Vibration and sound radiation characteristics of composite flat-panel sound radiator

C. H. Jiang, Tai-Yan Kam

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The vibration and sound radiation characteristics of laminated composite flat-panel sound radiators are studied via both theoretical and experimental approaches. In the theoretical study, a finite element model is presented to formulate the forced vibration of the sound radiators. The first Rayleigh integral is used to construct the sound pressure level curve of the sound radiators. In the experimental study, a laminated composite sound radiator was subjected to sweep sine excitation to determine the frequency response spectrum from which the natural frequencies of the sound radiator were identified. The sound radiator with salt powder distributed on its top surface was excited to generate the vibration shapes of the sound radiator at several selected frequencies. The SPL curve of the sound radiator was also measured experimentally. The experimental results are then used to verify the feasibility and accuracy of the proposed finite element model.

Original languageEnglish
Title of host publicationMechanical Engineering, Industrial Materials and Industrial Electronics
Pages177-181
Number of pages5
DOIs
StatePublished - 6 Nov 2013
Event2013 International Conference on Mechanical Engineering, Industrial Materials and Industrial Electronics, MII 2013 - Hong Kong, China
Duration: 1 Sep 20132 Sep 2013

Publication series

NameApplied Mechanics and Materials
Volume431
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2013 International Conference on Mechanical Engineering, Industrial Materials and Industrial Electronics, MII 2013
CountryChina
CityHong Kong
Period1/09/132/09/13

Keywords

  • Composite plate
  • Sound pressure
  • Sound radiation
  • Vibration

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  • Cite this

    Jiang, C. H., & Kam, T-Y. (2013). Vibration and sound radiation characteristics of composite flat-panel sound radiator. In Mechanical Engineering, Industrial Materials and Industrial Electronics (pp. 177-181). (Applied Mechanics and Materials; Vol. 431). https://doi.org/10.4028/www.scientific.net/AMM.431.177