Particles sink half way into collision object?

Support Particles and Physics Simulations
1

Exploding objects with particles above a plane I wish to act as solid ground. I have it as a collision object with zero permeability but the shrapnel sinks half way into the plane like quicksand.

What am I doing wrong? Sorry, file to big to upload.

Thanks!

2

The collision object stops the particles, it does not know that the broken object part is a 3d object, it’s just drawing the broken part in the location of the particle.

For real interactions you need to use rigid bodies