I made fractures in an object, I thought it would shatter by the liquid in side the object (the liquid is moving wildly) but it didn't. I tried to make a projectile that would collide with the object to shatter it, but it goes through the object (I checked both objects whether they have collision properties).

How do I let an object (which already has fractures) actually shatter apart by collision?

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    $\begingroup$ The collision system and the fluid sim system are using different math and are separate isolated systems as far as I know. Maybe someone else can elaborate more. It's physics, but it's still faked physics, in order to be manageable by your computer's processor. I think you'll need to explode that fractured object first, bake that, then splash the liquid against it. $\endgroup$ – Mentalist Jul 8 '15 at 14:16

There are a couple ways to get the desired result.

Using the Explode modifier.
Using the Cell Fracture add-on.

Both options have a number of settings that can be defined & tweaked.

Sorry I misread a little bit. Depending on how your fractures were made Part 2 of the Cell Fracture tutorial should help. Otherwise you may need to explode your mesh.

  • $\begingroup$ thanks! that tutorial helped me. Ironically he's making exact the same thing I'm trying to do. $\endgroup$ – BadAtPHP Jul 10 '15 at 14:19
  • $\begingroup$ Glad to be of assistance. Happy blending! $\endgroup$ – Terus Jul 25 '15 at 17:08

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