Tippe Top Animation: Real-Time Motion Simulation

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Russ Edmonds
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TL;DR
6dof tippe top simulation generates location-rotation keyframes for blender animation.


Blender tippe top animation displays motion at 1/33 real time. The location – rotation keyframes were generated by a 6dof tippe top simulation coded in Python. This simulation includes:

Full 6dof equations of motion.

Stem contact dynamics.

Modified Coulomb friction.

Coefficient of restitution applied to landing force impulse.
 
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Russ Edmonds said:
Summary:: 6dof tippe top simulation generates location-rotation keyframes for blender animation.



Blender tippe top animation displays motion at 1/33 real time. The location – rotation keyframes were generated by a 6dof tippe top simulation coded in Python. This simulation includes:

Full 6dof equations of motion.

Stem contact dynamics.

Modified Coulomb friction.

Coefficient of restitution applied to landing force impulse.

Since you have it all set up, a diagram-like version showing the relevant vectors, from different angles would be useful. Shiny reflections are nice, but for educational purposes clean, minimal graphics are better.
 
That's true, I was going for a more realistic render here for aesthetics and to make the comparison with high speed video a little easier. I'm in the process of comparing the simulation output to high speed video of actual tippe tops in action.
 
A.T. said:
minimal graphics are better.
for some purposes but this is much more useful than 'just entertaining'. That needs to be acknowledged and I bet not many people could resist waiting till the end of the sequence.
 
Loud music I do not enjoy, so I skipped to the end, to see what happens, which I knew anyways.
Blender you say, impressive video, to say the least
 
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It's a cool video, but a missed opportunity to not use the Inception theme, with the spinning top and all...
 
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Follow up Blender tippe top animation showing the top's motion in real time with Eevee motion Blur. As before the location rotation keyframes were generated with a 6dof tippe top simulation coded in Python.