This has been a "thing" on reddit for a couple of weeks now and with lots of people being bored right now the results were quite diverse and interesting:
Re:Build “magic,” gravity-defying structures–with Legos, kit...
by magicalhippo on Saturday April 25, 2020 @07:13PM
(#22982501)
From Wikipedia there was a link to the SUPERball robot[1], pretty cool. But I wonder about the longevity of it, I assume they could use multiple wires per "strand" in case one breaks, but dust and sand seem like they could be big issues over time.
Re:Build “magic,” gravity-defying structures–with Legos, kit...
by whiddershins on Saturday April 25, 2020 @05:14PM
(#22981556)
There’s a great book I can’t recall the name of that puts forth the notion that we commonly make the mistake of modeling the human body as a compressive structure, when it is just as much or more a tensegretic structure.
We aren’t piled bone on bone like a concrete block house.
Re:Build “magic,” gravity-defying structures–with Legos, kit...
by benrbray on Saturday April 25, 2020 @06:03PM
(#22981970)
Here's a (work-in-progress?) monograph about the mathematics of tensegrities! Neat application of representation theory outside the standard examples from chemistry!
Re:Build “magic,” gravity-defying structures–with Legos, kit...
by xwdv on Saturday April 25, 2020 @06:17PM
(#22982072)
Would you enter a building held up by tensegrity? I feel that to build the next generation of super massive structures in the 21st century we will have to use tensegrity concepts.
This has been a "thing" on reddit for a couple of weeks now and with lots of people being bored right now the results were quite diverse and interesting:
https://www.reddit.com/r/lego/comments/g2230l/lego_tensegrit...
https://www.reddit.com/r/EngineeringPorn/comments/g05lld/i_b...
https://www.reddit.com/r/pics/comments/g44sz8/my_first_attem...
https://www.reddit.com/r/3Dprinting/comments/fcnum5/finally_...
https://www.reddit.com/r/3Dprinting/comments/fh5cvo/thought_...
etc.
Still, pretty cool!
[1]: https://www.youtube.com/watch?v=hkzeE6BVNIk
https://www.youtube.com/watch?v=s7pI0cHJQtY
We aren’t piled bone on bone like a concrete block house.
Fascinating idea.
Back when i was a cell biologist, i was very excited to read an argument that cells had tensegral structure:
https://jcs.biologists.org/content/116/7/1157
Connelly & Guest 2015, "Frameworks, Tensegrities, and Symmetry: Understanding Stable Structures"
http://pi.math.cornell.edu/~web7510/framework.pdf
https://en.wikipedia.org/wiki/Hyatt_Regency_walkway_collapse
http://www.slate.com/blogs/the_eye/2014/04/17/the_citicorp_t...
Both were essentially caused by people making assumptions. You would think such things would be thought through, but sometimes they're not.
https://www.concretenetwork.com/post-tension/basics.html