[Gmsh] holes intersect boundary

[Nico Schlömer]

Maybe this didn't come through quite right: I'm not interested in the
intersection surface at all; all I want to do is carve cavities out of an
existing block of "material". Suppose I have a cube with edge length 10
centered around the origin, and I want to carve out two ball cavities with
each radius 1.5 centered at (1,0,0) and (-1,0,0), respectively, then gmsh
would already bail out.

And by the way, what would you say is a good "solid modeler"?

--Nico
On Sep 6, 2012 10:39 AM, "David Colignon" <David.Colignon at ulg.ac.be> wrote:

> Hi Nico,
>
> Gmsh is not a solid modeler and cannot automatically compute the
> intersection between surfaces and/or volumes. You have to manually compute
> and define the intersection surfaces (or use a real solid modeler, export
> the geometry in BREP or STEP format and import it in Gmsh).
>
> Regards,
>
> Dave
>
> --
> David Colignon, Ph.D.
> Collaborateur Logistique du F.R.S.-FNRS
> CÉCI - Consortium des Équipements de Calcul Intensif
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>
>
> On 05/09/12 18:25, Nico Schlömer wrote:
>
>> PS. The same holds true if two cavities intersect.
>>
>>
>>
>> On Wed, Sep 5, 2012 at 6:24 PM, Nico Schlömer <nico.schloemer at gmail.com>
>> wrote:
>>
>>> Hi,
>>>
>>> I just played around with t5.geo which carves some ball-shaped holes
>>> in a sample.
>>> What I would like to do is to create some holes which may intersect
>>> with the boundary such that, for example, a half-ball is cut out.
>>> While it seems to be no problem to create the geo file, the 3D meshing
>>> algorithm won't work: It only provides a mesh on the boundary if one
>>> of the cavities intersects with the boundary.
>>>
>>> Is there a workaround for this?
>>>
>>> Cheers,
>>> Nico
>>>
>>
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>>
>
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