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Article: Parametric study of a drum-like silencer

TitleParametric study of a drum-like silencer
Authors
Issue Date2004
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jsvi
Citation
Journal Of Sound And Vibration, 2004, v. 269 n. 3-5, p. 467-488 How to Cite?
AbstractAn optimization study is carried out for a silencer consisting of two side-branch, rectangular cavities covered by membranes highly stretched in the direction of the duct axis. Stopband is defined as the range of frequency where the transmission loss is everywhere higher than the peak value of that in an expansion chamber which occupies three times as much cavity volume as does the present silencer. The logarithmic bandwidth is optimized with respect to the length-to-depth ratio of the cavity, the mass and the tension of the membrane. For two cavities each with a dimensionless volume of 5 (the duct height being the length scale), the optimal cavity aspect ratio is 6.6, and the lower stopband frequency is 0.09 times the first cut-on frequency of the rigid duct. This is compared favourably with the traditional duct lining modelled as an equivalent fluid. As the membrane mass increases, the stopband shifts to lower frequencies but it also narrows. The widest stopband is around 1.6 octaves for a massless membrane. The membrane tension plays a delicate role of setting the intervals between adjacent spectral peaks. © 2003 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/156703
ISSN
2015 Impact Factor: 2.107
2015 SCImago Journal Rankings: 1.494
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorHuang, Len_US
dc.date.accessioned2012-08-08T08:43:36Z-
dc.date.available2012-08-08T08:43:36Z-
dc.date.issued2004en_US
dc.identifier.citationJournal Of Sound And Vibration, 2004, v. 269 n. 3-5, p. 467-488en_US
dc.identifier.issn0022-460Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/156703-
dc.description.abstractAn optimization study is carried out for a silencer consisting of two side-branch, rectangular cavities covered by membranes highly stretched in the direction of the duct axis. Stopband is defined as the range of frequency where the transmission loss is everywhere higher than the peak value of that in an expansion chamber which occupies three times as much cavity volume as does the present silencer. The logarithmic bandwidth is optimized with respect to the length-to-depth ratio of the cavity, the mass and the tension of the membrane. For two cavities each with a dimensionless volume of 5 (the duct height being the length scale), the optimal cavity aspect ratio is 6.6, and the lower stopband frequency is 0.09 times the first cut-on frequency of the rigid duct. This is compared favourably with the traditional duct lining modelled as an equivalent fluid. As the membrane mass increases, the stopband shifts to lower frequencies but it also narrows. The widest stopband is around 1.6 octaves for a massless membrane. The membrane tension plays a delicate role of setting the intervals between adjacent spectral peaks. © 2003 Elsevier Science Ltd. All rights reserved.en_US
dc.languageengen_US
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jsvien_US
dc.relation.ispartofJournal of Sound and Vibrationen_US
dc.titleParametric study of a drum-like 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.doi10.1016/S0022-460X(02)01642-5en_US
dc.identifier.scopuseid_2-s2.0-0345870032en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0345870032&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume269en_US
dc.identifier.issue3-5en_US
dc.identifier.spage467en_US
dc.identifier.epage488en_US
dc.identifier.isiWOS:000188195100002-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridHuang, L=7404735514en_US

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