I'm trying to model a progressive collapse fenomena thought a reinfoced concrete subassembly in abaqus. It is suppose that when i run a Satandar analysis in abaqus, the velocity of applying load doesn't matter however, when I change de setp tieme period and the amplitude the result change highly.

I tryied to do it in Abaqus explicit dynamic with a apply velocity 0.416 mm/s however it give me displacementes in the other direction. I'm confuse about how to model a quasi-static analysis in abaqus considerering non linearity because i need to apply 1200 mm downwoard.