[ODE] Rolling friction?

[Erick Tryzelaar]

Well, yes, if you have a perfect plane with no air resistance, there would
be no "rolling friction". But say your plane is carpet. Even with no air
resistance, the ball should still come to a stop, which is what Im trying
to simulate. According to this paper:

http://www.playpool.com/apapp/

In it, it says that the term "rolling friction" is the generalization of a
rolling object's kinetic energy being turned into heat and sound.
Personally, I only understand it at a conceptual level, and cant really
do the math until i go through the physics some more, but Im lazy, hence
the hack :)

-Erick

On Thu, 18 Jul 2002, Filipe Dias wrote:

> Rolling friction?.. mm forgive me to ask this, but isn't it supost not to
> exist? I know of air resistance :-|  But if we have a perfect plane,
> always perpendicular to the gravity, beeing rolled-over by a cylinder and
> no "fluid" (like air) around, I gess the cylinder is suposed to get
> closer to infinity every second.... and at constant speed.. ;-)
>
> Fil.
>
>
> -----Original Message-----
> From: Erick Tryzelaar <erickt@andrew.cmu.edu>
> To: ode@q12.org
> Date: Thu, 18 Jul 2002 15:06:47 -0400 (EDT)
> Subject: [ODE] Rolling friction?
>
> > Hello all,
> >
> > What's the status with ODE and rolling friction? I know that it
> > currently
> > does not support it (as exhibited by a ball that rolls off to infinity
> > :)), but is it ever going to be added in?
> >
> > I've added a hack that just adds a damper force and torque any rolling
> > object, but I'd much rather it done for me, correctly :)
> >
> > Thanks,
> >
> > -Erick
>
>
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