[Gmsh] gmsh Digest, Vol 148, Issue 12 (Create prismatic layer around imported *.stl file; Kate Eisenhower)

look mlook at me.com
Tue May 19 07:53:45 CEST 2015


Hello everybody,

I hope it works now.

I have attatched a stripped down case of the problem. You will find the *.geo file as well as the *.stl file in the compressed folder. Your remark seems to imply I need to get the id number of the faces I want to extrude directly from my *.stl file. Are the faces consecutively numbered? I guess not, because gmsh doesn’t accept identification numbers like 0, 1, 2 or 3. I think the problem is I just do not know how to “activate“ my stl in gmsh.

Best regards,

Kate


p.s.: Frankly, I don’t really know to which mail address I should send my replies to.
> 
> 
>> Am 14.05.2015 um 10:14 schrieb look <mlook at me.com <mailto:mlook at me.com>>:
>> 
>> I have attatched a stripped down case of the problem. You will find the *.geo file as well as the *.stl file in the compressed folder. Your remark seems to imply I need to get the id number of the faces I want to extrude directly from my *.stl file. Are the faces consecutively numbered? I guess not, because gmsh doesn’t accept identification numbers like 0, 1, 2 or 3. I think the problem is I just do not know how to “activate“ my stl in gmsh.
>> 
>> Best regards,
>> 
>> Kate
>> <geometry.zip>
>>> Message: 2
>>> Date: Wed, 13 May 2015 12:50:53 +0000
>>> From: Theler German Guillermo <gtheler at cites-gss.com <mailto:gtheler at cites-gss.com>>
>>> To: "gmsh at geuz.org <mailto:gmsh at geuz.org>" <gmsh at geuz.org <mailto:gmsh at geuz.org>>
>>> Subject: Re: [Gmsh] Create prismatic layer around imported *.stl file
>>> Message-ID: <1431521377.2707.11.camel at cites-gss.com <mailto:1431521377.2707.11.camel at cites-gss.com>>
>>> Content-Type: text/plain; charset="utf-8"
>>> 
>>> Can you attach the stl you are merging?
>>> It seems that you are trying to extrude a physical entity rather than a
>>> geometrical one (the surface number in extrude should refer to the
>>> number of the surface within the stl, not the physical surface you
>>> created in the .geo).
>>> 
>>> --
>>> Germ?n Theler :: CTO Eng & IT
>>> 
>>> CITES ? Centro de Innovaci?n Tecnol?gica Empresarial y Social S.A.
>>> Direcci?n General Sancor Seguros
>>> Grupo Sancor Seguros
>>> tel +54 3493 ?428 500 ? Int.: 3374
>>> gtheler at cites-gss.com <mailto:gtheler at cites-gss.com>
>>> www.cites-gss.com - www.gruposancorseguros.com
>>> 
>>> 
>>> 
>>> On Tue, 2015-05-12 at 08:31 +0200, look wrote:
>>>> Hello everybody,
>>>> 
>>>> I am new to this list and hope it is okay to start with a question.
>>>> I have already imported a *.stl file using the Merge option and am now struggling to create a prismatic layer around it. As far as I now, it can be done with the
>>>> Extrude{Surface{surface_number};Layers{{number_of_layers},{height_of_the_layer}};}
>>>> command. Therefore, I first have to define a surface on my stl-geometry in order to refer to it. When I try to assign a elementary ruled surface, nothing happens (I can?t even highlight a surface). When I try to assign a physical surface, gmsh seems to accept it. At least the surface appears in the *.geo file. When I want to extrude the newly created surface, gmsh complains about an unknown surface 5.
>>>> My whole *.geo file looks like the following:
>>>> 
>>>> Merge ?mygeometry.stl";
>>>> 
>>>> Physical Surface(5) = {2};
>>>> 
>>>> Extrude{Surface{5};Layers{{10},{0.5}};};
>>>> 
>>>> I would really appreciate any advice. Thanks a lot in advance,
>>>> 
>>>> Kate
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