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Vibration analysis of a circular plate in interaction with an acoustic cavity leading to extraction of structural modal parameters
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SYSNO ASEP 0310370 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Vibration analysis of a circular plate in interaction with an acoustic cavity leading to extraction of structural modal parameters Title Vibrační analýza kruhové desky v interakci s akustickou dutinou zaměřená na extrakci strukturálních modálních parametrů Author(s) Gorman, D. G. (DE)
Trendafilova, I. (GB)
Mulholland, A.J. (GB)
Horáček, Jaromír (UT-L) RID, ORCIDSource Title Thin-Walled Structures. - : Elsevier - ISSN 0263-8231
Roč. 46, 7-9 (2008), s. 878-886Number of pages 9 s. Language eng - English Country GB - United Kingdom Keywords vibration health monitoring ; structural/fluid vibration interaction ; plates Subject RIV BI - Acoustics R&D Projects IAA200760613 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20760514 - UT-L (2005-2011) UT WOS 000257517600018 DOI https://doi.org/10.1016/j.tws.2008.01.004 Annotation In vibration monitoring of a structure it is usually assumed the absence of an interaction and any fluid effects which can cause changes in natural frequency. In certain cases, this cannot be assumed and it is necessary to extract values of natural frequencies of the structure with no interaction from the values for the structure with fluid interaction from the values measured. This paper considers a thin circular plate in contact with a fluid cavity giving rise to strong structural/fluid vibration interaction. The paper details the free vibration analysis of the coupled system and through consideration of modal energy, illustrates how the affined modes of vibration of the plate and the fluid can be qualitatively described. The paper then introduces a method by which the natural frequencies of the plate in the absence of interaction can be obtained from those of the plate in interaction with the fluid. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2009
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