Hello Houdini users,

I am new to simulations in Houdini and I am looking to have a small building destroyed with multiple materials, glass, wood, concrete etc. I tried using the merge node but it has mismatched attributes of course. Any help or direction would be much appreciated.

Mismatched attributes are not necessarily an issue, it just means that there are different attributes present on input geometries so thr missing ones need to be initialized with default value

It doesn't mean that the attribute values of the same attribute need to match among geo

However make sure that all your rbd streams have different name prefix or something as you need to avoid pieces with duplicate names within the final merged geo

You may also want to append RBD Configure after every fracture node to configure your different material properties

And to keep stuff cleaner also append RBD pack then merge those and then RBD unpack before solver

Thanks tamte, i will try and implement that today. I am unsure of best practices and am interested in learning more.

that worked perfectly! Much cleaner too. All my objects fall to the ground upon simulation. Is there a way to have them non active until something hits them? Also curious if its possible to glue everything together somehow?