yade-dev team mailing list archive

[chiara modenese <c.modenese@xxxxxxxxx>]

On 21 June 2010 06:58, Sergei D. <sj2001@xxxxxxxxx> wrote:

> .
> > Q: I need a sort of equivalent mass to do it, which is something like
> > (as in PFC):
> > m=m1*m2/(m1+m2)
> > the only thing is that if the contact is between a ball and a box (say
> > in the triaxial) then this would not work. Is it possible in the contact
> > law to discern between bodies shape? Maybe simply pointing to
> shape.get()?
>
> Why it will not work?
> m=m1*m2/(m1+m2) is 1/m=1/m1+1/m2,
> so if box have infinity mass (m2) it will 1/m=1/m1, for example. No?
>
Hi Sergei, it will not work simply because in the TT boxes have zero mass.
So in that case it would be necessary to set the equivalent mass equal just
to the one of the contact sphere (I think).

>
> --
> Best regards,
> Sergei D.
>
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