Question #699605 on Yade changed:
https://answers.launchpad.net/yade/+question/699605
Status: Answered => Open
Fedor is still having a problem:
Thank you very much, but whether I use makeCloud packing, can I avoid the
particles intersections or not?
Big thanks once again for your previous elaborate reply
Sent from my iPhone
> On 24 Nov 2021, at 02:25, Jan Stránský <[email protected]>
> wrote:
>
> Your question #699605 on Yade changed:
> https://answers.launchpad.net/yade/+question/699605
>
> Status: Open => Answered
>
> Jan Stránský proposed the following answer:
>> but I thought that orthogonal packing would have turned into hexagonal
> packing
>
> it remains orthogonal.
> Under the loading conditions, the packing seems to be stable like that.
>
>> But now I realized that change of porosity occurs thank to
> intersection (overlapping) particles. Does my suggestion make sense?
>
> yes.
> (There have been some discussions about interpretation of such results and
> that porosity computed in this way may not have physical meaning, but it is
> another topic)
>
>> But in the real soil porosity changes due to particles compaction not
> intersection.
>
> yes, a more realistic packing should behave like that
>
>> But again when I started working with initial script I obtained good
> relation pressure/porosity
>
> what is "initial script"? The one you linked?
> If so, there is hexagonal packing. As the periodic cell is cubic, the space
> is not fully filled and the spheres have some freedom to move, unlike in the
> case of the orthogonal packing.
>
>> but when I added E , I was confused.
>
> E is of course present (although it is hidden) also in the original
> script, with the default value 1e7.
>
> Cheers
> Jan
>
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