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journal article·2020-12-01Open access

Underwater broadband sound insulation with chiral spiral structures

Huilan Wu, Chengpeng Hao, Han Zhang

AIP Advances· Volume 10· Issue 12
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Source abstract

Abstract

Low-frequency noise has been a long-standing issue in the context of a complex underwater environment. While theory related to low-frequency sound insulation in air has been developed, systematic research on underwater sound insulation has not yet been established. In our work, we used a chiral variable pitch spiral structure to study underwater low-frequency sound insulation and calculated the sound insulation effect using different parameters. Our results show that the fixed-pitch spiral structure has a better effect on underwater sound insulation and can achieve 3505 Hz–5355 Hz wide-band sound insulation. This spiral structure breaks through the limitation of appearance and can achieve sound insulation at the frequency of interest without changing the outer profile of the structure. Accordingly, it has potential in underwater low-frequency sound insulation applications.
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Research context

OpenAlex topics: Acoustic Wave Phenomena Research · Underwater Acoustics Research · Electromagnetic Scattering and Analysis

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Underwater Vehicles, Institute of Acoustics, Chinese Academy of Sciences 1 , 21 Beisihuan West Road, Haidian District, Beijing 100190, China

University of Chinese Academy of Sciences 2 , 19 Yuquan Road, Shijingshan District, Beijing 100049, China

Key Laboratory of Noise and Vibration, Institute of Acoustics, Chinese Academy of Sciences 3 , 21 Beisihuan West Road, Haidian District, Beijing 100190, China

State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences 4 , 21 Beisihuan West Road, Haidian District, Beijing 100190, China

Funding

National Natural Science Foundation of China

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