I just meshed a part and then did a "Mesh Plot" of the "Aspect Ratio." One element has an aspect ratio of 0. Doesn't that mean I have a triangle instead of a tetrahedral element? Is this mesh junk?
I think it means an element has nearly no width, i.e. a 2D element that is almost a line element. Might also be a tet element with no height.
Find the offending element, add some mesh control, try again.
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