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Article: Vibroacoustics of three-dimensional drum silencer

TitleVibroacoustics of three-dimensional drum silencer
Authors
Issue Date2005
PublisherAcoustical Society of America. The Journal's web site is located at http://asa.aip.org/jasa.html
Citation
Journal Of The Acoustical Society Of America, 2005, v. 118 n. 4, p. 2313-2320 How to Cite?
AbstractWhen a segment of a rigid duct wall is replaced by a membrane and is backed by a cavity, incident noise induces membrane vibrations and causes noise reflection. The reflection is effective over a broad band in the low-frequency region when a certain high tension is applied on the membrane in the axial direction of the duct. The device is thus called a drumlike silencer. The existing vibroacoustic theory is based on a two-dimensional duct model and the membrane is reduced to a one-dimensional string. This study extends the theory to three dimensions for the duct and two dimensions for the membrane which has all four edges fixed. It is shown, analytically, that the lateral tension is always detrimental to the silencing performance. However, the optimal performance of the one-dimensional string is recovered exactly when the lateral tension on the two-dimensional membrane vanishes despite the very different boundary conditions. The conclusion is validated experimentally, paving the way for the application of the drum silencer in which the cavity is completely separated from the gas flow in the duct. © 2005 Acoustical Society of America.
Persistent Identifierhttp://hdl.handle.net/10722/156788
ISSN
2015 Impact Factor: 1.572
2015 SCImago Journal Rankings: 0.938
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHuang, Len_US
dc.contributor.authorChoy, YSen_US
dc.date.accessioned2012-08-08T08:43:58Z-
dc.date.available2012-08-08T08:43:58Z-
dc.date.issued2005en_US
dc.identifier.citationJournal Of The Acoustical Society Of America, 2005, v. 118 n. 4, p. 2313-2320en_US
dc.identifier.issn0001-4966en_US
dc.identifier.urihttp://hdl.handle.net/10722/156788-
dc.description.abstractWhen a segment of a rigid duct wall is replaced by a membrane and is backed by a cavity, incident noise induces membrane vibrations and causes noise reflection. The reflection is effective over a broad band in the low-frequency region when a certain high tension is applied on the membrane in the axial direction of the duct. The device is thus called a drumlike silencer. The existing vibroacoustic theory is based on a two-dimensional duct model and the membrane is reduced to a one-dimensional string. This study extends the theory to three dimensions for the duct and two dimensions for the membrane which has all four edges fixed. It is shown, analytically, that the lateral tension is always detrimental to the silencing performance. However, the optimal performance of the one-dimensional string is recovered exactly when the lateral tension on the two-dimensional membrane vanishes despite the very different boundary conditions. The conclusion is validated experimentally, paving the way for the application of the drum silencer in which the cavity is completely separated from the gas flow in the duct. © 2005 Acoustical Society of America.en_US
dc.languageengen_US
dc.publisherAcoustical Society of America. The Journal's web site is located at http://asa.aip.org/jasa.htmlen_US
dc.relation.ispartofJournal of the Acoustical Society of Americaen_US
dc.titleVibroacoustics of three-dimensional drum silenceren_US
dc.typeArticleen_US
dc.identifier.emailHuang, L:lixi@hku.hken_US
dc.identifier.authorityHuang, L=rp00119en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1121/1.2010353en_US
dc.identifier.scopuseid_2-s2.0-26844562370en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-26844562370&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume118en_US
dc.identifier.issue4en_US
dc.identifier.spage2313en_US
dc.identifier.epage2320en_US
dc.identifier.isiWOS:000232712700026-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridHuang, L=7404735514en_US
dc.identifier.scopusauthoridChoy, YS=7004920275en_US

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