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overlap of polyhedral particles

Asked by feda

Hello,
I'm trying to simulate the gravity deposition of polyhedral particles, but, after reaching low unbalanced forces, I can visually notice some overlaps between particles (non-negligeable) even when increasing the stiffness. I am actually wondering if anybody has faced the same issue with similar simulations or if there is another way to minimize inter-particles overlap when dealing with polyhedra.
Thank you,
Feda

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Jan Stránský (honzik) said : 		#1

Hello,

please provide a MWE [1].

> even when increasing the stiffness

what values have you tired?
try to increase more :-)

by default, the repulsive force between polyhedrons is proportional to the overlapping volume, which might be "very small" but "visually noticeable". You can set the volumePower [2] to 1/3. or even less to get higher forces for smaller overlapping volume.

cheers
Jan

[1] https://yade-dem.org/wiki/Howtoask
[2] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.Law2_PolyhedraGeom_PolyhedraPhys_Volumetric.volumePower

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