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Volume 28 Issue 3
Aug.  2022
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TAN Hongbo, ZHAO Hong, XU Haiting. Sound characteristics of the viscoelastic layer containing periodic cavities by the finite element method[J]. ACTA ACUSTICA, 2003, 28(3): 277-282. DOI: 10.15949/j.cnki.0371-0025.2003.03.015
Citation: TAN Hongbo, ZHAO Hong, XU Haiting. Sound characteristics of the viscoelastic layer containing periodic cavities by the finite element method[J]. ACTA ACUSTICA, 2003, 28(3): 277-282. DOI: 10.15949/j.cnki.0371-0025.2003.03.015
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Sound characteristics of the viscoelastic layer containing periodic cavities by the finite element method

  • 1. National Laboratory of Acoustics, Institute of Acoustics, The Chinese Academy of Sciences Beijing 100080;

  • 2. Qingdao Acoustic Laboratory, Institute of Acoustics, The Chinese Academy of Sciences Qingdao 266023

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  • PACS: 
    • 43.60  (声学信号处理)
    • 43.72  (语言处理与通信系统)
  • Received Date: September 25, 2001
  • Revised Date: June 13, 2002
  • Available Online: August 03, 2022
    Graphical Abstract
    • Abstract
  • The finite element method is applied to analyze sound characteristics of the viscoelastic layer containing periodic cavities when it is immersed in the water or adhered to a steel flat between water and air. The results show that the reflection coefficients of the viscoelastic layer with periodic cavities are bigger than that without cavities at low frequency. The resonance of cavities can affect the sound characteristics. Moreover, numerical results are obtained for the viscoelastic layer with spherical, cylindrical or cone-shaped cavities and the modes of their vibrations are analyzed.
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