[Gmsh] meshing circular inclusions with desired element size

[Theler German Guillermo]

Try this solution:

When defining points 5 & 10, given them the same characteristic length h
the border has. And then emebed these points into surfaces 200 and 300
adding these lines after defining surfaces 100, 200 and 300:

Point { 5 } In Surface { 200 };
Point { 10 } In Surface { 300 };

See the attached files.

--
Germán Theler :: CTO Ingeniería & TICs

CITES – Centro de Innovación Tecnológica Empresarial y Social S.A.
Dirección General Sancor Seguros
Grupo Sancor Seguros
tel +54 3493 –428 500 – Int.: 3374
gtheler at cites-gss.com
www.cites-gss.com - www.gruposancorseguros.com



On Wed, 2015-07-22 at 15:26 +0930, Nguyen Vinh Phu wrote:
> Dear Johannes,
>
> Your help is very much appreciated. And I managed to do that for one
> single inclusion. When I tried to extend the approach to more than
> one, I failed. Could you please help me how to do that for a simple
> problem with two inclusions of which the geo file is attached so that
> you just modify it. Note that the two inclusions are of different
> radii. And my target is a domain with many many inclusions. So any
> help on how to generalise the procedure is welcome.
>
> Best regards,
> Phu
>
>
> > On 21 Jul 2015, at 5:44 pm, Johannes Wimmer
> <johannes.wimmer at rwth-aachen.de> wrote:
> >
> > Dear Phu,
> > are your inclusions intersecting the domain boundary? If not, simple
> > attractors will do.
> >
> > I have attached a snippet of tutorial 10. It works in 3D
> analogously.
> > Just pay attention that DistMin is not your inner radius of your
> > transition zone from coarse to fine, but the outer one, now. Think
> of it
> > as the radius where the minimal lc applies again. DistMax is then
> your
> > radius up to which the maximal lc (i.e. 5*lc) holds.
> >
> > Cheers,
> > Johannes
> >
> > On 20.07.2015 16:47, Nguyen Vinh Phu wrote:
> >> Dear all,
> >>
> >> I have a square domain with a number of circular inclusions. For
> each
> >> inclusion, I normally define 5 points with the same characteristic
> >> length. This resulted in a mesh where the inclusions are finely
> >> discretised which is not what I need since the inclusions are only
> >> elastic in my FE simulations.
> >>
> >> What I need to achieve is a mesh which is refined around the
> >> inclusion boundaries not within them. I heard and read the
> >> documentation about  background meshes but I really do not know how
> >> to get what I need.
> >>
> >> Any help would be much appreciated.
> >>
> >> Best regards, Phu
> >>
> >>
> >> _______________________________________________ gmsh mailing list
> >> gmsh at geuz.org http://www.geuz.org/mailman/listinfo/gmsh
> >>
> >
> > --
> > Dipl.-Ing. Johannes Wimmer
> > RWTH Aachen
> > Institut für Angewandte Mechanik
> > Mies-van-der-Rohe-Str.1
> > D-52074 Aachen
> >
> > Tel.: +49 (0)241 80 25013
> > Fax : +49 (0)241 80 22001
> > www.ifam.rwth-aachen.de
> >
> <t10_partial_coarseGraining.geo>_______________________________________________
> > gmsh mailing list
> > gmsh at geuz.org
> > http://www.geuz.org/mailman/listinfo/gmsh
>
>
> _______________________________________________
> gmsh mailing list
> gmsh at geuz.org
> http://www.geuz.org/mailman/listinfo/gmsh
>
________________________________
 Imprima este mensaje sólo si es absolutamente necesario.
Para imprimir, en lo posible utilice el papel de ambos lados.
El Grupo Sancor Seguros se compromete con el cuidado del medioambiente.



************AVISO DE CONFIDENCIALIDAD************

El Grupo Sancor Seguros comunica que:

Este mensaje y todos los archivos adjuntos a el son para uso exclusivo del destinatario y pueden contener información confidencial o propietaria, cuya divulgación es sancionada por ley. Si usted recibió este mensaje erróneamente, por favor notifíquenos respondiendo al remitente, borre el mensaje original y destruya las copias (impresas o grabadas en cualquier medio magnético) que pueda haber realizado del mismo. Todas las opiniones contenidas en este mail son propias del autor del mensaje. La publicación, uso, copia o impresión total o parcial de este mensaje o documentos adjuntos queda prohibida.

Disposición DNDP 10-2008. El titular de los datos personales tiene la facultad de ejercer el derecho de acceso a los mismos en forma gratuita a intervalos no inferiores a seis meses, salvo que acredite un interés legítimo al efecto conforme lo establecido en el artículo 14, inciso 3 de la Ley 25.326. La DIRECCIÓN NACIONAL DE PROTECCIÓN DE DATOS PERSONALES, Organo de Control de la Ley 25.326, tiene la atribución de atender las denuncias y reclamos que se interpongan con relación al incumplimiento de las normas sobre la protección de datos personales.
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: inclusions.geo
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20150723/12dd5ab0/attachment.geo>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: inclusions.png
Type: image/png
Size: 63397 bytes
Desc: inclusions.png
URL: <http://www.geuz.org/pipermail/gmsh/attachments/20150723/12dd5ab0/attachment.png>