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Re: [Question #699589]: i.geom.normal is not normalized (unit) vector from the branch vector (for the case of sphere-sphere contact)

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Zhicheng Gao <question699589@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 22 Nov 2021 14:35:39 -0000
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Question #699589 on Yade changed:
https://answers.launchpad.net/yade/+question/699589

    Status: Answered => Open

Zhicheng Gao is still having a problem:
Thanks, Jan
 
>you are printing TOTAL force, not normal force. If i.geom.shearForce is non-zero, then you naturally get non-parallel vector
I have modified it to print("force",i.phys.normalForce）and I found out that it was my mistake, body 3 is a wall, not a particle. I checked the other contacts and they all met the parallel conditions. The question now is why this phenomenon occurs on the wall.
 
Best wishes
Gao

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