Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106371
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Liu, Y | - |
dc.creator | Du, J | - |
dc.creator | Cheng, L | - |
dc.date.accessioned | 2024-05-09T00:53:03Z | - |
dc.date.available | 2024-05-09T00:53:03Z | - |
dc.identifier.issn | 0001-4966 | - |
dc.identifier.uri | http://hdl.handle.net/10397/106371 | - |
dc.language.iso | en | en_US |
dc.publisher | AIP Publishing LLC | en_US |
dc.rights | Copyright (2020) 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. | en_US |
dc.rights | The following article appeared in Yang Liu, Jingtao Du, Li Cheng; Radiation modes and sound radiation from a flexible structure mounted in a duct. J. Acoust. Soc. Am. 1 May 2020; 147 (5): 3465–3475 and may be found at https://doi.org/10.1121/10.0001258. | en_US |
dc.title | Radiation modes and sound radiation from a flexible structure mounted in a duct | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 3465 | - |
dc.identifier.epage | 3475 | - |
dc.identifier.volume | 147 | - |
dc.identifier.issue | 5 | - |
dc.identifier.doi | 10.1121/10.0001258 | - |
dcterms.abstract | The concept of the radiation modes, originally proposed for free-field problems, has found its widespread use in sound radiation analyses of vibrating structures and their active control applications. In this paper, the sound radiation of a flexible structure, flush-mounted inside a duct in both 2D and 3D configurations, is investigated via an energy-based formulation in conjunction with the near-field integration technique. The structural radiation characteristics are first discussed in terms of modal radiation efficiency, which exhibits obvious oscillating behavior with respect to frequencies, in which symmetric patterns are dominant with smooth variations for small acoustic wavenumbers. Then the interior sound radiation modes are investigated. It is shown that, as compared with their free-space counterparts, the lower-order radiation modes in a duct are more sensitive and prone to be affected by the duct starting from its cut-on frequency. Drastic changes in the radiation mode shapes are observed around the cut-on frequency and each of its multiples/harmonics. Finally, analyses are extended to a coupled panel-duct system. It is observed that, contrary to the free-space case, lower-order radiation modes exhibit predominant variations along the duct length direction, suggesting a possible simplification of the 3D configuration into a 2D one. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Journal of the Acoustical Society of America, May 2020, v. 147, no. 5, p. 3465-3475 | - |
dcterms.isPartOf | Journal of the Acoustical Society of America | - |
dcterms.issued | 2020-05 | - |
dc.identifier.scopus | 2-s2.0-85085909870 | - |
dc.identifier.pmid | 32486823 | - |
dc.identifier.eissn | 1520-8524 | - |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | ME-0267 | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Natural Science Foundation of China; Fok Ying Tung Education Foundation | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 22192195 | en_US |
dc.description.oaCategory | VoR allowed | en_US |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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3465_1_online.pdf | 4.09 MB | Adobe PDF | View/Open |
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