yade-dev team mailing list archive

[Anton Gladky <gladky.anton@xxxxxxxxx>]

In the top of my list "todo" is the implementing "bonded particle schema',
like described in http://www.springerlink.com/content/l2306412v1004871/

Vaclav, you think, it is better to implement it in contact geometry classes
mostly?
______________________________

Anton Gladkyy


2010/1/17 eudoxos <eudoxos@xxxxxxxx>

>
>
> -------- Original Message --------
> Subject: Re: [Yade-dev] Is shear incremental calculation verified
> Date: Sun, 17 Jan 2010 08:44:47 +0100
> From: eudoxos <eudoxos@xxxxxxxx>
> To: Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>
>
> I was actually thinking about implementing contact geometry classes from
> scratch, both incremental and non-incremental versions, in such way that
> deformations (normal, shear, twist, bending) would be precomputed in the
> Ig2_* functor, and then just accessed directly from the constitutive law.
> The InteractionGeometry classes themselves would be the same, only the
> functor would make the distinction of absolute/incremental. There already
> was 6dof contect implemented (Dem6Dof_Sphere_Sphere), but it is commented
> out currently; and guess what, it is much cleaner code than the horrible
> mess (sorry) in CohesiveFrictionalContactLaw.
>
> I might do just some part of it, let's see.
>
> Cheers, Vaclav
>
>
> >
> >> From my simulations, updateShearForce is correct (I am able to
> >> reproduce the results obtained by Plassiard et al's paper).
> > Always good to hear this sort of verification! It's also interesting to
> > have rotational friction implemented in Yade.
> >
> >>   When I use the codes in updateShear, the deviator stress I get is
> >> much lower.
> >>
> > Sure it was not due to unconsistent copy/pastes? updateShear is
> > connected to other classes where the computed values are used. The two
> > versions are based on different logics, you can't just switch from the
> > one to the other and expect similar results I think.
> >
> > Bruno
> >
> >
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