基于声学黑洞的盒式结构全频带振动控制

Translated title of the contribution: Full-band vibration control of box-type structure with acoustic black hole

Pu He, Xiaodong Wang, Hongli Ji, Jinhao Qiu, Li Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

2 Citations (Scopus)

Abstract

As a new type of efficient wave control technology, the Acoustic Black Hole (ABH) technology is widely used in vibration control of beam and plate structures. However, the traditional acoustic black hole structures have many shortcomings, such as weak local strength and stiffness, large feature size, and high effective frequency, limiting the further application and promotion of acoustical black hole technology. A new type of Acoustic Black Hole Damping (ABHD) absorber is designed for the vibration control of box-type structure. In this paper, the finite element simulation method is used to study the dynamic characteristics of the box-type structure with ABHD absorber. The results show that it has high energy concentration and dissipation ability. By optimizing the design of ABHD absorber at different positions in the middle of upper and lower main beams, the vibration reduction effect of the full-band can be achieved without changing the strength and stiffness of the main structure. The experimental results show that full-band resonance peaks of the box-type structure with ABHD absorbers can be reduced by 5-30 dB, and the weight of ABHD absorbers accounts for 7.87% of the total weight of system.

Translated title of the contributionFull-band vibration control of box-type structure with acoustic black hole
Original languageChinese
Article number223350
JournalHangkong Xuebao/Acta Aeronautica et Astronautica Sinica
Volume41
Issue number4
DOIs
Publication statusPublished - 25 Apr 2020

Keywords

  • ABH
  • Box-type beam structure
  • Dynamic vibration absorber
  • Full-band
  • Vibration control

ASJC Scopus subject areas

  • Modelling and Simulation
  • Aerospace Engineering
  • Space and Planetary Science
  • Applied Mathematics

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