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Re: [Question #586294]: Uniform Traction Boundary

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From: Bruno Chareyre <question586294@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 24 Mar 2017 08:47:30 -0000
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Question #586294 on Yade changed:
https://answers.launchpad.net/yade/+question/586294

Bruno Chareyre posted a new comment:
Hi,
1) and 2) can work if you have only very small deformations. If the deformations are larger, the "boundary" particles you find in the initial state may not be at the boundary all along the simulation, they will be replaced by others which will soon be ejected from the problem if they don't get the "boundary force" they should.
A clean solution is to have an updated mesh of the contour (a concave hull) and to update the forces on the boundary particles continuously. It is not implemented as is but algorithmic blocks which can be used to get concave hull are present in the code.
Bruno

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