yade-users team mailing list archive

[luc scholtes <lscholtes63@xxxxxxxxx>]

Try to have a look at CohesiveFrictionalPM with CFpmPhys and CFpmMat which
allow cohesion, tensile strength and moment at contact.

Cheers

  Luc

2010/9/17 焦利青 <jiaoliqing@xxxxxxx>

> Hello,
>
> Yes, you are all right. I mentioned the cohesion-friction model is
> Law2_ScGeom_CohFrictPys_ElasticPlastic. I am sorry, I should point out
> clearly. As your means, If I would like to consider the effect of moment,
> this one is not suitable, isn't it? I know the code of moment algorithm has
> been realized in the Cohesionless one. But, the effect of cohesion must be
> considered in my model. In the conclusion, if both the moment and cohesion
> should be considered, how can I do it? May I have your help? thank you.
>
> Sincerely
> Liqing
>
>
> At 2010-09-16 19:32:15，"Jerome Duriez" <duriez@xxxxxxxxxxxxxxx> wrote:
>
> >Hello,
> >
> >You can find this plastic threshold for the moment in
> >Law2_ScGeom_NormalInelasticityPhys_NormalInelasticity (lines 193 to 202
> >of the .cpp). For what concerns the "cohesion-friction model", I assume
> >that you speak of Law2_ScGeom_CohFrictPhys_ElasticPlastic, which I know
> >less. But a quick look to the .cpp gives me the same feeling than yours,
> >that the moment is always elastic.
> >
> >Jerome
> >
> >Le 16/09/2010 12:40, 焦利青 a écrit :
> >> Hello,
> >>
> >> I found the moment calculation in cohesion-friction model is different
> >> from the traditional algorithm which is listed in the
> >> paper(Jean-Patrick Plassiard etl, A spherical discrete element
> >> model:calibration procedure and incremental response, 209; N. Belheine
> >> etl, Numerial simulation of drained triaxial test using 3d discrete
> >> element modeling; Rolling resistance at contacts in simulation of
> >> shear band development by DEM). In the traditional algorithms, the
> >> slider for rolling starts working if the moment exceeds a value of
> >> "eta* Normal force". However, I cannot find the related code described
> >> it. If no any condition to relax the moment. then the moment will act
> >> all the time. I think it should be wrong. Maybe I haven't found the
> >> right file. May I have your help? Thank you.
> >>
> >> Best
> >> Liqing
> >
> >
>
>
>
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