I'm pretty stuck on an RBD simulation I'm working on. Here's a brief description of the problem:
The shot has a building that's supposed to explode. I've set up clusters using constraints (strong glue constraints inside clusters, weaker glue constrains between clusters), and everything works fine until I try to break them selectively using a SOP Solver. The basic idea is, at the moment of the explosion, to break the weak constraints running between the clusters while keeping the stronger intracluster constraints intact. I have in fact been able to do this, but the problem is that the pieces don't budge after the constraints have been broken. Only if I break all of the constraints in the area of the explosion (weak and strong), do the pieces actually fly off and explode, but then obviously they do so not as clusters but just as individual pieces. For some reason, maintaining the intracluster constraints intact prevents the pieces from moving at all.
I tried increasing the force of the explosion and also reducing the density of the pieces, but this hasn't helped.
I'm attaching the file, I tried organizing and labeling everything as clearly as possible.
If anyone has any idea or suggestion what I might be doing wrong, I'd really appreciate your help.
Thanks a lot!