Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/96110
Title: | Hybrid silencers with micro-perforated panels and internal partitions | Authors: | Yu, X Cheng, L You, X |
Issue Date: | Feb-2015 | Source: | Journal of the Acoustical Society of America, Feb. 2015, v. 137, no. 2, p. 951-962 | Abstract: | A sub-structuring approach, along with a unit cell treatment, is proposed to model expansion chamber silencers with internal partitions and micro-perforated panels (MPPs) in the absence of internal flow. The side-branch of the silencer is treated as a combination of unit cells connected in series. It is shown that, by connecting multiple unit cells with varying parameters, the noise attenuation bandwidth can be enlarged. With MPPs, the hybrid noise attenuation mechanism of the silencer is revealed. Depending on the size of the perforation hole, noise attenuation can be dominated by dissipative, reactive, or combined effects together. For a broadband sound absorption, the hole size, together with the perforation ratio and other parameters, can be optimized to strike a balance between the dissipative and reactive effect, for ultimately achieving the desired noise attenuation performance within a prescribed frequency region. The modular nature of the proposed formulation allows doing this in a flexible, accurate, and cost effective manner. The accuracy of the proposed approach is validated through comparisons with finite element method and experiments. | Publisher: | Acoustical Society of America | Journal: | Journal of the Acoustical Society of America | ISSN: | 0001-4966 | EISSN: | 1520-8524 | DOI: | 10.1121/1.4906148 | Rights: | © 2015 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 Yu, X., Cheng, L., & You, X. (2015). Hybrid silencers with micro-perforated panels and internal partitions. The Journal of the Acoustical Society of America, 137(2), 951-962 and may be found at http://dx.doi.org/10.1121/1.4906148 |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
1.4906148.pdf | 2.28 MB | Adobe PDF | View/Open |
Page views
54
Last Week
0
0
Last month
Citations as of May 19, 2024
Downloads
57
Citations as of May 19, 2024
SCOPUSTM
Citations
61
Citations as of May 16, 2024
WEB OF SCIENCETM
Citations
45
Citations as of May 16, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.