yade-users team mailing list archive

[Jan Stránský <honzik.stransky@xxxxxxxxx>]

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 <gladky.anton@xxxxxxxxx>

> 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 <jiaoliqing@xxxxxxxx>:
> >  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
> >
> >
> >
> >
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