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[Bruno Chareyre <question404455@xxxxxxxxxxxxxxxxxxxxx>]

Question #404455 on Yade changed:
https://answers.launchpad.net/yade/+question/404455

Bruno Chareyre proposed the following answer:
The porosity at equilibrium is not single valued, it is a range of possible porosities. Which one is reached along a particular loading path depends on every possible factor in principle, including numerical damping. 
As Jerôme suggests, you could introduce numerical daming only in the preparation phase if it helps reaching a particular porosity.
Alternatively, for the same purpose, decrease the upper bound of wall velocity, wallMaxVel iirc (or the growth factor if internalCompaction=True); this will compact more gently then give looser states.
Bruno

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