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Control of flexural waves on a beam using multiple vibration neutralizers

Gao, Y. and Brennan, M.J., (2010) Control of flexural waves on a beam using multiple vibration neutralizers Brennan, M.J., Kovacic, Ivana, Lopes, V., Murphy, K., Petersson, B., Rizzi, S. and Yang, T. (eds.) In Recent Advances Structural Dynamics: Proceedings of the X International Conference. University of Southampton., 12pp.

Record type: Conference or Workshop Item (Paper)


This paper is concerned with the use of multiple vibration neutralisers to control the transmission of flexural waves on a beam. A simple design of a beam-like vibration neutraliser is of particular interest to exert a force and an uncoupled force-moment to the beam. The multiple neutralisers consist of several vibration neutralisers in an array attached over a certain length on the beam. General expressions for wave transmission and reflection metrics are derived. Based on the transmission efficiency, the characteristics of the multiple vibration neutralises are investigated in terms of the minimum transmission efficiency, the turned frequency bandwidth and the shape factor, allowing optimisation of their performance.

Analytical results show that the bandstop property of the multiple vibration neutralisers depends on various factors, including the neutraliser damping, mass, separation distance in the array and the moment arm. Moreover, it is found that the particular attachment configuration of the uncoupled force-moment neutraliser can be used to improve the overall performance. The theoretical work offers a scope for flexural wave suppression using multiple vibration neutralisers at the design stage.

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More information

Published date: 2010
Additional Information: Paper No.181 (Format - USB Pen Drive)
Keywords: flexural waves, multiple vibration neutralisers, transmission efficiency


Local EPrints ID: 160689
ISBN: 0854329102
PURE UUID: d4a16821-d758-4e08-9070-cfe00eaa1b78

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Date deposited: 20 Jul 2010 13:31
Last modified: 18 Jul 2017 12:34

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Author: Y. Gao
Author: M.J. Brennan
Editor: M.J. Brennan
Editor: Ivana Kovacic
Editor: V. Lopes
Editor: K. Murphy
Editor: B. Petersson
Editor: S. Rizzi
Editor: T. Yang

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