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Re: [Question #271097]: Cohesive model description in Yade

 

Question #271097 on Yade changed:
https://answers.launchpad.net/yade/+question/271097

    Status: Open => Answered

Bruno Chareyre proposed the following answer:
Hi Alexander,
Arguably, the documentation of Law2_ScGeom6D_CohFrictPhys_CohesionMoment is short (did you read it [1]) but it actually answers your questions.

>how cohesion forse depends on destination [distance?] between particles

Exactly like in the non-cohesive model, linearly.

>formulas for cohesion and non-cohesion forces

there is no such distinction. There is a contact force, bounded by
values computed based on friction and/or cohesion parameters. The
details are in the doc.

>when cohesion bond breaks

It breaks when contact force exceeds the bounds mentionned above, by
definition.

You may check Bourrier2013 where some more equations are given. 
Regards
Bruno

[1] https://yade-
dem.org/doc/yade.wrapper.html#yade.wrapper.Law2_ScGeom6D_CohFrictPhys_CohesionMoment

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