I get a different behavior when I select different numbers of loading steps
I am doing a simple compression test simulation of a mortar cube. It has been defined using solid65 element and as far as I know everything in this aspect works fine. However, I have noticed some peculiarities. The load imposed is a negative vertical displacement, if I only use one loading step, I get a non linear behavior of the element. However, if I utilize more loading steps but the final value is the same as the case before, I get a completely different behavior, In some cases it even remains in the linear range. As I am doing a static structural modelling I understand that each load step is applied statically, so there should not be any concerns regarding a loading speed or rate. I would like to ask your opinion about this, maybe there is something I am misunderstanding regarding loading steps.
Thank you very much for your help.