Question #295521 on Yade changed:
https://answers.launchpad.net/yade/+question/295521
Status: Open => Answered
Bruno Chareyre proposed the following answer:
>[1] Are there anything wrong in my understanding of contact normal
distribution?
Looking at fig.2, your maths are wrong for sure. I can't tell where exactly.
Even figs.3 and 4 are weird, the extrema are like shifted by pi/4 from what is
expected with vertical+horizontal walls.
>[2] Or Yade has its own pattern in defining the contact normal?
Not at all.
Bruno
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