Hi, I need to reach as much as possible equilibrium state, with zero motion. When using cundall's damping, I get kinetic energy dropping from 1e-3 to 1e-9, but not any lower. I suspect the cause to be the fact that cundall's damping makes force greater against the current velocity; that can lead to oscillations at the frequency of 2 iterations, if the force is such that it reverses the sense of velocity during one interation, then again etc. I suspect the same will be true for the unbalanced force measure.
1. Is someone using some sort of viscous damping to avoid this? 2. I could try to make cundall's damping to always diminish the force iff the coefficient is <0 (.e.g damping==-.3 would mean to always reduce the force to ×.7), what do you think? Regards, Vaclav _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
