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Re: [Question #246971]: Attain a specified porosity in a predicate

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Bruno Chareyre <question246971@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 14 Apr 2014 15:51:35 -0000
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Question #246971 on Yade changed:
https://answers.launchpad.net/yade/+question/246971

    Status: Open => Answered

Bruno Chareyre proposed the following answer:
>But I think I can't use the triax engine in my case. Because there
shouldn't be any confining pressure applied on the spheres, the internal
compaction must be disabled.

Hi,
I don't think you have a choice, if you want to control porosity precisely. You need triax engine (it could be also the periodic one). You can always unload the packing to confining pressure ~0 before the predicate thing, so that the contact forces will be null or negligible.
Bruno

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