boon chiaweng a écrit :
May I know why the relative velocity is corrected again in the contact law?
We've already accounted for periodicity for the velocity in Newton Integrator.
Cundall had to do the correction for relative velocity because he was only
updating positions (not velocity). I may have missed something in YADE.
Hi,
A body "b" is virtually duplicated in all periods. If the period is
deforming, each duplicate has a different velocity in the global
coordinate system. This is why we have to shift the velocity difference
(b1->vel - b2->vel), in order to define relative velocities as if the
bodies were in the same period. If they are already in the same period,
there is no shift.
Bruno
_______________________________________________
Mailing list: https://launchpad.net/~yade-users
Post to : [email protected]
Unsubscribe : https://launchpad.net/~yade-users
More help : https://help.launchpad.net/ListHelp
