Effect of Bionic Crab Shell Attitude Parameters on Lift and Drag in a Flow Field

Shihao Hu; Xi Chen; Jiawei Li; Peiye Yu; Mingfei Xin; Biye Pan; Sicen Li; Qinyun Tang; Liquan Wang; Mingxuan Ding; Kaixin Liu; Zhaojin Liu

doi:10.3390/biomimetics9020081

Biomimetics (Jan 2024)

Effect of Bionic Crab Shell Attitude Parameters on Lift and Drag in a Flow Field

Shihao Hu,
Xi Chen,
Jiawei Li,
Peiye Yu,
Mingfei Xin,
Biye Pan,
Sicen Li,
Qinyun Tang,
Liquan Wang,
Mingxuan Ding,
Kaixin Liu,
Zhaojin Liu

Affiliations

Shihao Hu: College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
Xi Chen: Heilongjiang Institute of Technology, College of Mechanical and Electrical Engineering, Harbin 150050, China
Jiawei Li: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Peiye Yu: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Mingfei Xin: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Biye Pan: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Sicen Li: College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
Qinyun Tang: College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
Liquan Wang: College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
Mingxuan Ding: College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China
Kaixin Liu: College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Zhaojin Liu: College of Mechanical and Electrical Engineering, Harbin Engineering University, Harbin 150001, China

DOI: https://doi.org/10.3390/biomimetics9020081
Journal volume & issue: Vol. 9, no. 2
p. 81

Abstract

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Underwater bionic-legged robots encounter significant challenges in attitude, velocity, and positional control due to lift and drag in water current environments, making it difficult to balance operational efficiency with motion stability. This study delves into the hydrodynamic properties of a bionic crab robot’s shell, drawing inspiration from the sea crab’s motion postures. It further refines the robot’s underwater locomotion strategy based on these insights. Initially, the research involved collecting attitude data from crabs during underwater movement through biological observation. Subsequently, hydrodynamic simulations and experimental validations of the bionic shell were conducted, examining the impact of attitude parameters on hydrodynamic performance. The findings reveal that the transverse angle predominantly influences lift and drag. Experiments in a test pool with a crab-like robot, altering transverse angles, demonstrated that increased transverse angles enhance the robot’s underwater walking efficiency, stability, and overall performance.

Published in Biomimetics

ISSN: 2313-7673 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology
Website: https://www.mdpi.com/journal/biomimetics

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