Ah yes, there we go. Bond Graph. This is to a modeling simulator for Python. Here’s why the Bond Graph idea is so nice: You can represent ANY of the analogous systems at the same time in the same place using the same variables. Electrical with hydraulic? Fine. It’s power being moved or stopped or changed in some way. Acoustic and a ball sitting on top of a hill ready to roll down? No problem. All goes together.
Not sure if I could learn it but that it exists at all not only amazes me but makes me happy as this is the kind of thing I wished someone did — and they did and it’s in use. [usually with the software 20-sim]