Dont integrate rotation till certain torque?

Hi,

I had some problems with the epsd2 rolling model. If you simulate a specimen and load it, unload it and reload it, you will get a strange behaviour that is caused by saving of energy due to the rotational spring of the rolling model. So I decided to use the cdt model. The only problem of the cdt is that, if it is implemented like in J. Ai, J. Chen "Assessment of rolling resistance models in DEM", there occur small oscillations at no rolling state.
Now my question is, would it be possible to stop integration of rolling until a certain torque on the particle is reached?
I mean this would speed up calculations and maybe will avoid the 'creeping' phenomenon that is observed by J. Ai.

Many thanks in advance
Joshua