Hemihelix
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A hemihelix is a curved geometric shape consisting of a series of helices with alternating chirality, connected by a perversion at the reversals.[1][2]
The formation of hemihelices with periodic distributions of perversions in slender structures is understood in terms of competing buckling instabilities generated by in-plane stresses.[3]
References
- ↑ Amina Khan (April 24, 2014). "With a little rubber, scientists make weird, twisted hemihelix". Los Angeles Times. http://www.latimes.com/science/sciencenow/la-sci-sn-hemihelix-helix-new-shape-rubber-band-cucumber-20140424,0,630253.story.
- ↑ Lydia Smith (April 24, 2014). "Scientists Discover New Rare 'Hemihelix' Shape Using Rubber Bands". International Business Times. http://www.ibtimes.co.uk/scientists-discover-new-rare-hemihelix-shape-using-rubber-bands-1445806.
- ↑ Liu, J.; Huang, J.; Su, T.; Bertoldi, K.; Clarke, D. R. (2014). "Structural Transition from Helices to Hemihelices". PLOS ONE 9 (4): e93183. doi:10.1371/journal.pone.0093183. PMID 24759785. Bibcode: 2014PLoSO...993183L.
| Curves |  | ||
|---|---|---|---|
| Helices |
| ||
| Spirals | |||
 |  |
