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- Title
基于超材料结构的悬臂梁水听器设计.
- Authors
常文娟; 赵永成; 廖力鸣; 闫 晟; 郝程鹏
- Abstract
The cantilever beam hydrophone can receive low frequency underwater acoustic signals in resonant frequency band, which can not only improve the sensitivity but also obtain superior detection performance compared with the traditional hydrophones, and has a broad application prospect in the field of marine engineering. This article designs a novel cantilever beam hydrophone based on acoustic metamaterials. First, the negative equivalent principle of the metamaterials and the effects of material parameters on resonant frequency are studied, and the method of reducing the resonant frequency of the cantilever beam hydro phone is obtained. On this basis, the first-order natural frequencies of single copper beam, three-layer copper-rubber beam and five-layer copper-rubber beam are analyzed, and the three--layer composite structure is selected to complete the design of the metamaterial cantilever beam hydrophone according to the practical requirements. The simulation analysis results show that the hydrophone designed in this paper has a lower resonant frequency than the conventional cantilever beam hydrophone with the same dimensions.
- Subjects
MARINE engineering; HYDROPHONE; MARINE engineers; COMPOSITE structures; CANTILEVERS; METAMATERIALS; ARCHITECTURAL acoustics; COMPOSITE construction
- Publication
Piezoelectrics & Acoustooptics, 2022, Vol 44, Issue 3, p339
- ISSN
1004-2474
- Publication type
Article
- DOI
10.11977/j.issn.1004-2474.2022.03.001