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[Jan Stránský <question403169@xxxxxxxxxxxxxxxxxxxxx>]

Question #403169 on Yade changed:
https://answers.launchpad.net/yade/+question/403169

Jan Stránský proposed the following answer:
thanks, the motivation why to use PBC is clear. Just that they might not
reflect the reality in the best way (like failure under uniaxal
compression).. The other points I mentioned also may play some role

You can try to run several simulations for each size and do some statistics
(average and standard deviation). I have tried your script with 10000 and
40000 particles and the results were not "dramatically altered", maybe
averaging a few runs would give you better answer that just comparing two
individual simulations. If you did it already and the results for different
sizes differs a lot, you can be pretty sure that the number of particles is
not enough to obtain "steady" results.

cheers
Jan


2016-10-23 9:53 GMT+02:00 liukeqi <question403169@xxxxxxxxxxxxxxxxxxxxx>:

> Question #403169 on Yade changed:
> https://answers.launchpad.net/yade/+question/403169
>
> liukeqi posted a new comment:
> Hello,
>
> I want to use YADE to couple with FEM software, just like the
> "Multiscale FEMxDEM".
>
> So I need use YADE model with periodic boundary as an RVE. The RVE
> should be small enough to reduce the  computation cost.
>
> That is why I want to know how many number of bodies in YADE model with
> periodic boundary will lead to a steady result.
>
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