Vibro-acoustic analysis of a rectangular-like cavity with a tilted wall

Y. Y. Li, Li Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

46 Citations (Scopus)

Abstract

In this paper, a fully coupled vibro-acoustic model is developed to characterize the structural and acoustic coupling of a flexible panel backed by a rectangular-like cavity with a slight geometrical distortion, which is introduced through a tilted wall. The combined integro-modal approach is used to handle the acoustic pressure inside the irregular-shaped cavity. Based on the model proposed, the distortion effect on the vibro-acoustic behavior of the coupled system is investigated using the averaged sound pressure level inside the enclosure and the averaged quadratic velocity of the vibrating plate. Simulations are conducted to examine the distortion effect on acoustic natural frequencies, acoustic pressures and structural responses. Effects of the wall inclination on coupling coefficients are also assessed, and an index is proposed to quantify the degree of variation of coupling strength.
Original languageEnglish
Pages (from-to)739-751
Number of pages13
JournalApplied Acoustics
Volume68
Issue number7
DOIs
Publication statusPublished - 1 Jul 2007

Keywords

  • Coupling
  • Rectangular-like cavity
  • Tilted wall
  • Vibro-acoustic analysis

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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