[durag]

I finished university 4 years ago but just now I am going down the rabbit hole of bond graph modeling and studying directly from the MIT class notes of Henry M. Paynter [1] while simultaneously using Simscape at work for modeling vehicle systems. I understand that bond graphs are the underlying mechanism upon which Modelica and Simscape are built upon(?).

Can any expert in this field give me some pointers. My current belief is that understanding the theory of bond graphs will give me intuitive understanding of just about every system I work with in my field.

I find that this field is surprisingly niche, as most of my peers have never paid special attention to it, but when I found about it, it seemed to me like a magic bullet for all my problems.

[1] https://dirac.ruc.dk/~heine/paynter/analysis_and_design_of_e...

[michaeltiller]

I actually would disagree that Bond Graphs are the "underlying mechanism" in Modelica. The Modelica community and the Bond Graph community are a bit at odds in fact. My side of this story can be found at [1] and [2]. I disagree with the idea that Bond Graphs will give you an intuitive understanding of just about every system. What it will give you is an appreciation for the elegance of the Bond Graph formulation. But the analogies drawn there are, in my experience of 30 years of modeling in industry, extremely superficial. The analogies all break down once you get past passive, linear elements (e.g., why isn't there momentum in thermal systems, what if I have an compressible fluid, what is the analogy of a clutch in an electrical system, etc). Bond Graphs also aren't really acausal either, they are just a different causal formulation that is closer to the physics.

I'm sure Bond Graph fans will disagree. I am just sharing my personal, subjective opinion here.

[1]: https://www.linkedin.com/feed/update/urn:li:ugcPost:72725163... [2]: https://mbe.modelica.university/components/connectors/simple...

[hazrmard]

I studied bond graphs in modeling & simulation courses in college. I thought they were so cool! The utility knife of understanding mechanical phenomena.

Until I discovered Hamiltonian physics :)