yade-users team mailing list archive

[chiara modenese <c.modenese@xxxxxxxxx>]

Hi Liqing, thanks for your opinion.

I think that Law2_ScGeom6D_CohFrictPhys_CohesionMoment is the most updated
between the two. To me it is worth to maintain it. I will do it with
pleasure although I will not use it directly. I am not exactly a fresh user
as it is almost a year since I started to work with Yade. I see what you
mean when you say there are lots of parameters you might not want to use
(like cohesion and creep in this case). In any case, you always need to test
the model to be sure it works (only then the model can be trusted, as you
say). As a note, Vaclav introduced a LawTester recently with this scope in
mind.

Cheers. Chiara


2010/11/25 jiaoliqing <jiaoliqing@xxxxxxxx>

> Hi, Chiara,
>
> I have ever used cohesivefritionalcontactlaw by Bruno. Because of having
> lots of things, it isn't enough clear for a fresh user. I used it for about
> half of year, but I am still confused with some parameters in this model.
> So, I prefer the other one that contains parameters means clearly and easy
> to get the related supported documents. That model can be trusted. If you
> have the experience of using other clear model, it may be easy to use this
> one.
>
> Cheers
> Liqing
>
> At 2010-11-24 02:12:50，"Luc Sibille" <luc.sibille@xxxxxxxxxxxxxx> wrote:
>
>
> >Hi Chiara,
> >
> >Personnally, I use the cohesionlessMomentRotationLaw and I am happy with
> >it.  Depending of what you want to do you may have to make one or two
> >modifications as for instance define a scale value of the plastic moment
> >treshold (I dont have the code here, but if my memory is good, there is
> >a plastic moment treshold defined but this latter is not scaled).
> >You may need also to add somewhere a line like this, depending on the
> >yade version you are using (problem with quaternions):
> >if isnan(angle) then angle=0
> >
> >But maybe Bruno will tell you that he made a lot of cleaning in the
> >cohesivefritionalcontactlaw (I am not sure about the name of the law)
> >and that you should use this one ;-)
> >
> >Personnally, I am not very friend with code, and I like the
> >cohesionlessMomentRotationLaw, because there are only few things in it
> >and it is easy to follow what it is done.
> >
> >Best,
> >
> >Luc
> >
> >chiara modenese a écrit :
> >> Hi guys,
> >>
> >> quick question. A colleague of mine needs to use the linear contact law
>
> >> with moment transfer rotation. Which law in Yade is the most updated and
> >> satisfy these requirements? Thanks, so we avoid duplicates. If there is
> >> something to add/modify let me know, I can do it.
> >>
> >> cheers, Chiara
> >>
> >>
> >> ------------------------------------------------------------------------
> >>
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> >--
> >Luc Sibille
> >
> >Université de Nantes - Laboratoire GeM UMR CNRS
> >
> >IUT de Saint Nazaire
> >58, rue Michel-Ange - BP 420
> >44606 Saint-Nazaire Cedex, France
> >
> >Tel: +33 (0)2 40 17 81 78
> >
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