Journal of Jishou University(Natural Sciences Edition) ›› 2021, Vol. 42 ›› Issue (4): 27-30.DOI: 10.13438/j.cnki.jdzk.2021.04.006

• Physics • Previous Articles     Next Articles

Study on Sound Insulation of Second Order Helmholtz Resonator

ZHAO Zhun,KONG Peng, DENG Ke   

  1. (College of Physics and Mechanical & Electrical Engineering, Jishou University, Jishou 416000, Hunan China)
  • Online:2021-07-25 Published:2021-11-17

Abstract: Based on the sound insulation characteristics of the traditional Helmholtz resonator, the equivalent impedance of the Helmholtz resonator based on second-order resonance is derived by using the transfer matrix method layering, and the sound insulation characteristics of the second-order Helmholtz resonator are studied in combination with finite element simulation. It is verified that there are two sound insulation bands in the second-order resonator, and excellent sound insulation effect can be obtained by adjusting the geometric parameters. It has some research significance in acoustic application of sound noise reduction.

Key words: Transfer matrix method, Second-order Helmholtz resonator, Double sound-insulated bands, Finite element simulation

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