Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/77574
Title: | Acoustic behaviors of the microperforated panel absorber array in nonlinear regime under moderate acoustic pressure excitation | Authors: | Chiang, YK Choy, YS |
Issue Date: | Jan-2018 | Source: | Journal of the Acoustical Society of America, Jan. 2018, v. 143, no. 1, p. 538-549 | Abstract: | The acoustic performance of a microperforated panel (MPP) absorber array in the nonlinear regime is investigated both numerically and experimentally. The MPP absorber array is constructed by three parallel-arranged MPP absorbers with different cavity depths. A finite element model is used to simulate the acoustic response of the MPP absorber array by adopting the nonlinear impedance model. The results show that the absorption of the MPP absorber array is affected by the incident sound pressure when it is beyond around 100 dB. With appropriate structural and perforation property of MPP, the MPP absorber array in non-linear regime outperforms that in linear regime due to the improvement of equivalent acoustic impedance matching with ambient air over wide frequency range. However, when the sound pressure excitation is too high, the local resonance effect of the resonating component MPP absorber is diminished and the sound absorption is decreased. With the carefully chosen properties of MPP, the performance degradation induced by panel vibration can be avoided. An optimal set of MPP properties to avoid the performance degradation induced by panel vibration is determined. The measured normal absorption coefficients of a prototype MPP absorber array compare well with the numerical prediction in both linear and nonlinear regimes. | Publisher: | Acoustical Society of America | Journal: | Journal of the Acoustical Society of America | ISSN: | 0001-4966 | EISSN: | 1520-8524 | DOI: | 10.1121/1.5021334 | Rights: | © 2018 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Chiang, Y. K., & Choy, Y. S. (2018). Acoustic behaviors of the microperforated panel absorber array in nonlinear regime under moderate acoustic pressure excitation. The Journal of the Acoustical Society of America, 143(1), 538-549 and may be found at http://dx.doi.org/10.1121/1.5021334. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1.5021334.pdf | 2 MB | Adobe PDF | View/Open |
Page views
89
Last Week
0
0
Last month
Citations as of Oct 13, 2024
Downloads
79
Citations as of Oct 13, 2024
SCOPUSTM
Citations
19
Last Week
0
0
Last month
Citations as of Oct 17, 2024
WEB OF SCIENCETM
Citations
16
Last Week
0
0
Last month
Citations as of Oct 17, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.