yade-dev team mailing list archive

[luc scholtes <lscholtes63@xxxxxxxxx>]

Hi Janek,

Have a look at CohesiveFrictionalPM and its derivative (CFpmState, CFpmMat,
CFpmPhys and Ip2_CFpmMat_CFpmMat_CFpmPhys). I think it has what you want
(see Ip2_CFpmMat_CFpmMat_CFpmPhys in particular), and I tried to make its
structure "similar" to ConcretePM (except that it uses ScGeom).

  Cheers

  Luc

2010/7/8 Janek Kozicki <janek_listy@xxxxx>

> Hello,
>
> I need to add two parameters:
>
> - Rolling stiffness coefficient β
> - Moment limit coefficient η
>
>
> Currently β has a fixed value of 2.0 in Ip2_2xCohFrictMat_CohFrictPhys.cpp
> line 52
>
> Where to add it? Should I add it to CohFrictMat.hpp or should I
> derive from this class and name it CohFricRollMat ?
>
> How to name it? rollingStiffnessCoefficient comes to mind. But could
> be also a rollingCoefficient, bendingCoefficient and so on.
>
>
> Currently η has a fixed value at ∞, or am I completely unaware that
> it has been implemented in the code, by someone. It limits the
> maximum value of rolling moment proportionally to Fn.
>
> I remember you discussing that CohesiveFrictionalContactLaw should be
> dissected somehow, into a 2-argument functor, or something else. What
> was that?
>
>
> Last question, why the name Ip2_2xCohFrictMat_CohFrictPhys instead of
> Ip2_CohFrictMat_CohFrictMat_CohFrictPhys. Of course the latter is
> longer. But is there a fixed convention about that? For instance the
> file Ip2_FrictMat_FrictMat_FrictPhys.hpp  definitely breaks this
> convention.
>
> best regards
> --
> Janek Kozicki                               http://janek.kozicki.pl/  |
>
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