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Question by Niko278 · Mar 22, 2015 at 03:11 PM · unity 5physicsrigidbodyfrictionsliding

Unity 5 - Sliding Rigidbodies with maximum friction

Hi. I have a problem with Unity 5 with physics. In Unity 4.5 the problem didn't exist. When I place Rigidbodies on one another they slide down even when they have maximum friction. Sometimes when I put an object at an angle of ~30 degrees it behaves like it is supposed to and stay on its position. But sometimes even when the object is in the level, at angle of ~0.1 degrees it slides down. How can I solve this issue? Thanks in advance :)

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avatar image plavelle · Apr 13, 2015 at 09:59 PM 0
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I am also experiencing this.

In unity 4.x, stacks of crates would remain still when left undisturbed. Now in 5, occasionally the stacks will begin to slide for unknown reasons.

The stacks are flat, the objects are placed directly on top of each other (they are aligned and not offset). The stacks are resting on a dynamically generated box collider (which has been tested with and without a rigidbody). The sliding does not necessarily occur to the same stacks on each playthrough.

I have tried combinations of increased static and dynamic friction, drag (in case it thought it was falling?), mass increase, project gravity setting increases, and increasing the sleep threshold. Also, assigning or not assigning a physics material, and changing the friction combine type. None of these changes prevent the sliding from occurring.

Any ideas?

avatar image kekeoki · Jun 04, 2015 at 06:04 AM 0
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Same issue

avatar image Serhii-Horun · Jun 27, 2015 at 12:21 AM 0
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+1, same issue

avatar image LoadStar · Jun 27, 2015 at 01:06 PM 0
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$$anonymous$$ake a bug report.

avatar image bdebon · Nov 16, 2015 at 11:31 AM 0
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Same issue here... Is there a bugfix in development ?

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Answer by kekeoki · Jun 27, 2015 at 10:51 AM

I made my own physics system and that was the only way I could fix it.

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Answer by kubus66 · Sep 07, 2015 at 01:17 PM

@Niko278 @plavelle @kekeoki @Serhii Horun

Had the same issue, it drove me crazy, but I found solution

Edit > Project Settings > Physics

Solver Iteration Count: at least 10 (I use 15)

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