How to insert Descending Branch part (Residual Part after the peak load) in Concrete stress strain.
I model the Concrete MISO model in the stress strain (Engineering Data Part) but I can't insert any descending branch. Ansys said that the gradient of the stress strain should not be negative. Hence I only can insert from 0 to the maximum stress without my descending part. I need it since I look for its ductility. What should I do.?