yade-users team mailing list archive

[kan <nicessgg@xxxxxxxxx>]

Hi, Dear Jerome,

Thank you for your instruction.
In my contact model, I use the bonded-particle model, so I just assume the
cohension force is modeled in the bond. In that case, the parameter of
cohension c is not explicit shown in the model. maybe it is the problem of
my code.
I will read the code and study how it is modeled in YADE.

Thanks a lot.
kan


On 6/5/08, yade-users-request@xxxxxxxxxxxxxxxx <
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>   1. How is the cohesion treated in YADE? (kan)
>   2. Re: How is the cohesion treated in YADE? (Jerome Duriez)
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> Message: 1
> Date: Wed, 4 Jun 2008 14:56:28 -0500
> From: kan <nicessgg@xxxxxxxxx>
> Subject: [Yade-users] How is the cohesion treated in YADE?
> To: yade-users@xxxxxxxxxxxxxxxx
> Message-ID:
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>
> Hi,
>
> is the cohesion property of some kind of material (like rock) treated in
> YADE?
> if so, how it is modeled? bonded model?
>
> Thanks.
> Kan
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> Message: 2
> Date: Thu, 05 Jun 2008 10:21:44 +0200
> From: Jerome Duriez <duriez@xxxxxxxxxxxxxxx>
> Subject: Re: [Yade-users] How is the cohesion treated in YADE?
> To: yade-users@xxxxxxxxxxxxxxxx
> Message-ID: <4847A218.8040504@xxxxxxxxxxxxxxx>
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>
> >
> > is the cohesion property of some kind of material (like rock) treated
> > in YADE?
> > if so, how it is modeled? bonded model?
> >
>    Hello. It depends on the contact law you use...
>    For example you could have cohesion in CohesiveFrictionalContactLaw
> (see the files in pkg/dem/Engine/StandAloneEngine/). For each
> interaction a value of cohesion "c"  named in fact "shearAdhesion" is
> computed depending on a caracteristic "shearCohesion" (member of the
> class "CohesiveFrictionalRelationships) and on the radii of the bodies
> in contact.
> This value of cohesion will then be used for computing a maximum value
> of tangential contact force : Ftmax = c + Fn * tan(phi).
>
> Jerome
>
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