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Re: [Question #693506]: How to get tension force of a cohesive contact

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Leonard <question693506@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 20 Oct 2020 18:50:45 -0000
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Question #693506 on Yade changed:
https://answers.launchpad.net/yade/+question/693506

    Status: Answered => Open

Leonard is still having a problem:
Hi Jan,

I test your idea with two particles which works really fine!

I just have a question: For example, for one interaction in the model, i.phys.normalForce.dot(i.geom.normal) is positive which represents that it is compressive, does this apply for all the other interactions in the model? I.e., for other interactions whose  i.phys.normalForce.dot(i.geom.normal) is positive, is the force compressive as well?
I have this question because in my impression, the direction of contact normal unit vector "n" is arbitrary, not always orientates to the direction of compression.

Thanks
Leonard

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