Question #657114 on Yade changed:
https://answers.launchpad.net/yade/+question/657114
Status: Open => Answered
Jan Stránský proposed the following answer:
Hi Luc,
I don't know about such function.
I did it some time ago. I just used average strain over "suitable" particles,
strain being
strain = (distance(pos)-distance(refPos)) / distance(refPos)
where distance was the distance from central axis (cylinder sample) or plane
(box sample). A tricky part was to define which particles are "suitable" for
the computation. That very near the axis had negative influence, as well as
those "crushed away" from the surface and flying away. I choose those roughly
half-way from the axis to surface.
HTH
Jan
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