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Reduction of the sound transmission of a periodic sandwich plate using the stop band concept
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Vibration monitoring. National University of Defense Technology, China.
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering, MWL Vibration monitoring.ORCID iD: 0000-0002-9632-8398
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2015 (English)In: Composite structures, ISSN 0263-8223, E-ISSN 1879-1085, Vol. 128, 428-436 p.Article in journal (Refereed) Published
Abstract [en]

The sound transmission of a sandwich plate and its reduction using the stop band concept are investigated in this paper. A periodic sandwich plate consisting of a host plate and the attached structures is designed. The dispersion relation and the stop band of the periodic sandwich plate are studied first. The sound transmission of the periodic and bare sandwich plates is analysed and compared. The reduction from the stop band design (i.e., periodically adding stepped resonators) on the sound transmission of the sandwich plates is studied. The reasons for this reduction are analysed. In addition, the properties of the sandwich plate with different boundary conditions are also briefly studied. The numerical results indicate that the sound transmission is significantly reduced over the stop band of the periodic sandwich plate. The improvement can also exist in the frequency range outside the stop band.

Place, publisher, year, edition, pages
2015. Vol. 128, 428-436 p.
Keyword [en]
Reduction, Sandwich plate, Sound transmission, Stop band, Acoustic wave transmission, Architectural acoustics, Dispersions, Plates (structural components), Different boundary condition, Dispersion relations, Frequency ranges, Numerical results, Sandwich plates, Stop-bands, Periodic structures
National Category
Fluid Mechanics and Acoustics
Identifiers
URN: urn:nbn:se:kth:diva-167684DOI: 10.1016/j.compstruct.2015.02.053ISI: 000354583300038Scopus ID: 2-s2.0-84927602969OAI: oai:DiVA.org:kth-167684DiVA: diva2:816136
Note

QC 20150602

Available from: 2015-06-02 Created: 2015-05-22 Last updated: 2017-12-04Bibliographically approved
In thesis
1. Properties of vibration and sound transmission of plates with stop bands
Open this publication in new window or tab >>Properties of vibration and sound transmission of plates with stop bands
2014 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. viii, 37 p.
Series
TRITA-AVE, ISSN 1651-7660 ; 2014:74
National Category
Vehicle Engineering
Identifiers
urn:nbn:se:kth:diva-158025 (URN)
Presentation
2014-12-17, Hugin, Teknikringen 8, KTH, Stockholm, 13:00 (English)
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Note

QC 20141219

Available from: 2014-12-19 Created: 2014-12-19 Last updated: 2015-06-02Bibliographically approved

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Feng, Leping

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