> Whatever the method you use to damp particle movements I suspect the > system to reach a vanishing value of kinetic energy asymptotically. > Thus, if it the case, you can wait a very long time to obtain values > of kinetic energy as small as you want... Sorry to be unclear: the kinetic energy doesn't decrease from the point where it hits some bottom line (around 1e-9 in this case), and oscillates around this value. I suspect the way Cundall damps motion to be blamed. Well, I will try and see. Best, Vaclav > > But DEM is not the only method to perform discrete computations and > static method based only on geometrical aspects without integrating > Newton's law, allow to perform very accurate computations (for > instance about the definitions of contact). See for intance the works > done by Roux and Combe.
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