Configurations of ring-shaped acoustic black holes for the isolation of vibrations in plates

Deng Jie, Guasch Oriol, Zheng Ling

科研成果: 书/报告/会议事项章节会议稿件同行评审

1 引用 (Scopus)

摘要

In many common situations concerning the vibroacoustics of built-up structures, a plate gets excited at a limited region where it is connected to further structural elements, like beams or other supporting elements. To avoid the transmission of vibrations to the plate one would typically resort to elastic junctions. However, that is not always feasible and, even if it was, they may not provide enough isolation. It is proposed herein to increase the latter by resorting to ring-shaped ABH configurations consisting in, at least, one annular strip with a power-law decaying profile in the radial direction. The ring-shaped ABH strip is used to surround the external excitation area and prevent the transmission of vibrations to the rest of the plate. Designs including radial stiffeners are also presented to avoid excessive structural weakening. The numerical simulations carried out using a Rayleigh-Ritz approach with a Gaussian expansion for the flexural displacement field, show that the ring-shaped ABH constitute an efficient way to enhance vibration isolation in plates.

源语言英语
主期刊名INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering
编辑Antonio Calvo-Manzano, Ana Delgado, Antonio Perez-Lopez, Jose Salvador Santiago
出版商SOCIEDAD ESPANOLA DE ACUSTICA - Spanish Acoustical Society, SEA
ISBN(电子版)9788487985317
出版状态已出版 - 2019
已对外发布
活动48th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2019 MADRID - Madrid, 西班牙
期限: 16 6月 201919 6月 2019

出版系列

姓名INTER-NOISE 2019 MADRID - 48th International Congress and Exhibition on Noise Control Engineering

会议

会议48th International Congress and Exhibition on Noise Control Engineering, INTER-NOISE 2019 MADRID
国家/地区西班牙
Madrid
时期16/06/1919/06/19

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