Chaos - Can't get static mesh to break

Development World Creation
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1

I’ve tried following several tutorials on chaos. In each example, I’m unable to get a simple cube to break - or at best, a chunk or two falls off - when it’s dropped from varying heights.

Can someone tell me what I’m missing? I’m using UE 5.1.1 and all of the Chaos plugins (that I can find) are enabled.

I’m using the following steps:

  1. Create a new basic level.
  2. Add a new static mesh (cube, cylinder, etc.)
  3. Select the static mesh.
  4. Select Fracture → New → Save geometry collection (GC_01, GC_02, etc.)
  5. Select a fracture type (Uniform or cluster)
  6. Click “Fracture”.
  7. Hit the Simulate button.

No matter how high the drop, in no case does the cube / cylinder / sphere do much besides fall to the ground and a couple of pieces fall off. In every example I see, including the Epic Games walkthrough, the static mesh collapses into a pile of pieces.

Does anyone have an idea as to what I might be missing?

Thanks!

-Dan

2

Hello there,

I do have the same issue. Did you manage to fix this ?

3

Make sure to test checking Chaos Physics -> Damage -> Use Size Specific Damage Threshold on the GeometryCollectionComponent. The default threshold are pretty large and for small meshes they don’t work at all, so for me this was necessary to turn on.