Picture of person typing on laptop with programming code visible on the laptop screen

World class computing and information science research at Strathclyde...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of Open Access research papers by University of Strathclyde researchers, including by researchers from the Department of Computer & Information Sciences involved in mathematically structured programming, similarity and metric search, computer security, software systems, combinatronics and digital health.

The Department also includes the iSchool Research Group, which performs leading research into socio-technical phenomena and topics such as information retrieval and information seeking behaviour.

Explore

Vibration analysis of a circular plate in interaction with an acoustic cavity leading to extraction of structural modal parameters

Gorman, Daniel G. and Trendafilova, Irina and Mulholland, Anthony J. and Horáček, Jaromir (2008) Vibration analysis of a circular plate in interaction with an acoustic cavity leading to extraction of structural modal parameters. Thin-Walled Structures, 46 (7-9). pp. 878-886. ISSN 0263-8231

[img]
Preview
Text (strathprints005775)
strathprints005775.pdf - Accepted Author Manuscript

Download (251kB) | Preview

Abstract

When carrying out vibration health monitoring (VHM) of a structure it is usually assumed that the structure is in the absence of fluid interaction and that any environmental effects which can cause changes in natural frequency either remain constant or are negligible. In certain cases, this condition cannot be assumed and therefore it is necessary to extract values of natural frequencies of the structure for the condition with no fluid interaction from those values measured. This paper considers the case of 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 fluid interaction can be obtained from those of the plate in interaction with the fluid.