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Re: [Question #688116]: Is it possible to make bonded particles share the same velocity when using JCFpm?

 

Question #688116 on Yade changed:
https://answers.launchpad.net/yade/+question/688116

    Status: Open => Answered

Jérôme Duriez proposed the following answer:
Hi,

1. I think you have to choose at some point whether you would like your
simulation to involve rigid entities (all components of the entity share
the same velocity, modulo angular velocity) or breakable entities
(entity components have different velocities, and this is the source for
relative displacements and possible breakages)

Breakage can not be described in YADE without prior relative
displacements (hence without different velocities), and it is the same
with Potyondy-Cundall model [*]. The magnitude of relative displacements
/ velocities dispersion is a matter of (stiffness) parameters but they
exist anyway.

(As for 2., scientific journals/conferences might be more suitable than
this technical forum to discuss the validity of the assumptions lying
behind YADE code. Anyway, YADE open-source nature enables one to change
everything !)


[*] https://www.sciencedirect.com/science/article/pii/S1365160904002874

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