yade-dev team mailing list archive

[Václav Šmilauer <eudoxos@xxxxxxxx>]

> 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.