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Stin V, Godoy-Diana R, Bonnet X, Herrel A. Form and function of anguilliform swimming. Biol Rev Camb Philos Soc 2024. [PMID: 39004428 DOI: 10.1111/brv.13116] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 07/16/2024]
Abstract
Anguilliform swimmers are long and narrow animals that propel themselves by undulating their bodies. Observations in nature and recent investigations suggest that anguilliform swimming is highly efficient. However, understanding the underlying reasons for the efficiency of this type of locomotion requires interdisciplinary studies spanning from biology to hydrodynamics. Regrettably, these different fields are rarely discussed together, which hinders our ability to understand the repeated evolution of this swimming mode in vertebrates. This review compiles the current knowledge of the anatomical features that drive anguilliform swimming, compares the resulting kinematics across a wide range of anguilliform swimmers, and describes the resulting hydrodynamic interactions using data from both in vivo experiments and computational studies.
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Affiliation(s)
- Vincent Stin
- UMR 7636, PMMH, CNRS, ESPCI Paris-PSL, Sorbonne Université, Université Paris Cité, 7 Quai Saint-Bernard, Paris, 75005, France
- Département Adaptation du Vivant, UMR 7179 MECADEV, MNHN/CNRS, 43 rue Buffon, Paris, 75005, France
| | - Ramiro Godoy-Diana
- UMR 7636, PMMH, CNRS, ESPCI Paris-PSL, Sorbonne Université, Université Paris Cité, 7 Quai Saint-Bernard, Paris, 75005, France
| | - Xavier Bonnet
- UMR 7372 Centre d'Etude Biologique de Chizé, CNRS, 405 Route de Prissé la Charrière, Villiers-en-Bois, 79360, France
| | - Anthony Herrel
- Département Adaptation du Vivant, UMR 7179 MECADEV, MNHN/CNRS, 43 rue Buffon, Paris, 75005, France
- Department of Biology, Evolutionary Morphology of Vertebrates, Ghent University, K.L. Ledeganckstraat 35, Ghent, 9000, Belgium
- Department of Biology, University of Antwerp, Universiteitsplein 1, Wilrijk, 2610, Belgium
- Naturhistorisches Museum Bern, Bernastrasse 15, Bern, 3005, Switzerland
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Chen B, Zhang J, Meng Q, Dong H, Jiang H. Complex Modal Characteristic Analysis of a Tensegrity Robotic Fish's Body Waves. Biomimetics (Basel) 2023; 9:6. [PMID: 38248580 PMCID: PMC11154480 DOI: 10.3390/biomimetics9010006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 12/14/2023] [Accepted: 12/14/2023] [Indexed: 01/23/2024] Open
Abstract
A bionic robotic fish based on compliant structure can excite the natural modes of vibration, thereby mimicking the body waves of real fish to generate thrust and realize undulate propulsion. The fish body wave is a result of the fish body's mechanical characteristics interacting with the surrounding fluid. Thoroughly analyzing the complex modal characteristics in such robotic fish contributes to a better understanding of the locomotion behavior, consequently enhancing the swimming performance. Therefore, the complex orthogonal decomposition (COD) method is used in this article. The traveling index is used to quantitatively describe the difference between the real and imaginary modes of the fish body wave. It is defined as the reciprocal of the condition number between the real and imaginary components. After introducing the BCF (body and/or caudal fin) the fish's body wave curves and the COD method, the structural design and parameter configuration of the tensegrity robotic fish are introduced. The complex modal characteristics of the tensegrity robotic fish and real fish are analyzed. The results show that their traveling indexes are close, with two similar complex mode shapes. Subsequently, the relationship between the traveling index and swimming performance is expressed using indicators reflecting linear correlation (correlation coefficient (Rc) and p value). Based on this correlation, a preliminary optimization strategy for the traveling index is proposed, with the potential to improve the swimming performance of the robotic fish.
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Affiliation(s)
- Bingxing Chen
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China; (B.C.); (J.Z.); (Q.M.)
| | - Jie Zhang
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China; (B.C.); (J.Z.); (Q.M.)
| | - Qiuxu Meng
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China; (B.C.); (J.Z.); (Q.M.)
| | - Hui Dong
- School of Mechanical Engineering and Automation, Fuzhou University, Fuzhou 350108, China; (B.C.); (J.Z.); (Q.M.)
| | - Hongzhou Jiang
- School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
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