Hello Alex,
I am using BRL-CAD to generate input for gmsh as well. What I initially
did was to use g-iges to generate a faceted brep model, for example:
g-iges -o region.iges -f brl.g region.r
For each region I generated a seperate IGES file. If you merge the iges
files using the Merge command in the .geo file you can add physical
regions and surfaces.
When using the IGES format, each triangle will be a seperate geometrical
surface.
regards,
Mark van Doesburg
Alexandre Pereira <[email protected]> wrote:
Hi Forum
I want to use GMSH to mesh *.stl files that have been built
elsewhere ( In BRL CAD to be more exact ) which will be used as
models for FEA analysis in Code Aster.
I want to export them in *.med format containing the
mesh info as well as some topological info about physical
lines/surfaces/volumes.
In GMSH, I can import the *.stl, define a volume using the *.stl
boundary, mesh/refine the boundary, and mesh/refine the created
volume, what i cannot ( do not know how to ...) do is to separate
the boundary of my *stl in primitive faces to give the a physical
meaning ( they will be used on Boundary condition addressing in
ASTER ), can this be done in GMSH, or sould I build my geometry
in GMSH prior to do all this...?
My maisn issue is that BRL CAD contains some 3D primitives that do
not exist in GMSH, like elliptical/hyperbolic cones generalyzed
ellipsoids, etc, and I use the generated surfaces in my *.stl
as boundaries in some of my models....
Can someone please help...?
Best regards
Alex
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