Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106483
DC Field | Value | Language |
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dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Liu, Y | - |
dc.creator | Du, J | - |
dc.creator | Cheng, L | - |
dc.date.accessioned | 2024-05-09T00:53:48Z | - |
dc.date.available | 2024-05-09T00:53:48Z | - |
dc.identifier.issn | 0001-4966 | - |
dc.identifier.uri | http://hdl.handle.net/10397/106483 | - |
dc.language.iso | en | en_US |
dc.publisher | AIP Publishing LLC | en_US |
dc.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. | en_US |
dc.rights | The following article appeared in Yang Liu, Jingtao Du, Li Cheng; Analytical coupled vibro-acoustic modeling of a cavity-backed duct-membrane system with uniform mean flow. J. Acoust. Soc. Am. 1 September 2018; 144 (3): 1368–1380 and may be found at https://doi.org/10.1121/1.5053586. | en_US |
dc.title | Analytical coupled vibro-acoustic modeling of a cavity-backed duct-membrane system with uniform mean flow | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 1368 | - |
dc.identifier.epage | 1380 | - |
dc.identifier.volume | 144 | - |
dc.identifier.issue | 3 | - |
dc.identifier.doi | 10.1121/1.5053586 | - |
dcterms.abstract | Sound propagation in a flow duct is a complex and technically challenging problem. The presence of flexible vibrating walls inside the duct creates additional difficulties to the problem due to the complex vibro-acoustic and aero-acoustic couplings involved in the system. An accurate prediction of the coupled system response is of great importance for a good understanding of the underlying physics as well as the optimal design of relevant noise suppression devices. In the present work, a unified energy formulation is proposed for the fully coupled structural-acoustic modelling of a duct-mounted membrane backed by an acoustic cavity with a grazing flow. Sufficiently smoothed admissible functions, taking the form of a combination of Fourier series and supplementary polynomials, are constructed to overcome the differential discontinuities for various boundary and/or coupling conditions. The formulation allows the obtention of all relevant vibro-acoustic field information in conjunction with the generalized Lighthill equation and Rayleigh-Ritz procedure. The validation and convergence studies show the accuracy and the efficiency of the proposed model. Results show the strong structural-acoustic interaction in such a duct-membrane-cavity system, and the flow affects resonant amplitude of membrane-dominant modes significantly. Some cross-zones can be observed for the membrane kinetic energy frequency response with low Mach number cases, especially when a higher tension is applied to the membrane. Analyses on the structural-acoustic coupling strength indicate that the coupling between the odd-even structural modes becomes more significant at a higher Mach number compared with odd-odd and even-even mode pairs. It is also shown that adjusting the boundary constraint of the membrane or imposing a higher tensile force allows impairing the adverse influence of the flow in the duct on sound attenuation. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Journal of the Acoustical Society of America, Sept 2018, v. 144, no. 3, p. 1368-1380 | - |
dcterms.isPartOf | Journal of the Acoustical Society of America | - |
dcterms.issued | 2018-09 | - |
dc.identifier.scopus | 2-s2.0-85053612868 | - |
dc.identifier.pmid | 30424642 | - |
dc.identifier.eissn | 1520-8524 | - |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | ME-0605 | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Fok Ying Tung Education Foundation; Innovation Fund of the Fundamental Research Funds for the Central Universities | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 14461512 | 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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1368_1_online.pdf | 5.61 MB | Adobe PDF | View/Open |
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