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Two observations on the wave approach to SEA: Keynote Lecture
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Structural and vibroacoustics.ORCID iD: 0000-0002-9031-3662
2007 (English)In: 14th International Congress on Sound and Vibration 2007, ICSV 2007, 2007, 4483-4501 p.Conference paper (Refereed)
Abstract [en]

First, it is shown that the use of SEA coupling factors derived for the coupling of semi infinite systems is consistent with coupling power proportionality. This demonstration is axiomatic, relying on a set of postulates. It is useful in teaching SEA, as it illustrates concepts and assumptions commonly made. It might be useful for research aiming for a better set of postulates upon which a statistical energy method can be built. Second, the wave motion in double walls is investigated. A new SEA formulation is presented in which each element describe one kind of coupled cavity-wall wave motion. This formulation obsoletes the non-resonant transmission paths and compared to classical formulations, it improves results at frequencies around and a bit above the double wall resonance.

Place, publisher, year, edition, pages
2007. 4483-4501 p.
Keyword [en]
Coupling factor, Coupling power, Nonresonant, Semi-infinite systems, Statistical energy methods, Transmission paths, Wave approach, Wave motions
National Category
Applied Mechanics
URN: urn:nbn:se:kth:diva-78119ScopusID: 2-s2.0-84881463618ISBN: 978-162748000-0OAI: diva2:492310
14th International Congress on Sound and Vibration 2007, ICSV 2007; Cairns, QLD; Australia; 9 July 2007 through 12 July 2007
Swedish Research Council, 621-2005-5754

QC 20120208

Available from: 2012-02-08 Created: 2012-02-07 Last updated: 2014-10-27Bibliographically approved

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ICSV_XIV_Finnveden(376 kB)144 downloads
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