yade-dev team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

On 14/01/11 17:00, Václav Šmilauer wrote:
>
>> You are computing bending, while Plassiard tried to isolate
>> "rolling". The difference is not big, and I can't personaly states
>> that one or the other is better. They should give very similar
>> results, I'm sure.
> I am not familiar with this terminology, what should be the difference
> between rolling and bending? Sorry. v.

I call "bending" the orthonormal part of relative rotations. For
rolling, see Plassiard (and many other DEM papers on rolling friction),
it's defining the "rolled" distance, and then it converts it to an angle
(dividing by mean radius, which is for me the weird part).

Bruno