Why does FEM meshing doesn't generate volume elements in some cases

About the development of the FEM module/workbench.

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vejmarie
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby vejmarie » Sun May 15, 2016 9:18 pm

The good news is that we found the root cause of the issue and fixed it (thanks to ickby). The issue was coming from the fact that each MESH was initializing a Generator within SMESH while it shouldn't and that a single Generator should be initialized. The code has been modified to support this and it works perfectly without the hugly hack I had ;)
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bernd
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby bernd » Mon May 16, 2016 6:27 am

guys these are pleasant news ...

BTW with the following commands Calculix can be installed on debian jessie

Code: Select all

wget http://ftp.ch.debian.org/debian/pool/main/c/calculix-ccx/calculix-ccx_2.10-1_amd64.deb

apt-get install libarpack2 libspooles2.2

dpkg -i calculix-ccx_2.10-1_amd64.deb

# testrun
ccx


vejmarie
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby vejmarie » Fri May 20, 2016 8:15 pm

bernd wrote:guys these are pleasant news ...

BTW with the following commands Calculix can be installed on debian jessie

Code: Select all

wget http://ftp.ch.debian.org/debian/pool/main/c/calculix-ccx/calculix-ccx_2.10-1_amd64.deb

apt-get install libarpack2 libspooles2.2

dpkg -i calculix-ccx_2.10-1_amd64.deb

# testrun
ccx


Hi bernd,

Thanks for the hint ! My last week has been quite busy at debugging my pull request. it did works now. (at least travis build goes through). I might be jetlaged next week but will have more time to jump back on the forum !
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GlouGlou
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby GlouGlou » Thu Feb 07, 2019 6:59 pm

I Guess I've got the same issue. But I unable to find the reason with my model. Is someone can give me a hint? thks
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bernd
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby bernd » Fri Feb 08, 2019 10:01 am

Your file does not contain a mesh. Which means I do not know what would you like to mesh. Leave the mesh inside the file, but make a right click on the mesh and clear the mesh. This will delete the mesh data, but since the mesh object could be stay in the analysis. for posting the file on the forum.

bernd

Ahh and the screen for all other to see what we gone talk about.


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bernd
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby bernd » Fri Feb 08, 2019 10:14 am

GlouGlou wrote:
Thu Feb 07, 2019 6:59 pm
I Guess I've got the same issue. But I unable to find the reason with my model. Is someone can give me a hint? thks
If the object Pedestal the one you would like to mesh than it is easy to find the problem. Just make a Part check Geometry and have a look ath the contents of your geometry. There is no solid inside. Means your geometry is a shell not a solid. Thus you get a shell mesh on meshing. If you would like a volume mesh you should pass solid geometry to the mesh object. Screen attached. Furthermore it has self intersections. MAy be they are the reason why you do not have solid geometry. BTW: Even if you would have solid geometry such selfintersections could lead to problems on meshing (could ... means may be, may be not ... ) but that is another story ... First you should pass solid geometry!

bernd


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GlouGlou
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby GlouGlou » Fri Feb 08, 2019 5:47 pm

bernd wrote:
Fri Feb 08, 2019 10:14 am
Nice. That's the reason for the mesh doesn't be consistent. Its carried out with ASS2P and might be a bug. thanks.
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bernd
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby bernd » Fri Feb 08, 2019 8:34 pm

GlouGlou wrote:
Fri Feb 08, 2019 5:47 pm
Its carried out with ASS2P and might be a bug. thanks.
What is ASS2P ?
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Re: Why does FEM meshing doesn't generate volume elements in some cases

Postby Jee-Bee » Fri Feb 08, 2019 9:42 pm

A2P or full name "Assembly 2 Plus" ;)