yade-dev team mailing list archive

[Václav Šmilauer <eu@xxxxxxxx>]

If the subvolume is a box (or parallelepiped in general), you could 
weight the contribution rather easily by length of the interaction that 
is inside that volume; i.e. interactions fully inside would have w=1, 
one that would be 1/3 of its length inside would have w=1/3 and such. If 
you want to compute the stress tensor in multiple adjacent subvolumes at 
the same time, it would be quite efficient, i.e. splitting the periodic 
cell in a regular grid of subvolumes, then just finding which subvolume 
it belongs to.

Hope I understood what you are after.

v.


>     Method2 (easier) : define a group of spheres and compute weighted
>     average stress using per-body stresses (bodyStressTensors in
>     utils). You'll have to define the total volume of the subdomain
>     though, which is a bit more tricky than with method 1.
>
> I think that defining the subvolume will not be a problem. But what 
> happens if the branch vector of the interaction crosses the subdomain? 
> Can this be an issues?
> Chiara
>
>
>     Cheers.
>
>     Bruno
>
>
>
>
>     On 09/02/11 12:03, Chiara Modenese wrote:
> >     Hi,
> >     I would like to compute the average stress tensor into subdomains
> >     of periodic cell. Any hint how to do that and where to add it (is
> >     Shop the best place?)?
> >     Thanks, Chiara
> >
> >
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