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Axisymmetric solidDisplacementFoam Run

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Old   September 21, 2011, 11:06
Default Axisymmetric solidDisplacementFoam Run
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Hisham El Safti
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Hi Foamers,

I did a very simple axisymmetric run with solidDisplacementFoam. The mesh was generated in Gmsh. I got very strange output: The axis (left) has an X-displacement value???? This is not OK. I attach the files and an image. If you know something about it, please tell me what I did wrong?


Best regards,
Hisham El Safti
Attached Images
File Type: jpg Triaxial.jpg (15.2 KB, 10 views)
Attached Files
File Type: gz TriaxialTest.tar.gz (69.5 KB, 6 views)
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Old   September 21, 2011, 12:41
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I found I left the planeStress switch on. I turned it off but still the same behaviour.


Any clue???
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Old   September 21, 2011, 15:47
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The problem does not exist using blockMesh

I guess with Gmsh the problem is how to define the axis as an empty BC (among other errors in my boundary & D/T files)

I'll post here if I found how to do it with Gmsh
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Old   September 22, 2011, 05:55
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I got it to do it as expected thanks to another post by elorriaux: in this thread

Quote:
Hello,

i suppose you have followed the wiki instructions and checked the different constraints : http://openfoamwiki.net/index.php/Contrib_MakeAxialMesh

As you have already your model in gmsh, you can directly revolve your mesh in gmsh :

- rotate -2.5 your plane from your main 2D plane
- extrude (revolve) 5
- save mesh
- gmshToFoam

I've already done that with gmsh, it works fine.

You can also have another solution by revolving your mesh in OpenFoam with the extrudeMesh tool, but it's not the easier way to do, i think.

Good luck.
Problem solved, now the X disp is zero at the axis as expected
Hisham
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