Interparticle Forces for Dem by Md Simulations
نویسندگان
چکیده
One of the ingredients in Granular Dynamics (or DEM) is a description of interparticle forces. In this paper the effect of surface roughness on Hamaker and liquid bridge interactions is investigated. Three different models are used (excluded volume, stochastic roughness and explicit asperities). In general, the latter two give similar results. Roughness decreases interactions up to several orders of magnitude for rigid surfaces. To validate the analytical results on liquid bridge interactions at low humidity, molecular dynamics simulations were also performed on model systems.
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