Hello Liqing, what shape do you have? one possibility is to generate the packing and then shift particles. E.g. for the spherical shape, each parcticle would be shifted by coeff*(particle.pos - sphereCenter.pos). Then the whole packing would be in the state of some prestress.. But I am not sure if it is applicable to generic shapes.. What materials and +constitutive laws are you using? it might be possible to prescribe prestrain to the interactions.
Jan 2012/12/19 Anton Gladky <[email protected]> > Hi Liqing, > > I would recommend you to use facets, if you need not a planar > form. There are some difficulties with them [1], but if you can > neglect that, they work fine. > > Please, use the "Questions" interface [2] next time, when you ask such > questions. > > Cheers, > > Anton > > [1] https://bugs.launchpad.net/yade/+bug/850864 > [2] https://answers.launchpad.net/yade > > 2012/12/19 Liqing Jiao <[email protected]>: > > Dear all, > > > > I would like to consider the confinement in my model. I know that one > way to > > apply the confinement is using the wall with initial stress. But it is > not > > feasible for my model, since the shape of the boundaries will be > changed. In > > other words, the boundaries are not always plain. So I wondering if we > can > > apply the confinement on the particles about the boundaries. May I know > have > > you anyone tried this way to apply confinement before or other ways > without > > walls? Any responses will be appreciated. > > > > Merci! > > Cheers, Liqing > > > > > > > > > > _______________________________________________ > > Mailing list: https://launchpad.net/~yade-users > > Post to : [email protected] > > Unsubscribe : https://launchpad.net/~yade-users > > More help : https://help.launchpad.net/ListHelp > > > > _______________________________________________ > Mailing list: https://launchpad.net/~yade-users > Post to : [email protected] > Unsubscribe : https://launchpad.net/~yade-users > More help : https://help.launchpad.net/ListHelp >
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