[deprecated list] Can boxes interact ?

[Jerome Duriez]

Hello everybody.
A small question just for curiosity : can boxes in Yade interact ??
I understand how spheres interact, how one box and one sphere
interact but I do not think that something is written so that boxes
interact (eg I do not see anything like
InteractingBox2InteractingBox4....ContactGeometry) ?
I do not need that boxes interact, it is just to be sure.

Thanks

Jerome

[Václav Šmilauer]

Post by Jerome Duriez
A small question just for curiosity : can boxes in Yade interact ??
I understand how spheres interact, how one box and one sphere
interact but I do not think that something is written so that boxes
interact (eg I do not see anything like
InteractingBox2InteractingBox4....ContactGeometry) ?

That's right, there is no interaction between boxes defined. Just in the
ErrorTolerant contact law (RotatingBox) but I am not sure how accurate
that algorithm is.


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[Jerome Duriez]

Thanks for the answer. A still curiosity question about the same topic
(consequently, I didn't break the thread) :
- in InteractingBox2InteractingSphere4SpheresContactGeometry, the choice
is made to set for the box a value of radius (which will be used to
compute rigidities) equal to 2 times the radius of the in-contact sphere.
Is there a reason to choose this "2" ??


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[Václav Šmilauer]

Post by Jerome Duriez
Thanks for the answer. A still curiosity question about the same topic
- in InteractingBox2InteractingSphere4SpheresContactGeometry, the choice
is made to set for the box a value of radius (which will be used to
compute rigidities) equal to 2 times the radius of the in-contact sphere.
Is there a reason to choose this "2" ??

I think that is SDEC heritage and I had a discussion on this (with Bruno
IIRC) once; there is no real reason for this particular value.
Personally, I wouldn't use boxes in my simulations, since we have Facets
which are much more general, at least for non-dynamic
bodies/surfaces/whatever.




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