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different materials in proam

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Old   October 18, 2004, 11:45
Default different materials in proam
  #1
new-user
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Hi There,

Another quite silly question:

HOw can I construct a mesh in proam consisting of a number of different materials (I have got already the surfaces)? Am I to create it in steps for each material storing it in database and then assemble all together? Do I have to take care about the couples? I am just at the stage of thinking about the model, which strategy to choose, that's why my questions are a bit general....

Please!!! I need some guidance, because I do not want to hit a dead end more than 3 times.

Thanks
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Old   October 20, 2004, 09:07
Default Re: different materials in proam
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Volker
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Hi, I might be wrong, but I think you will have to do them seperately, otherwise proam will have a problem with multiple edges and shell-orientation.

You have to be careful about couples. Do you have plane or curved material interfaces? In the first case you shouldn't have too many problems with couples, but the coupling of curved surfaces can be quite a pain.

When I create a mesh of various materials, I usually start with the biggest part(s) and use the resulting volume mesh to create a new surface around them. Then I use this new surface (or parts of it) for my next adjoining volume mesh. If it is done properly, you will get a one-to-one connection and won't need couples. This won't work with trimmed cells or 'Fastest' for Tets. Good Luck!

Regards,

Volker
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Old   October 20, 2004, 10:47
Default Re: different materials in proam
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Thanks Volker,

That's right. In the trimmed mesh it changes the starting surface to correspond to what is inside the volume... Anyway, I will try to obtain first the trimmed one with couples, but if it doesn't work I will use your advice. Thanks a lot once more.

Regards

Anna aka new-user
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Old   October 21, 2004, 01:01
Default Re: different materials in proam
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Lars Ola Liavåg
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Hello there,

It should be possible to mesh multiple volumes in one go, separating them with e.g. internal baffles or shells. I don't remember the details anymore but there's something about it in the pro-AM user guide.

Regs. Lars Ola
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Old   October 21, 2004, 10:40
Default Re: different materials in proam
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Pauli
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I believe the multiple volumes defined by baffles is only for tet meshes. I don't think it works with trimmed cells.
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Old   October 25, 2004, 02:18
Default Re: different materials in proam
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Lars Ola Liavåg
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I still think you can do it. I suggest you either just try it or call support.

Lars Ola
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Old   October 26, 2004, 03:32
Default Re: different materials in proam
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ping
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The best way is to use the latest STAR-Design version (or other STAR-CAD plug-ins) with multiple domains (=solid geometries). Then very complex parts can be sub-divided into domains and each domain can be a separate solid, fluid etc, and also can be a rotating frame and/or porous etc.

Then auto build tet or hybrid meshes and solve/p.proc. within STAR-Design.
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