If one body is not dynamic, is there a reason to define an "equivalent"
mass? I would say it this case m=m1, which is what Sergei find for
infinite mass too.
Bruno
chiara modenese a écrit :
On 21 June 2010 06:58, Sergei D. <[email protected]
<mailto:[email protected]>> 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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