A new type of two-dimensional acoustic black hole-based vibration absorber

Ning Wang, Hongli Ji, Chao Zhang, Yang Lu, Jinhao Qiu, Li Cheng

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The traditional Acoustic Black Hole (ABH) structure controls the wave propagation by designing and optimizing the shape of the structure itself, and has the advantages of simple implementation and high control efficiency, which has been exploited for vibration control and noise suppression. However, the tailoring of the structure will lead to a decrease in the rigidity of the structure, which limits the application prospect of the conventional ABH structure in practical engineering. In this paper, an add-on two-dimensional circular ABH based dynamic vibration absorber (2D ABH-DVA) is proposed for structural vibration control by referring to the design of Dynamic Vibration Absorber (DVA) and giving full play to the advantages of ABH. The coupling dynamic model of the primary structure with the add-on ABH structure is established, and the coupling conditions which are beneficial to the vibration control are analysed. A numerical investigation was carried out on the mechanism of the vibration control and to further validate the coupling between the primary structure and the add-on ABH structure. The simulation results show that add-on ABH structure can achieve good coupling with the primary structure without special design, and achieve good broadband vibration control effect.

Original languageEnglish
Title of host publicationProceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020
EditorsJin Yong Jeon
PublisherKorean Society of Noise and Vibration Engineering
ISBN (Electronic)9788994021362
Publication statusPublished - 23 Aug 2020
Event49th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2020 - Seoul, Korea, Republic of
Duration: 23 Aug 202026 Aug 2020

Publication series

NameProceedings of 2020 International Congress on Noise Control Engineering, INTER-NOISE 2020

Conference

Conference49th International Congress and Exposition on Noise Control Engineering, INTER-NOISE 2020
CountryKorea, Republic of
CitySeoul
Period23/08/2026/08/20

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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