I make a plasticity test model, a displacement is add to a spring. and 2nd step I removed the displacement, with this model I can see the set of the spring.It worked well if Nlgeom is Off.
But if I “On“ the Nlgeom , the 2nd step will not worked. Here is the model uploaed.The total run time is within 1 min.
Try refining the mesh (and use a hex or hex-dominated mesh - change recombination to avoid getting only wedge elements). Also, use different incrementation settings - increase max increments, decrease initial time increment, and reduce minimum time increment significantly. Finally, make sure that the Nlgeom setting is consistent across both steps.