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TaffGoch — Rotegrity Springs
#rotegrity
Published: 2011-03-22 02:51:45 +0000 UTC; Views: 2706; Favourites: 10; Downloads: 43
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Description
Geodesic sphereReciprocal-frame
"Rotegrity" or "nexorade"
• Polyhedral basis: Icosahedron
• Tessellation: Class-II
• Frequency: 2v{1,1}
• Modeled in
• Rendered in
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Comments: 6
still can't get my head around the fact you do this in sketchup... good work fella
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each of the pieces that have the 'double coils' would need a pretty accurate angle between the 3 segments, otherwise it would explode like a mousetrap halfway thru getting it assembled! ...I could just hear the Dr in the ER looking at the wounds saying "what the...?"
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I have considered sculpting this in copper pipe. (Advantage: copper is easily chrome-plated.)
There are only a few unique parts, replicated & rotated, using icosahedron rotational symmetries. Producing multiple identical parts would benefit from the use of jigs.
And, yes, I'd have to closely match "spring" angles, even though copper pipe wouldn't be that "springy." SketchUp makes the measurement of precise angles pretty easy.
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I've wondered, if one was "realized" with spring-wire, how well would it bounce? The model shares the characteristics of tensegrities, which are pretty flexible, but recover initial shape, readily.
To be truthful, I respectfully "fear" the hazards presented by my tablesaw more than I would fear a geodesic spring explosion....
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Thats a good question about bouncing. Maybe not much at all, since they are on so many axis vs all parallel? Then again, maybe it has to be really heavy (or springs really gentle) for the impact to cause so many springs to give all at once? interesting...
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Ron,
Seemed like more of a chore, at the time, rather than a trick.
The real chore would be trying to construct a physical sculpture of the design! (Although, I'd give it a go, in consideration of a large commission.) ^_^
-Taff
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