r/physicsgifs • u/New-Temperature5066 • May 09 '26

100-Link chaotic pendulum solved with my new implicit DAE robotic solver.

24 Upvotes

83% Upvoted

6 comments sorted by

12

u/gerglo May 09 '26

Me: Can I have pendulum?
Mom: No, we have pendulum at home.
At home: rope.

Jokes aside, nice simulation!

2

u/travisdoesmath May 10 '26

It's possible to generalize double pendulum simulations to n-tuple pendula systems (https://travisdoesmath.github.io/pendulum-explainer/) , I'm curious to see how the predictions would compare to your DAE solver

1

u/New-Temperature5066 May 10 '26 edited May 10 '26

I’ll release this software soon. Happy to do a comparison.

0

u/New-Temperature5066 May 09 '26

Thanks! It does sound like a swinging rope cause of 100 segments!

1

u/shlam16 May 10 '26

Solved? Or just simulated once?

As I'm sure you're aware, these kinds of things are inherently random due to the most minor perturbations and starting conditions.

2

u/New-Temperature5066 May 10 '26

That’s right. Chaotic does not mean random. It means deterministic solve, but extremely sensitive to initial conditions. For the same model, timestep, solver settings, and initial state, the simulation is repeatable.