I'm working with adding both tangential and rolling models to LIGGGHTS so they work with JKR adhesion.
I have some problems however now to validate if the models are working correctly so I was wondering if anyone has a recommendation on how to do the validation on this type of models?
Is it possible to disable for example rolling of a particle? When I develop the tangential model I would like to see when it starts to slide and when it doesn't. Right now, however, the particles can still start to roll so I was wondering if its a good way to prevent this for example not allowing any rotations of the particles?
Similarly, when I develop the rolling model I would like to not allow the particles to slide at all so that they only rotate.
An obvious solution would maybe be to just set a very high rolling or sliding resistance but this is not really feasible for me since the resistance will still be almost zero (Due to Fn is almost zero) when the contact radius is close to the equilibrium contact radius for the JKR model.