Thanks Mariog for that very nice opinion. In my own opinion, this elastic-plastic analysis has still many uncertainties like proper boundary condition, etc., so I'm not so confident to rely on this method especially if my system will likely to experience high number of cyclic loading. It's still better to design a system with sufficient factor of safety to have a reliable system rather than pushing the system to it's limit. I can sleep soundly at night.


Any other opinion is highly appreciated.

Cheers!!!