Rolling friction

[fractile]

This may be a stupid question, but how should I apply rolling friction to a body?

Imagine a ball (body with sphere collision) rolling on a horizontal plane. The ball is supposed to be made of soft and sticky material, so I would like to have it slow down quite fast. I have been playing with material's static and kinetic friction, but those didn't help as the body is rolling, not sliding.

Do I have "manually" dampen angular velocity, when I detect that ball is touching the floor?

[Julio Jerez]

damping will no do it, rolling friction in a dry force, (the same type a the friction force generate when a contact is resting),
changing the static and dynamics coeficient of friction of the material will not do because when an ideal rigid ball in rolling on an ideal surface with a constant velocity or even accelrated but not sliding,
the contact point is not sliding nor accelerating, therefore the is not tangent reaction force that can generate friction.
in is wird but a rolling ball the contact point is actually static and is not fubejct to acceleration. This is because each tiem teh ball do and infinitesimal
rotation another point takes the place of the contact an that point is also static at that instance of time.
rolling friction is generated because as teh ball rolls, it is suggeted to intenal defeormation bacause of it won waight around teh contact point, it is a dry friction similar to kynetic friction.
damping will not work because damping is a viscous force, meaning it ibncrease with the velocity.

if you are have doing a contrive setting as you say (a ball ove a flat suface), you can use this joint CustomDryRollingFriction to simulate rolling dry friction
if works very well for things like pool, balling or any case when a spher roll on a flat surface, a more complex case in not as eassy, since it becumes a Complementaty
problem to determine which contacts are generation friction an which are not.