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[Chiara Modenese <question153042@xxxxxxxxxxxxxxxxxxxxx>]

Question #153042 on Yade changed:
https://answers.launchpad.net/yade/+question/153042

Chiara Modenese proposed the following answer:
I better clarify what I said. If, after having reached your goal porosity,
you unload your sample, then obviously you also change porosity itself. I am
not sure how much though. Maybe someone else can comment on this? Am curios
myself.

Cheers.
Chiara

On 16 April 2011 16:31, Chiara Modenese <
question153042@xxxxxxxxxxxxxxxxxxxxx> wrote:

> Question #153042 on Yade changed:
> https://answers.launchpad.net/yade/+question/153042
>
>     Status: Open => Answered
>
> Chiara Modenese proposed the following answer:
> Hi Sergei,
>
> for something already implemented, I think you can have a look at
> randomDensePack
>
> https://yade-dem.org/doc/yade.pack.html?highlight=randomdensepack#yade.pack.randomDensePack
>
> I think there are many methods which have been published, both static
> and dynamic ones, to achieve what you require. If you decide to go for a
> dynamic method, I guess the limit is that you will not be able to
> perfectly reach a stress free condition. If you need a particular PSD,
> you could do everything in a py script directly, where you would
> generate the sample you want, load it until your goal porosity and then
> unload it until you reach very low stress level.
>
> Note that some researchers use interparticle adhesion properties in
> order to relax the system and get some stress free condition before the
> actual tests start. It pretty much depends on your needs, but I hope
> this helps a bit.
>
> Chiara
>
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