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Article: Analysis of absorption and reflection mechanisms in a three-dimensional plate silencer

TitleAnalysis of absorption and reflection mechanisms in a three-dimensional plate silencer
Authors
Issue Date2008
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jsvi
Citation
Journal Of Sound And Vibration, 2008, v. 313 n. 3-5, p. 510-524 How to Cite?
AbstractWhen a segment of a rigid duct is replaced by a plate backed by a hard-walled cavity, grazing incident sound waves induce plate vibration, hence sound reflection. Based on this mechanism, a broadband plate silencer, which works effectively from low-to-medium frequencies have been developed recently. A typical plate silencer consists of an expansion chamber with two side-branch cavities covered by light but extremely stiff plates. Such a configuration is two-dimensional in nature. In this paper, numerical study is extended to three-dimensional configurations to investigate the potential improvement in sound reflection. Finite element simulation shows that the three-dimensional configurations perform better than the corresponding two-dimensional design, especially in the relatively high frequency region. Further analysis shows that the three-dimensional design gives better plate response at higher axial modes than the simple two-dimensional design. Sound absorption mechanism is also introduced to the plate silencer by adding two dissipative chambers on the two lateral sides of a two-cavity wave reflector, hence a hybrid silencer. Numerical simulation shows that the proposed hybrid silencer is able to achieve a good moderate bandwidth with much reduced total length in comparison with pure absorption design. © 2007 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/75605
ISSN
2015 Impact Factor: 2.107
2015 SCImago Journal Rankings: 1.494
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorWang, Cen_HK
dc.contributor.authorHuang, Len_HK
dc.date.accessioned2010-09-06T07:12:48Z-
dc.date.available2010-09-06T07:12:48Z-
dc.date.issued2008en_HK
dc.identifier.citationJournal Of Sound And Vibration, 2008, v. 313 n. 3-5, p. 510-524en_HK
dc.identifier.issn0022-460Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/75605-
dc.description.abstractWhen a segment of a rigid duct is replaced by a plate backed by a hard-walled cavity, grazing incident sound waves induce plate vibration, hence sound reflection. Based on this mechanism, a broadband plate silencer, which works effectively from low-to-medium frequencies have been developed recently. A typical plate silencer consists of an expansion chamber with two side-branch cavities covered by light but extremely stiff plates. Such a configuration is two-dimensional in nature. In this paper, numerical study is extended to three-dimensional configurations to investigate the potential improvement in sound reflection. Finite element simulation shows that the three-dimensional configurations perform better than the corresponding two-dimensional design, especially in the relatively high frequency region. Further analysis shows that the three-dimensional design gives better plate response at higher axial modes than the simple two-dimensional design. Sound absorption mechanism is also introduced to the plate silencer by adding two dissipative chambers on the two lateral sides of a two-cavity wave reflector, hence a hybrid silencer. Numerical simulation shows that the proposed hybrid silencer is able to achieve a good moderate bandwidth with much reduced total length in comparison with pure absorption design. © 2007 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/jsvien_HK
dc.relation.ispartofJournal of Sound and Vibrationen_HK
dc.titleAnalysis of absorption and reflection mechanisms in a three-dimensional plate silenceren_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0022-460X&volume=313&spage=510&epage=524&date=2008&atitle=Analysis+of+absorption+and+reflection+mechanisms+in+a+three-dimensional+plate+silencer+en_HK
dc.identifier.emailHuang, L:lixi@hku.hken_HK
dc.identifier.authorityHuang, L=rp00119en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.jsv.2007.12.027en_HK
dc.identifier.scopuseid_2-s2.0-41549143819en_HK
dc.identifier.hkuros145639en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-41549143819&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume313en_HK
dc.identifier.issue3-5en_HK
dc.identifier.spage510en_HK
dc.identifier.epage524en_HK
dc.identifier.isiWOS:000255790600010-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridWang, C=23487195200en_HK
dc.identifier.scopusauthoridHuang, L=7404735514en_HK

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