Prediction of radiated sound power from vibrating structures using the surface contribution method

Herwig Peters, Nicole Kessissoglou, Eric Lösche, Steffen Marburg

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

1 Zitat (Scopus)

Abstract

A common measure for near-field acoustic energy of a vibrating structure is the acoustic intensity, which usually has positive and negative values that correspond to energy sources and sinks on the surface of the radiating structure. Sound from source and sink areas partially cancel each other and only a fraction of the near-field acoustic energy reaches the far-field. In this paper, an alternative method to identify the surface areas of a vibrating structure that contribute to the radiated sound power is described. The surface contributions of the structure are based on the acoustic radiation modes and are computed for all boundaries of the acoustic domain. In contrast to the sound intensity, the surface contributions are always positive and no cancellation effects exist. To illustrate the method, the radiated sound power from a resonator is presented.

OriginalspracheEnglisch
TitelAnnual Conference of the Australian Acoustical Society 2013, Acoustics 2013
UntertitelScience, Technology and Amenity
Herausgeber (Verlag)Australian Acoustical Society
Seiten193-196
Seitenumfang4
ISBN (Print)9781632662682
PublikationsstatusVeröffentlicht - 2013
Extern publiziertJa
VeranstaltungAnnual Conference of the Australian Acoustical Society 2013: Science, Technology and Amenity, Acoustics 2013 - Victor Harbor, SA, Australien
Dauer: 17 Nov. 201320 Nov. 2013

Publikationsreihe

NameAnnual Conference of the Australian Acoustical Society 2013, Acoustics 2013: Science, Technology and Amenity

Konferenz

KonferenzAnnual Conference of the Australian Acoustical Society 2013: Science, Technology and Amenity, Acoustics 2013
Land/GebietAustralien
OrtVictor Harbor, SA
Zeitraum17/11/1320/11/13

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