[Gmsh] saving GMSH mesh into a CAD file format like STEP

[Frederic Dubois]

Hi Louise, 

You can not save a mesh in a step file. 
You can only save a CAD in step file, and probably a CAD made using OCC factory. 
The "logs" you copy in your mail are confusing. Having a look to one of your files can help. 
Regards 

> De: "Louise Olsen" <lolsenkettle at swin.edu.au>
> À: "DILASSER Guillaume" <Guillaume.DILASSER at cea.fr>, "gmsh" <gmsh at onelab.info>
> Envoyé: Jeudi 5 Mars 2020 01:11:36
> Objet: Re: [Gmsh] saving GMSH mesh into a CAD file format like STEP

> Hi Guillame,

> Thanks for your suggestions. After creating the mesh I got the following error
> message when I tried to save the mesh as a STEP file:

> Info : Done optimizing mesh (28.8829 s)
> Info : 326219 nodes 2114578 elements
> Info : Writing '/home/lolsenkettle/Desktop/composite research/CAD File
> format/meshtargetSaveStep.geo.opt'...
> Info : Done writing '/home/lolsenkettle/Desktop/composite research/CAD File
> format/meshtargetSaveStep.geo.opt'
> Info : Writing '/home/lolsenkettle/Desktop/composite research/CAD File
> format/OlsenCheckStep.step'...
> Error : No OpenCASCADE model found

> I was using the most up-to-date version of gmsh I could fine (version 4.5.4).

> Thanks, Louise

> Dr Louise Olsen-Kettle
> VC Women in STEM Fellow
> Mathematics Department
> Swinburne University of Technology

> Email lolsenkettle at swin.edu.au
> T +61 (0)3 9214 8318 [ https://twitter.com/DrOlsenKettle ] [
> https://twitter.com/DrOlsenKettle | @DrOlsenKettle ] [
> https://twitter.com/DrOlsenKettle |   ] [ https://mail.umontpellier.fr/mail ]

> [ https://mail.umontpellier.fr/mail | W ] [
> https://www.swinburne.edu.au/research/our-research/access-our-research/find-a-researcher-or-supervisor/researcher-profile/?id=lolsenkettle
> | Webpage ]
> [ https://mail.umontpellier.fr/mail |  W  ] [
> https://www.researchgate.net/profile/Louise_Olsen-Kettle | ResearchGate ] W [
> http://espace.library.uq.edu.au/uqlkett1/ | eSpace ] W [
> http://orcid.org/0000-0003-0515-3949 | ORCID ]

> [ https://www.researchgate.net/profile/Louise_Olsen-Kettle ] [
> http://espace.library.uq.edu.au/uqlkett1/ ] [
> http://orcid.org/0000-0003-0515-3949 ]

> From: DILASSER Guillaume <Guillaume.DILASSER at cea.fr>
> Sent: Saturday, 29 February 2020 2:40 AM
> To: Louise Olsen <lolsenkettle at swin.edu.au>; gmsh at onelab.info <gmsh at onelab.info>
> Subject: RE: saving GMSH mesh into a CAD file format like STEP

> Hi Louise,

> Gmsh operates using .geo files and .msh files. “.geo” are files that contain the
> definition of geometrical objects and “.msh” are files containing the meshes
> generated by the program based on a specified geometry. I do not know if any
> commercial CAD software natively supports .geo or .msh files but I doubt it.
> There might still by third-party plugins for some CAD software that might do
> that.

> On the other hand, Gmsh can save both geometries and mesh to a variety of output
> formats. If you are using Gmsh GUI, simply go the menu bar File > Export or hit
> Ctrl+E. That will open a window in which you can select the output file format
> (using the “Type” line, under the “File name” line). If you use Gmsh on the
> command line, use the –format option described in the online documentation [
> http://gmsh.info/doc/texinfo/gmsh.html#Command_002dline-options |
> here ] .

> Hope this helped,

> Guillaume Dilasser

> De : gmsh <gmsh-bounces at ace20.montefiore.ulg.ac.be> De la part de Louise Olsen
> Envoyé : vendredi 28 février 2020 08:04
> À : gmsh @onelab.info
> Objet : [Gmsh] saving GMSH mesh into a CAD file format like STEP

> Hi,

> I know that GMSH can input CAD model files such as STEP format, I want to check
> if any CAD software can input GMSH meshes? And can GMSH save meshes into a CAD
> file format such as STEP?

> Thanks, Louise

> Dr Louise Olsen-Kettle

> VC Women in STEM Fellow
> Mathematics Department
> Swinburne University of Technology

> Email [ mailto:lolsenkettle at swin.edu.au | lolsenkettle at swin.edu.au ]
> T +61 (0)3 9214 8318 [ https://twitter.com/DrOlsenKettle ] [
> https://twitter.com/DrOlsenKettle | @DrOlsenKettle ] [
> https://twitter.com/DrOlsenKettle |   ]

> W [
> https://www.swinburne.edu.au/research/our-research/access-our-research/find-a-researcher-or-supervisor/researcher-profile/?id=lolsenkettle
> | Webpage ]

> W [ https://www.researchgate.net/profile/Louise_Olsen-Kettle | ResearchGate ] W
> [ http://espace.library.uq.edu.au/uqlkett1 | eSpace ] W [
> http://orcid.org/0000-0003-0515-3949 | ORCID ]

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-- 
Frédéric Dubois, PhD, Eng. 
--- 
Directeur adjoint du LMGC. 
Laboratoire de Mécanique et Génie Civil - CNRS/UM 
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