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Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

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Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

Posted by Costas at August 19. 2019

Hi,

I am working on a geometry/mesh with pipe bends connected in a kind of rectangular shape. I used divided disk and extrusion along path in order to create my pipe geometry though I have a problem when I try to do the 3D mesh.  Basically I want it to be hexahedral so I select the Hexahedron algorithm for 3D, Quadrangle mapping for 2D and Wire Discretisation for 1D. When I tried to compute the mesh I get the error message for the Hexa_3D algorithm #530(Solid) subshape "Invalid input mesh. Can't find 8 corners of a block by 2D mesh". I suppose the 8 corners that says is for the divided disk vertices. Do you have any suggestion how else can it be interpreted and any ideas how can I fix that?

Thank you in advance,

Best regards,

Costas

Re: Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

Posted by Saint Michael at August 19. 2019

Hi Costas

Could you share your study?

St.Michael

Re: Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

Posted by Costas at August 19. 2019

Hi St. Michael,

Thank you for your response. Can I share the study in a private email since it is my project work?

Costas

 

Re: Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

Posted by Saint Michael at August 19. 2019

Yes. Put it in some accessible place and send me its URL via the form that you see when visiting my forum profile (click my icon and fill Subject ans Message).

St.Michael

Re: Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

Posted by Costas at August 19. 2019

Thanks. I have messaged you the link

Re: Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

Posted by Saint Michael at August 20. 2019
The geometry can't be meshed by Hexahedron (ijk) because it does not consist of blocks but of closed pipes. To make it suitable for Hexahedron (ijk), divide (Partition) it by planes you already have in your study.
St.Michael

Re: Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

Posted by Costas at August 21. 2019
Thanks a lot for the advice! I appreciate it. It solves the problem though is it more wise to partition the wireframe with the planes before the extrusion along path or after?
 
Costas

Re: Error_Invalid input mesh. Can't find 8 corners of a block by 2D mesh

Posted by Saint Michael at August 21. 2019

Yes, dividing the path is more practical.

St.Michael

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