Fish fins on Shreyas Mandre https://www.shreyasmandre.com/tags/fish-fins/ Recent content in Fish fins on Shreyas Mandre Hugo -- gohugo.io en-us Fri, 24 Dec 2021 02:23:21 +0000 Feet and fins https://www.shreyasmandre.com/research/feetandfins/ Fri, 24 Dec 2021 02:23:21 +0000 https://www.shreyasmandre.com/research/feetandfins/ <p>Why do our feet look the way they do? Believe it or not, some of us do ask ourselves this question.</p> Curvature-induced stiffening of fish fin https://www.shreyasmandre.com/publications/nguyen2017/ Wed, 31 May 2017 00:00:00 +0000 https://www.shreyasmandre.com/publications/nguyen2017/ How fish modulate their fin stiffness during locomotive manoeuvres remains unknown. We show that changing the fin&rsquo;s curvature modulates its stiffness. Modelling the fin as bendable bony rays held together by a membrane, we deduce that fin curvature is manifested as a misalignment of the principal bending axes between neighbouring rays. An external force causes neighbouring rays to bend and splay apart, and thus stretches the membrane. This coupling between bending the rays and stretching the membrane underlies the increase in stiffness.