Ok! Thanks a lot! 

El miércoles, 19 de noviembre de 2014 22:40:40 UTC+1, Vladimír Lukeš escribió:

Hi Patricia,

the problem is in the .mesh file, all elements are stored as
tetrahedrals! Probably, the export of hexahedrals from gmsh to the .mesh
format is not correct.

Regards
Vladimir

On 11/19/2014 09:51 AM, patri...@upf.edu wrote:
> Hi!
>
> I am trying to simulate a hyperelastic 3D cylinder with hexahedral
> elements. I did the mesh with gmsh and save it as a .mesh file. When I
> do it with tetrahedral elments everything works perfect, but when I try
> to simulate the mesh with hexahredal elemnts, SfePy can not read well
> the mesh and give me this error:
>
> sfepy: warning: bad element orientation, trying to correct...
>
> sfepy:   warning: bad element orientation, trying to correct...
>
> RuntimeError: elements cannot be oriented! (0, 3_4)
>
> I've attached the .mesh file with hexahedral elements
>
> Thanks a lot for the help!
>
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