1e-06)
Info : - fixing small edges
Info : removing degenerated edge 0
Info : removing degenerated edge 0
Info : - fixing spot and strip faces
Info : OCC Region 1 with 0 faces
Info : Read 'sphere.step'
Info : Meshing 1D...
Info : Mesh 1D complete (0 s)
Info : Meshing 2D...
Info : Mesh 2D complete (0 s)
Info : Meshing 3D...
Info : Meshing volume 1 (Frontal)
Info : CalcLocalH: 0 Points 0 Elements 0 Surface Elements
Info : Check subdomain 1 / 1
Info : 0 open elements
Info : Meshing subdomain 1 of 1
Info : 0 open elements
Info : Mesh 3D complete (0 s)
Info : 0 vertices 0 elements
Info : Writing 'sphere.msh'
Info : Wrote 'sphere.msh'
Info : Stopped on Thu Mar 24 13:50:40 2011
and the resulting .msh file has no tetrahedrons:
http://www.kuleuven-kortrijk.be/~bartv/sphere.msh
In the gmsh GUI, I already tried unselecting
* Remove small edges in OpenCascade models
* Remove small faces in OpenCascade models
before merging/importing the .step file, but this didn't help either.
What am I doing wrong here? How can I draw a sphere in Salome and mesh
its volume using tetrahedrons with gmsh?
I am using gmsh 2.4.2 and Salome 5.1.5 on Ubuntu Maverick 10.10.
Regards,
Bart
--
"Share what you know. Learn what you don't."