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Re: [Question #673800]: Doubts about cundall-strack law between sphere-facet interaction

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Bruno Chareyre <question673800@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 14 Sep 2018 07:57:35 -0000
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Question #673800 on Yade changed:
https://answers.launchpad.net/yade/+question/673800

    Status: Open => Answered

Bruno Chareyre proposed the following answer:
Hi,
> i know that facet does not have thickness, but maybe could exist a way to give it, like a wall. Becouse i would like to make a comparison if is possible.

Walls have no thickness either. Boxes have thickness, but it is still completely unrelated to contact behavior.
You could write facet.thickness=10 in python script for a comparison, it will not change the result.

> then a clumped body made of facets can not be considered perfectly
rigid

Along this line nothing is perfectly rigid in yade since all contact models include elasticity. I agree with this view.
The only place where we use a perfectly rigid approximation is when we calculate motion, defined by just translation and rotation.

Bruno

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