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How do I change the bounciness of my mesh?

Hello, i'm trying to make a ball with physics that bounce like a tennis ball, but whatever values i set, it only bounces once or twice as if it's super heavy.

I would expect the ball to not stop bouncing when i set the Mass Scale, Angular Damping and Linear Damping on 0.

What's going on?

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asked May 14 '14 at 08:05 PM in Using UE4

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Rens2Sea
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Hey Rens2Sea,

Take a look at the Material assigned to your ball's Mesh. In the Details panel, you can set a Physical Material for that Material. To create your own custom Phys Material to use here, right click in your Content Browser (or click New) and choose Physics > Physical Material.

Open up the Phys Material, and you'll see settings for Friction, Restitution, and Density. If you set your Restitution higher, you'll get more bounce from Actors with this Phys Material assigned. Try 1.75 to start with and adjust from there based on your mesh's settings.

Hope that helps! Let me know if you run into more questions with this.

Ben Halliday

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answered May 14 '14 at 09:06 PM

avatar image Rens2Sea May 14 '14 at 10:45 PM

Thanks, didn't know that was possible. I created a physical material as you said and added it to the sphere component but that didn't do much. So i added it to the staticmesh, but that didn't do anything either. Figured it was because the sphere component has the physics on it, so i got rid of that and enabled physics on the staticmesh but now the ball falls through the ground.

Edit: Fixed it, the staticmesh didn't have a collision mesh, does now, bounces all over the place! great! But now the ball never stops rolling.

avatar image Ben Halliday STAFF May 14 '14 at 11:44 PM

Glad you got it working!

For the continuous rolling problem, check this post here:

https://answers.unrealengine.com/questions/36349/physics-ball-keep-rolling-at-slow-speed-how-to-sto.html

Ben Halliday

avatar image Halocomander1 Nov 18 '15 at 06:29 PM

Increase the angular dampening to stop the rolling

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