INITIAL MESH SIZE FOR AUTOMATIC CONVERGENCE MESHING

[joseiochoam]

Dear John and All, if you could help me,

I´m trying to apply automatic local refinement to my model, and I have a question. I start with default mesh size (55 mm for my model) and the maximum stress (von Misses) that I obtain is about 84 MPa. But if I start with a smaller mesh of 30 mm (for general mesh is the result that I obtained by manual mesh convergence), and that apparently it seems a tighter and "nicer" mesh, then the stress value I get is higher (more than 100 MPa). What is the correct option? May I always start with the default mesh or I have to use other size mesh to start?

I´m using 10 interations and 5% as stop criteria . Thank you! (please find below enclosed both results).

[EFLAamo]

I would change the growth parameter and refinement in the general mesh settings to get smoother transition from corners. You can also apply refinement on edge or face if you want to keep the general size 55 mm but enhance it around specific features, but the Growth Rate would need to be adjusted for smoother transition.

Kind regards,
Aðalsteinn