yade-dev team mailing list archive

[sega <sj2001@xxxxxxxxx>]

> Hi, I think that is a great idea. For the tests you run, there will be
> not much difference since there is relatively few edges, but there can
> be big influence of the doubled reaction on e.g. triangulated surface
> with a lot of triangles to model the geometry details. 

In my opinion, these geometry details must be very tiny. 
In most cases, the practical effect of the doubled reaction will negligibly small.
But I run additional test with tiny mesh then the size of facets considerably less sphere's size 
and got the same result. I have updated figs on wiki:
http://images3.wikia.nocookie.net/yade/images//0/00/Rod-total-force.png
http://images2.wikia.nocookie.net/yade/images//e/e6/Rod-tiny.jpg
> > http://images4.wikia.nocookie.net/yade/images//6/68/Rod-coarse.jpeg
> > http://images1.wikia.nocookie.net/yade/images//6/69/Rod-fine.jpeg

> I would suggest
>adding some possiblit (flag?) to turn on/off reactions on each
>particular edge and vertes - this way, there could an algorithm that
>would enable only one of the coinciding edges etc. Does that make sense?

I think about it. This will be a half solution. See fig: 
            O O 
             |  /|
       ====*-------
where === is a one facet, ---- is a other facet, * is a edge, O is a particle, | is a contact.
If contact with edge will be enabled only with === facet, then this contact will be enabled 
_and_ with contact with --- facet, but in this case, contact with the edge will be mistake.

-- 
Best regards, Sergei D.