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Strategies for using cellular automata to locate constrained layer damping on vibrating structures

Chia, C M., Rongong, J.A. and Worden, K. (2009) Strategies for using cellular automata to locate constrained layer damping on vibrating structures. Journal of Sound and Vibration, 319 (1-2). pp. 119-139. ISSN 0022-460X

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Abstract

It is often hard to optimise constrained layer damping (CLD) for structures more complicated than simple beams and plates as its performance depends on its location, the shape of the applied patch, the mode shapes of the structure and the material properties. This paper considers the use of cellular automata (CA) in conjunction with finite element analysis to obtain an efficient coverage of CLD on structures. The effectiveness of several different sets of local rules governing the CA are compared against each other for a structure with known optimum coverage-namely a plate. The algorithm which attempts to replicate most closely known optimal configurations is considered the most successful. This algorithm is then used to generate an efficient CLD treatment that targets several modes of a curved composite panel. To validate the modelling approaches used, results are also presented of a comparison between theoretical and experimentally obtained modal properties of the damped curved panel.

Item Type: Article
Copyright, Publisher and Additional Information: Copyright (c) 2009 Elsevier Science B.V., Amsterdam. This is an author produced version of a paper published in ' Mechanical Systems and Signal Processing '. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: Cellular automata Damping Finite automata Finite element method Pattern recognition systems Structural optimization Translation (languages) Beams and plates Constrained layer damping Curved composites Curved panels Finite element analysis Local rules Material properties Modal properties Mode shapes Optimal configurations Vibrating structures Plates (structural components)
Institution: The University of Sheffield
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Mr Christopher Hardwick
Date Deposited: 24 Aug 2009 17:18
Last Modified: 08 Feb 2013 16:58
Published Version: http://dx.doi.org/10.1016/j.jsv.2008.06.023
Status: Published
Publisher: Elsevier Science B.V., Amsterdam
Refereed: Yes
Identification Number: 10.1016/j.jsv.2008.06.023
URI: http://eprints.whiterose.ac.uk/id/eprint/9209

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