A Circular Eccentric Vibration Absorber With Circumferentially Graded Acoustic Black Hole Features

Hongli Ji, Xiaoning Zhao, Ning Wang, Wei Huang, Jinhao Qiu, Li Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)


A previously proposed planar axisymmetric dynamic vibration absorber (DVA), with embedded acoustic black hole (ABH) features, has been shown to suffer from the very selective coupling with the host structure, thus compromising its vibration reduction performance. To tackle the problem, an eccentric ABH-based circular DVA whose thickness profile is tailored according to a circumferential gradient variation is proposed. This new configuration preserves the ABH profile in the radial direction and breaks the axisymmetric of the original DVA design at the same time. While the former permits the ABH features to fully play out in a continuous manner, the later entails a more effective coupling with the host structure. These salient properties have been demonstrated and confirmed both numerically and experimentally by examining a benchmark plate structure. For analyses, a coupling model embracing the host structure and the add-on DVAs is established which allows the calculation of the coupling coefficient, a vital quantity to guide the DVA design. Studies demonstrate the advantages of the proposed DVA over existing designs for the same given mass. The enriched structural coupling and the enhanced modal damping, arising from the eccentric and circumferentially graded ABH design, are shown to be the origin of such improvement. All in all, the physical process underpinning the dynamic absorber principle and waveguide absorber from the host structures is simultaneously consolidated, thus leading to superior broadband structural vibration suppression. [DOI: 10.1115/1.4053475]

Original languageEnglish
Article number4053475
JournalJournal of Vibration and Acoustics, Transactions of the ASME
Issue number2
Publication statusPublished - Apr 2022


  • acoustic black hole
  • control
  • coupling analysis
  • dynamic vibration absorber
  • dynamics
  • modal analysis
  • structural dynamics
  • vibration control

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Mechanics of Materials
  • Mechanical Engineering


Dive into the research topics of 'A Circular Eccentric Vibration Absorber With Circumferentially Graded Acoustic Black Hole Features'. Together they form a unique fingerprint.

Cite this