Question #403426 on Yade changed:
https://answers.launchpad.net/yade/+question/403426
Status: Open => Answered
Bruno Chareyre proposed the following answer:
Not sure about the sign problem you see.
The 0.5 is because the normal contact spin is obtained by averaging bodies spin.
Bruno
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Question #403426 on Yade changed:
https://answers.launchpad.net/yade/+question/403426
Status: Answered => Open
liukeqi is still having a problem:
Hi, Bruno,
Thanks for your reply. But I still can not understand it. The formulas are
following:
(ΔuT )1 = -uT(last step)×(n(last
Question #403426 on Yade changed:
https://answers.launchpad.net/yade/+question/403426
Bruno Chareyre posted a new comment:
I forgot a multiplication by △t in the above equations. Let "v" be the
rotation increment equal to spin times △t and the equations are correct.
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You received this
Question #403426 on Yade changed:
https://answers.launchpad.net/yade/+question/403426
Status: Open => Answered
Bruno Chareyre proposed the following answer:
Hi,
I understand the meaning my not be immediate but it is actually relatively
simple.
Let w be the spin vector of the grain pair.
New question #403426 on Yade:
https://answers.launchpad.net/yade/+question/403426
Hello,
I read the part "DEM Background" on the YADE website, I confused by the
"shear strain" because I could not understand the meaning of (△uT) 1,(△uT) 2.
I found the similar question "Questions about
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