Ooops. I posted this on the Apprentice forum, but this is a full-fledged hip file.

I am really new to Houdini and I just tried to create a simple example based
off the shattered glass example file. I have a triangulated grid that is partitioned
and I just want it to fall apart when it hits the ground plane.

I am using a RBD Glue Object and I have glue strength set to .05 as in
the example file, but nothing happens except a regular rigid body reaction to
the entire plane.

I'm kind of unclear also on how you are supposed to use groups and when
they are automatically created etc. Also, what is supposed to be the input
to the dopimport node when you are using groups? A merge?

In the rbd glue objcts collision tab then the volume subtab, turn off “use volume based collisions”. A 2d plane has no volume. Be aware though using non-volume based collsions can get very slow to calculate.

The issue was that my density settings were too low and my glue strength also
needed to be lowered considerably.

check this