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[Bruno Chareyre <question226112@xxxxxxxxxxxxxxxxxxxxx>]

Question #226112 on Yade changed:
https://answers.launchpad.net/yade/+question/226112

Bruno Chareyre proposed the following answer:
>from simulation to simulation i just want to fill 10,20,...,74 percent
with spheres

74% is really dense, and maybe even impossible for non-overlapping spheres (depends also on the size distribution).
I think makeCloud algorithm gives a maximum solid fraction between 30% and 40% in the best cases.

For denser distributions, randomDensePack can be used. At the same time, this function is silently running a simulation to achieve the dense pack (makeCloud(), then compress), so the parameters must result in a valid simulation setup.
If you have very few spheres in 3D in a peridodic box (less than ~30), the problem is that the period becomes to small compared to spheres sizes, and it breaks the rule that an object must not touch itself.

I'm guessing you hit this barrier now (although you didn't give us the
exact message, please try to always give input/output as clearly as
possible).

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