Finite periodic structure of beam for low frequency structure-borne sound attenuation

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Unwanted vibration in ships, aircraft and buildings is often caused by the operation of machinery and transmitted into the structure through connected beams. The attenuation of vibrational power transmission in low frequencies has been a difficult problem for a long time. Recently, a series of studies about the elastic wave propagation in locally resonant sonic materials have found that phonon-like acoustic structures can have even better sound attenuation performances than before in a lower range of frequencies due to phonon resonance and Bragg interference phenomena. It is also supposed to effectively attenuate low-frequency vibrational waves in a beam-type one dimensional system by using the periodic phonon structure, the decay and transform of flexural waves in a beam with ternary locally resonant elements attached is studied in this paper.
Original languageEnglish
Title of host publication14th International Congress on Sound and Vibration 2007, ICSV 2007
Pages188-194
Number of pages7
Volume1
Publication statusPublished - 1 Dec 2007
Event14th International Congress on Sound and Vibration 2007, ICSV 2007 - Cairns, QLD, Australia
Duration: 9 Jul 200712 Jul 2007

Conference

Conference14th International Congress on Sound and Vibration 2007, ICSV 2007
CountryAustralia
CityCairns, QLD
Period9/07/0712/07/07

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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