What is the procedure to solve the 3D elements failed in warpage and aspect ratio in order to get a good mesh.
Check quality of 2D before making 3D Remesh with smaller size Manual correction
@Q.Naguyen-Dai
Can you please explain manual method.
In fact, I used 'manual correction' sometime on 2D mesh before make 3D TET mesh.
Localize the 'bad' area and try to simplify the geometry.