Question #643660 on Yade changed: https://answers.launchpad.net/yade/+question/643660
Robert Caulk proposed the following answer: I think the idea of an interaction range is brilliant, it opens up a huge area of functionality that did not previously exist in yade. I too found the sentence in that paper a little brief, so I took some time to derive the equation. Here was my thought process: Worst case scenario is that two maximum-sized particles might be interacting. We want to avoid allowing a minimum sized particle between two interacting particles. So we know the maximum allowable Deq<2*R_min+2*R_max (distance between 2 max sized particle centers with a minimum sized particle in between). And the maximum possible Deq for a given packing Deq = gamma_int*(R_max+R_max). Solving for gamma_int to satisfy both conditions: gamma_int < (R_min+R_max)/(R_max) So in your case (R_max/R_min = 9), your max gamma_int would be 1.11 to avoid overlapping small particles. It is probably worth saying that in my experience you can go a bit above the maximum without seeing any negative consequences. Actually, I have noticed that I [i]need[/i] to go above the maximum to calibrate toughness...hmmm. Cheers, Robert -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
