Thanks for the suggestion.
A few years ago, I did some work along these lines to amputate animated models. Based on my experience, I think the Minie portion would be quite easy. The hard part would be splitting the JMonkeyEngine meshes into fracture groups. Once you have those, you can easily generate new physics objects.
I’ve been working towards splitting meshes. Already, the “Maud” application has a method to split meshes based on connectivity. I imagine that gets me about 1/4 of the way to splitting based on fracture groups.
So it’s a long-term project, but definitely worth keeping in mind.