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Message #17253
Re: [Question #668213]: How to make sure that the interaction between spheres and containers is frictionless
Question #668213 on Yade changed:
https://answers.launchpad.net/yade/+question/668213
Status: Open => Answered
Jérôme Duriez proposed the following answer:
Hi,
Honestly I did not go in details through your whole post :-) but I'd
still make the following comments
1- I think you could consider that in YADE / DEM, properties for a
single entity (a Discrete Element) do not exist outside mass and
inertia. Then, the question is more about : are the soil-container
contact properties really different from the soil-soil ones ?
And if yes, does it really matter to define one external layer of
interactions (the soil-container one) that has very different properties
than all other interactions in the bulk ?
2- Checking the shape of interacting bodies can be done in the source code of one single Ip2 if you need to. You got one example at [*]
3- Are you then interested in shear stress (original post) or normal force and normal stress (post #2) ?
4- I still think material flowing outside a experimental or numerical device is a problem :-) If I understood correctly, I would just extend my plates if I were you (you may give a look to SimpleShear FileGenerator from YADE graphical user interface)
Jérôme
[*]
https://github.com/yade/trunk/blob/4167bd08a304167375ac38bca441aa30e8d4d673/pkg/dem/Law2_ScGeom_CapillaryPhys_Capillarity.cpp#L101
to L103
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