[Gmsh] gmsh as a pre-processor for calculix

[Christophe Geuzaine]

Roland Tollenaar wrote:
> Hi,
> 
> Has anyone got some experience with using gmsh as a pre-processor for 
> calculix.
> 
> 99% of the elements in the mesh generated by gmesh are classified as 
> "bad elements" by cgx/ccx and jacobian has nonpositive determinant.
> 
> Advice would be welcome, evidently I am doing something wrong.....
> 

1) use "Optimize" in the mesh menu. You can check the quality in 
Tools->Statistics->Mesh (Gamma).

2) maybe your mesh format conversion routine saves the elements with a 
wrong volume sign (it depends on the convention used...)


> Regards,
> 
> Roland
> 
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> 


-- 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science
http://www.montefiore.ulg.ac.be/~geuzaine