How to add interaction forces between particles and walls

Hi everyone

I want to try to simulate a particle absorber (requires box vibration to drive internal ball vibration, through ball-to-ball interaction and ball-wall interaction to achieve vibration reduction) in solid mechanics and particle tracking physics in COMSOL.

However, it has been found that in particle tracking physics, the interaction between particles and walls is described by velocity and does not involve force interactions. I want to know what methods are available in COMSOL to implement this kind of simulation.

Thank you!!!