When I do a simple meshing of a sphere, I see some elements have nonplanar faces (see attached figures, nonplanar faces are highlighted by dotted circles). Strangely, it doesn’t happen with older CUBIT versions. I would be grateful for any suggestions! I use Trelis 16.3 and following script:
create sphere radius 4
webcut body all with plane zplane offset 0
webcut body all with plane yplane offset 0
webcut body all with plane xplane offset 0
imprint all
merge all
volume all size 1
volume all scheme tetprimitive
mesh volume all
“The difference you are seeing is a result of the switch from smooth shading to flat shading for mesh faces. That change was intentional, mainly to see a shading differences between elements if the black lines are not drawn. So, it seems a side effect is the lighting difference across the surface of a single non-planar quad.”
We are discussing the possibility of doing flat shading only if edge visibility is off.
