3D Tetra Elements not showing in LS-PrePost/DYNA
Altair Employee Hello,
I imported my geometry into HyperMesh and used automesh to generate quads on the surface.
I then used volume tetra to generate 3D tetras and then deleted the 2D elements on the surface.
When I export my model to DYNA keyword file and open it in LS-PrePost, it is missing the extra pyramid elements at the surface.
E.g. 2D view in HyperMesh:
View of surface using mask option in HyperMesh.
Surface in LS-PrePost:
Any thoughts on why this is? How can I retain the elements at the surface?
Thanks,
Petros
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Pyramid elements are supported in LS-DYNA, but Hypermesh can not export them to DYNA key output.
I have to play with template to add this element type.
Altair EmployeeThanks Tinh, I don't want trias at the surface though.
Thanks Tinh, I don't want trias at the surface though.
You don't want trias at surface and you can not make pyramid for your LS-DYNA. So what do you do now then?
Maybe he want to keep quads as a cover comp
@PetrosYou can split pyramids into tetras by panel 3d>split>solid elements
switch to 'split into tetras'
Altair EmployeeThank you both for your suggestions.
Keep 'quads' at external faces and make 'tet' in internal volume? That does not make sense from point of view of FEA !!!
Yeah, it seems to be not continous!
Don't understand
Shift F6 split quads into trias before tetramesh