Numerical analysis of a unique mode of locomotion: vertical climbing by Pacific lamprey
Numerical analysis of a unique mode of locomotion: vertical climbing by Pacific lamprey
Pacific lampreys are capable of climbing vertical wetted surfaces through a two-phase (bending and stretching) locomotion mode using the oral disc for adherence. We investigate the physical mechanism and performance of this process by using a continuous beam model. Two mechanisms, one akin to the jumping process and the other related to the fast stretching of the body, have been identified. This locomotion mode may inspire biomimetic designs of anguilliform swimming devices capable of overcoming steep obstacles. By using a genetic algorithm simulation we identify the combination of kinematic parameters corresponding to optimal efficiency (defined as the gravitational potential energy gained in each climbing step divided by the energy spent to activate the motion). These parameters are similar to laboratory observations of lamprey motion, suggesting that this type of locomotion has been optimized for maximum efficiency through evolution
016005-[9pp]
Zhu, Q.
3c37b4c6-f043-4e2d-915b-ffc2f33fcd04
Moser, M.
ffa57e42-df63-47f9-8f4d-b6901ea3df87
Kemp, P.S.
9e33fba6-cccf-4eb5-965b-b70e72b11cd7
March 2011
Zhu, Q.
3c37b4c6-f043-4e2d-915b-ffc2f33fcd04
Moser, M.
ffa57e42-df63-47f9-8f4d-b6901ea3df87
Kemp, P.S.
9e33fba6-cccf-4eb5-965b-b70e72b11cd7
Zhu, Q., Moser, M. and Kemp, P.S.
(2011)
Numerical analysis of a unique mode of locomotion: vertical climbing by Pacific lamprey.
Bioinspiration & Biomimetics, 6 (1), .
(doi:10.1088/1748-3182/6/1/016005).
Abstract
Pacific lampreys are capable of climbing vertical wetted surfaces through a two-phase (bending and stretching) locomotion mode using the oral disc for adherence. We investigate the physical mechanism and performance of this process by using a continuous beam model. Two mechanisms, one akin to the jumping process and the other related to the fast stretching of the body, have been identified. This locomotion mode may inspire biomimetic designs of anguilliform swimming devices capable of overcoming steep obstacles. By using a genetic algorithm simulation we identify the combination of kinematic parameters corresponding to optimal efficiency (defined as the gravitational potential energy gained in each climbing step divided by the energy spent to activate the motion). These parameters are similar to laboratory observations of lamprey motion, suggesting that this type of locomotion has been optimized for maximum efficiency through evolution
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Published date: March 2011
Organisations:
Civil Engineering & the Environment
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Local EPrints ID: 184065
URI: http://eprints.soton.ac.uk/id/eprint/184065
ISSN: 1748-3182
PURE UUID: 4688c519-40cd-4601-b777-652363bec482
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Date deposited: 04 May 2011 14:37
Last modified: 15 Mar 2024 03:21
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Author:
Q. Zhu
Author:
M. Moser
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