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Article: The jump phenomenon effect on the sound absorption of a nonlinear panel absorber and sound transmission loss of a nonlinear panel backed by a cavity

TitleThe jump phenomenon effect on the sound absorption of a nonlinear panel absorber and sound transmission loss of a nonlinear panel backed by a cavity
Authors
KeywordsNonlinear Vibration
Panel Absorber
Sound Absorption
Sound Transmission Loss
Issue Date2012
PublisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0924-090X
Citation
Nonlinear Dynamics, 2012, v. 69 n. 1-2, p. 99-116 How to Cite?
AbstractTheoretical analysis of the nonlinear vibration effects on the sound absorption of a panel absorber and sound transmission loss of a panel backed by a rectangular cavity is herein presented. The harmonic balance method is employed to derive a structural acoustic formulation from two-coupled partial differential equations representing the nonlinear structural forced vibration and induced acoustic pressure; one is the well-known von Karman's plate equation and the other is the homogeneous wave equation. This method has been used in a previous study of nonlinear structural vibration, in which its results agreed well with the elliptic solution. To date, very few classical solutions for this nonlinear structural-acoustic problem have been developed, although there are many for nonlinear plate or linear structural-acoustic problems. Thus, for verification purposes, an approach based on the numerical integration method is also developed to solve the nonlinear structural-acoustic problem. The solutions obtained with the two methods agree well with each other. In the parametric study, the panel displacement amplitude converges with increases in the number of harmonic terms and acoustic and structural modes. The effects of excitation level, cavity depth, boundary condition, and damping factor are also examined. The main findings include the following: (1) the well-known "jump phenomenon" in nonlinear vibration is seen in the sound absorption and transmission loss curves; (2) the absorption peak and transmission loss dip due to the nonlinear resonance are significantly wider than those in the linear case because of the wider resonant bandwidth; and (3) nonlinear vibration has the positive effect of widening the absorption bandwidth, but it also degrades the transmission loss at the resonant frequency. © 2011 Springer Science+Business Media B.V.
Persistent Identifierhttp://hdl.handle.net/10722/150615
ISSN
2015 Impact Factor: 3.0
2015 SCImago Journal Rankings: 1.511
ISI Accession Number ID
Funding AgencyGrant Number
City University of Hong KongSRG 7002697
Funding Information:

The research reported in this paper was fully supported by a grant from the City University of Hong Kong [SRG 7002697].

 

DC FieldValueLanguage
dc.contributor.authorLee, YYen_US
dc.contributor.authorLi, QSen_US
dc.contributor.authorLeung, AYTen_US
dc.contributor.authorSu, RKLen_US
dc.date.accessioned2012-06-26T06:06:09Z-
dc.date.available2012-06-26T06:06:09Z-
dc.date.issued2012en_US
dc.identifier.citationNonlinear Dynamics, 2012, v. 69 n. 1-2, p. 99-116en_US
dc.identifier.issn0924-090Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/150615-
dc.description.abstractTheoretical analysis of the nonlinear vibration effects on the sound absorption of a panel absorber and sound transmission loss of a panel backed by a rectangular cavity is herein presented. The harmonic balance method is employed to derive a structural acoustic formulation from two-coupled partial differential equations representing the nonlinear structural forced vibration and induced acoustic pressure; one is the well-known von Karman's plate equation and the other is the homogeneous wave equation. This method has been used in a previous study of nonlinear structural vibration, in which its results agreed well with the elliptic solution. To date, very few classical solutions for this nonlinear structural-acoustic problem have been developed, although there are many for nonlinear plate or linear structural-acoustic problems. Thus, for verification purposes, an approach based on the numerical integration method is also developed to solve the nonlinear structural-acoustic problem. The solutions obtained with the two methods agree well with each other. In the parametric study, the panel displacement amplitude converges with increases in the number of harmonic terms and acoustic and structural modes. The effects of excitation level, cavity depth, boundary condition, and damping factor are also examined. The main findings include the following: (1) the well-known "jump phenomenon" in nonlinear vibration is seen in the sound absorption and transmission loss curves; (2) the absorption peak and transmission loss dip due to the nonlinear resonance are significantly wider than those in the linear case because of the wider resonant bandwidth; and (3) nonlinear vibration has the positive effect of widening the absorption bandwidth, but it also degrades the transmission loss at the resonant frequency. © 2011 Springer Science+Business Media B.V.en_US
dc.languageengen_US
dc.publisherSpringer Verlag Dordrecht. The Journal's web site is located at http://springerlink.metapress.com/openurl.asp?genre=journal&issn=0924-090Xen_US
dc.relation.ispartofNonlinear Dynamicsen_US
dc.subjectNonlinear Vibrationen_US
dc.subjectPanel Absorberen_US
dc.subjectSound Absorptionen_US
dc.subjectSound Transmission Lossen_US
dc.titleThe jump phenomenon effect on the sound absorption of a nonlinear panel absorber and sound transmission loss of a nonlinear panel backed by a cavityen_US
dc.typeArticleen_US
dc.identifier.emailSu, RKL:klsu@hkucc.hku.hken_US
dc.identifier.authoritySu, RKL=rp00072en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1007/s11071-011-0249-2en_US
dc.identifier.scopuseid_2-s2.0-84861734877-
dc.identifier.hkuros216917-
dc.identifier.volume69-
dc.identifier.issue1-2-
dc.identifier.spage99en_US
dc.identifier.epage116en_US
dc.identifier.isiWOS:000304651400008-
dc.publisher.placeNetherlandsen_US
dc.identifier.scopusauthoridLee, YY=24465249400en_US
dc.identifier.scopusauthoridLi, QS=53982746100en_US
dc.identifier.scopusauthoridLeung, AYT=7403012564en_US
dc.identifier.scopusauthoridSu, RKL=7102627096en_US
dc.identifier.citeulike10007981-

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