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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">AFAIK in Elmer you cannot assign a material to a surface in a 3D simulation, so you need those very flat volumes.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">There is a 3D meshing algorithm in gmsh (MMG3D) which in principle allows anisotropic mesh width. I have not succeeded in the past to get it working
for a similar problem, as it was not available for volumes with internal boundaries. See the following post from the mailing list:
<a href="http://www.geuz.org/pipermail/gmsh/2013/008379.html">http://www.geuz.org/pipermail/gmsh/2013/008379.html</a>. This is a year ago, however, and things might have evolved since then.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">@Christophe: Have they…? ;)<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">HTH,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Matthias<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> Drew D [mailto:drewd423@gmail.com]
<br>
<b>Gesendet:</b> Montag, 6. Oktober 2014 14:52<br>
<b>An:</b> Christophe Geuzaine<br>
<b>Cc:</b> gmsh@geuz.org<br>
<b>Betreff:</b> Re: [Gmsh] Meshing stackup with thin & thick layers<o:p></o:p></span></p>
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<p class="MsoNormal">Christophe,<o:p></o:p></p>
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<p class="MsoNormal">Thanks for the response. Don't I need to treat them as volumes so that I can assign them different materials in my solver? I'm using Elmer, btw.<o:p></o:p></p>
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<p class="MsoNormal">Drew<o:p></o:p></p>
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<p class="MsoNormal">On Mon, Oct 6, 2014 at 4:16 AM, Christophe Geuzaine <<a href="mailto:cgeuzaine@ulg.ac.be" target="_blank">cgeuzaine@ulg.ac.be</a>> wrote:<o:p></o:p></p>
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On 01 Oct 2014, at 22:23, Drew D <<a href="mailto:drewd423@gmail.com">drewd423@gmail.com</a>> wrote:<br>
<br>
> I have a composite stackup with alternating thin & thick layers. The thick ones are are rougly 10x the thickness of the thin ones, and the aspect ratio is on the order of 100:1. The mesh for something like this is always huge. Is there a way to treat the
thin layers as 2D shells, while keeping the thicker ones 3D? The model is being exported as a STEP file and brought into Gmsh.<br>
><br>
<br>
Just include the surfaces in your model; Gmsh generates conformal meshes so this internal surface can then be treated as a thin layer in your solver. If you need duplicated nodes on the surface (which Gmsh normally does not generate), you can run Plugin(Crack)
on the resulting mesh.<br>
<br>
<br>
> Thanks,<br>
> Drew<br>
> _______________________________________________<br>
> gmsh mailing list<br>
> <a href="mailto:gmsh@geuz.org">gmsh@geuz.org</a><br>
> <a href="http://www.geuz.org/mailman/listinfo/gmsh" target="_blank">http://www.geuz.org/mailman/listinfo/gmsh</a><br>
<span style="color:#888888"><br>
<span class="hoenzb">--</span><br>
<span class="hoenzb">Prof. Christophe Geuzaine</span><br>
<span class="hoenzb">University of Liege, Electrical Engineering and Computer Science</span><br>
<span class="hoenzb"><a href="http://www.montefiore.ulg.ac.be/~geuzaine" target="_blank">http://www.montefiore.ulg.ac.be/~geuzaine</a></span><br>
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