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论文类型： 期刊论文

发表时间： 2022-06-30

发表刊物： Chuan Bo Li Xue/Journal of Ship Mechanics

所属单位： 运载工程与力学学部

卷号： 25

期号： 4

页面范围： 509-516

ISSN号： 1007-7294

摘要： To suppress the propagation of vibration and noise in the ship equipment and structure, a phononic crystal plate structure was designed with additional cylindrical vibrators. Based on the Bloch theorem of periodic structure, the band gap of the phononic crystal plate was obtained with finite element method, the ef- fects of vibration isolation and sound insulation were described by vibration transmission rate and sound insulation loss. Moreover, the effects of the geometric parameters and arrangement of the scatterers on the vibration isolation and sound insulation effects were analyzed. It is shown that the phononic crystal plate has a good vibration isolation and sound insulation effect in a specific frequency range. By rationally designing the scatterer geometric parameters and arrangement form, the low-frequency broadband vibration isolation and broadband sound insulation of the structure can be realized, which supplies more application opportunities in the vibration and noise reduction. © 2021, Editorial Board of Journal of Ship Mechanics. All right reserved.

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