Question #189897 on Yade changed:
https://answers.launchpad.net/yade/+question/189897
Status: Open => Answered
Chareyre proposed the following answer:
Ali,
I'm the main developer of the triaxial engine you are using, but unfortunately
this "fixedPorosity" feature has been added by somebody else and I never really
understood what it was supposed to do. I'm considering removing it. Don't use
it.
Try using TriaxialStressController or ThreeDTriaxEngine, it will be simpler to
understand their behaviour (see triaxial tutorial in scripts/) than that of
CompressionEngine.
The purpose of these engines is to control precisely stress and strain rate.
Actually, if what you want is just to impose an arbitrary volume to a sphere
packing, why not just moving boundaries to a fixed position? You don't need any
engine for this.
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