Modifications of acoustic modes and coupling due to a leaning wall in a rectangular cavity

Y. Y. Li, Li Cheng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

45 Citations (Scopus)


Acoustic modes and the coupling characteristics of a rectangular-like cavity with a slight geometrical distortion introduced through a leaning wall are investigated in this paper. A pressure variation index is proposed to quantify the global changes in acoustic modes caused by the inclination of the wall. Effects on the coupling between acoustic modes and structural modes are investigated using coupling coefficients. Numerical results show a simple relationship between the distortion effect and the acoustic wavelength. The effect is most significant when the distortion approaches the half wavelength. Compared with a rectangular enclosure, the existence of the leaning wall gives rise to a much more effective coupling between the structure and the enclosure.
Original languageEnglish
Pages (from-to)3312-3318
Number of pages7
JournalJournal of the Acoustical Society of America
Issue number6
Publication statusPublished - 1 Dec 2004

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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