Mechanics problems in application of acoustic black hole structures

Hongli Ji, Wei Huang, Jinhao Qiu, Li Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

All right reserved. Acoustic black hole (ABH) effect utilizes the gradient variance of the structural configuration or material properties to diminish wave velocity in the structure. The wave velocity decreases to zero in an ideal scenario, resulting in zero reflection. The mainstream method to realize ABH effect is to tailor the structure thickness properly, such that energy is captured in a certain area. Great advantages and potential in applications for flexural wave manipulation in thin-walled structure result from its high efficiency, broadband characteristics and flexible implementation. We introduce basic principles of ABH effect, recent progress of related mechanical problems, and problems to be further explored. We describe the modeling and analysis method of ABH structure, the method and progress of experimental studies, manipulation and propagation of waves in ABH structures, and related issues in engineering applications of ABH structures.
Original languageEnglish
Pages (from-to)333-384
Number of pages52
JournalAdvances in Mechanics
Volume47
Issue number1
DOIs
Publication statusPublished - 24 Feb 2017

Keywords

  • Acoustic black hole
  • Applications of ABH
  • Mechanical model
  • Methods of analysis and experiment
  • Wave propagation and manipulation

ASJC Scopus subject areas

  • Mathematical Physics
  • Mechanical Engineering

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