im new to houdini and am going through the quickstart tut.
after I make my RBD columns breakable with “make breakable” the columns bases explode a few frames into the simulation. In the video tutorial the teachers columns stay together until they are struck with the sphere. heres a screenshot
click on your rigidbodysolver node, and ensure that “RBD” is selected as the solver engine. I just tried a simple test, and Bullet automatically fractures your base geometry without any further interaction.