The composite mechanism of damping and elasticity for a fish-like flexible propeller

doi:10.1016/j.oceaneng.2022.112642

	The composite mechanism of damping and elasticity for a fish-like flexible propeller
	Wang, Xiaofei1,2 ; Zhou, Chao1 ; Wang, Jian 1,2
发表期刊	OCEAN ENGINEERING
ISSN	0029-8018
	2022-12-15
卷号	266 页码:9
通讯作者	Zhou, Chao(chao.zhou@ia.ac.cn)
摘要	Fish in nature adjust their swimming modes by regulating muscle stiffness under different ocean conditions. Peduncle stiffness plays a significant role in propulsive performance. However, flexible structures designed with single-mechanism elastic components produce optimal propulsive performance only at specific frequencies. Existing structures were difficult to achieve effective propulsion over a wide range of frequencies. To this end, this article firstly proposed a flexible fish-like propeller based on the composite mechanism of damping and elasticity. Combining with the compliance characteristics of the elastic structure at a specific frequency and damping characteristics that the damping force raised rapidly with frequency, the biological propeller maintained a reasonable phase and flapping amplitude in a wide frequency range, ensuring that the passive flexible tail promoted propulsive performance over a wide frequency range. Secondly, based on the blade element theory, fluid forces exerted on the biological propeller were calculated by drag forces and added mass forces. A hydrodynamic-twisting-damping torque (HTDT) model was established to analyze the motion of the passive flexible joint. Finally, the propulsive performance was tested over a grid of torsional stiffness and dynamic damping viscosity. The results showed that torsional stiffness and dynamic damping viscosity significantly influenced the phase and flapping amplitude of the caudal fin. The experimental results further found the optimized combination with the optimal torsional stiffness and dynamic damping viscosity. This work further offers valuable insights into the development and optimization of the fish-like propeller.
关键词	Passive flexible joint Damping joint Passive propulsion
DOI	10.1016/j.oceaneng.2022.112642
关键词[WOS]	ROBOTIC FISH ; CAUDAL FIN ; LOCOMOTION ; BODY
收录类别	SCI
语种	英语
资助项目	National Nature Science Foundation of China ; [62003341] ; [61903362] ; [62033013]
项目资助者	National Nature Science Foundation of China
WOS研究方向	Engineering ; Oceanography
WOS类目	Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
WOS记录号	WOS:000913245300002
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/51405
专题	复杂系统认知与决策实验室_水下机器人
通讯作者	Zhou, Chao
作者单位	1.Chinese Acad Sci, Inst Automat, State Key Lab Management & Control Complex Syst, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Artificial Intelligence, Beijing 100049, Peoples R China
第一作者单位	中国科学院自动化研究所
通讯作者单位	中国科学院自动化研究所
推荐引用方式 GB/T 7714	Wang, Xiaofei,Zhou, Chao,Wang, Jian. The composite mechanism of damping and elasticity for a fish-like flexible propeller[J]. OCEAN ENGINEERING,2022,266:9.
APA	Wang, Xiaofei,Zhou, Chao,&Wang, Jian.(2022).The composite mechanism of damping and elasticity for a fish-like flexible propeller.OCEAN ENGINEERING,266,9.
MLA	Wang, Xiaofei,et al."The composite mechanism of damping and elasticity for a fish-like flexible propeller".OCEAN ENGINEERING 266(2022):9.