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Article

Modeling Bioinspired Fish Scale Designs via a Geometric and Numerical Approach

Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA
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Author to whom correspondence should be addressed.
Academic Editor: Parvez Alam
Materials 2021, 14(18), 5378; https://doi.org/10.3390/ma14185378
Received: 19 August 2021 / Revised: 12 September 2021 / Accepted: 13 September 2021 / Published: 17 September 2021
(This article belongs to the Special Issue Biomimetic Composites and Design)
Fish scales serve as a natural dermal armor with remarkable flexibility and puncture resistance. Through studying fish scales, researchers can replicate these properties and tune them by adjusting their design parameters to create biomimetic scales. Overlapping scales, as seen in elasmoid scales, can lead to complex interactions between each scale. These interactions are able to maintain the stiffness of the fish’s structure with improved flexibility. Hence, it is important to understand these interactions in order to design biomimetic fish scales. Modeling the flexibility of fish scales, when subject to shear loading across a substrate, requires accounting for nonlinear relations. Current studies focus on characterizing these kinematic linear and nonlinear regions but fall short in modeling the kinematic phase shift. Here, we propose an approach that will predict when the linear-to-nonlinear transition will occur, allowing for more control of the overall behavior of the fish scale structure. Using a geometric analysis of the interacting scales, we can model the flexibility at the transition point where the scales start to engage in a nonlinear manner. The validity of these geometric predictions is investigated through finite element analysis. This investigation will allow for efficient optimization of scale-like designs and can be applied to various applications. View Full-Text
Keywords: bioinspired designs; dermal armor; fish scales; flexible composites; finite element analysis bioinspired designs; dermal armor; fish scales; flexible composites; finite element analysis
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MDPI and ACS Style

Chen, A.; Thind, K.; Demir, K.G.; Gu, G.X. Modeling Bioinspired Fish Scale Designs via a Geometric and Numerical Approach. Materials 2021, 14, 5378. https://doi.org/10.3390/ma14185378

AMA Style

Chen A, Thind K, Demir KG, Gu GX. Modeling Bioinspired Fish Scale Designs via a Geometric and Numerical Approach. Materials. 2021; 14(18):5378. https://doi.org/10.3390/ma14185378

Chicago/Turabian Style

Chen, Ailin, Komal Thind, Kahraman G. Demir, and Grace X. Gu 2021. "Modeling Bioinspired Fish Scale Designs via a Geometric and Numerical Approach" Materials 14, no. 18: 5378. https://doi.org/10.3390/ma14185378

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