Hey all! Apologies if this is in the incorrect section of the forum!

Forewarning, I am a huge newbie to Houdini and am still learning Houdini..

So, I've managed to create a working car crash simulation where the object impacts a static object. However for the scene I am working on, the vehicle needs to crash through the wall (testing it as a wall, it will change to a building once I've worked out what I'm doing).

So as a basic setup, I've created a fractured wall and have imported it into the DOP network as packed geometry. I seem to have figured out how to have both the wall and the vehicle to simulate together, however within a frame or 2 of impact the wall and the vehicle explode. Does anyone have any idea why this would be happening? Have I setup the network incorrectly?

Any information is hugely appreciated, I'm currently hitting my head against a wall trying to get this whole thing working

You have 2 ridigbodysolvers in your setup. That won't work as you expect it to. You really want to merge the 2 rbd packed objects and feed them into a single rigidbodysolver. Add your wall constraints to the car constraints too.

Make sure you don't have any name overlaps between the wall and the car pieces.

Thank you! Cleaning up the DOP Network like you mentioned, and also scaling down the assets in the simulation done the trick!