Hi again. I think I found the problem: somehow I had enforced displacements way too large and the structure deformed enormously until it could not go on and crashed…:

I changed the displacements for the actual forces (I started estimating the former trying to aid convergence…) and increased the nr. of initial substep and everything went smooth and faster:

Now I have to use these results to setup a low-cycle fatigue analysis, which is one of the original intended goals. Being the other one just 20 cycles of a similar load test. In relation to this, I started this other post (->). Do you know how to go about that?

Once more, thanks