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TOPIC: error : GEOELT - DETERMINANT NEGATIF

error : GEOELT - DETERMINANT NEGATIF 9 years 3 months ago #18008

  • Armovry
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Hello,

I can't run the model I've built because of the joined error, but the element 113 (node or mesh) seems to be ok with no negative value so I don't understand...

Does someone has an idea about the problem ?

Thanks !
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error : GEOELT - DETERMINANT NEGATIF 9 years 3 months ago #18009

  • c.coulet
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Hi
This means you have a problem with your mesh.
maybe you could post an image of the element 113 or join the mesh to your post in order to chech it.

Regards
Christophe
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error : GEOELT - DETERMINANT NEGATIF 9 years 3 months ago #18010

  • Armovry
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Hi,

Thanks for your quick reply !

Here is an image of my mesh around the element 113. Indeed the element 113 looks strange, but I have noticed other ones with the same look and which are not indicated as errors...

I have built my mesh with Matisse and when I checked it with the specific Matisse's command, it was ok... But apparently not... Do you know a mean to check it well ?

Best regards
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error : GEOELT - DETERMINANT NEGATIF 9 years 3 months ago #18011

  • c.coulet
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Hi
it looks like you have some rounding in your Y-coordinates that generate flat triangle.
Maybe you have to shift your mesh to keep the accuracy...

Hope this helps
Christophe
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error : GEOELT - DETERMINANT NEGATIF 9 years 3 months ago #18012

  • Armovry
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Hi,

Indeed it was a mesh problem that I've just solved. I build my mesh with Matisse but Matisse has problems with too long coordinates and cut them when generating the TELEMAC mesh, which explains the flat triangle. So I cut my coordinates before building my mesh and no more problems !

Thanks for you help !
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