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Evolution of constrained layer damping using a cellular automaton algorithm

Chia, C.M., Rongong, J.A. and Worden, K. (2008) Evolution of constrained layer damping using a cellular automaton algorithm. Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 222 (4). pp. 585-597. ISSN 0954-4062

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Abstract

Constrained layer damping (CLD) is a highly effective passive vibration control strategy if optimized adequately. Factors controlling CLD performance are well documented for the flexural modes of beams but not for more complicated mode shapes or structures. The current paper introduces an approach that is suitable for locating CLD on any type of structure. It follows the cellular automaton (CA) principle and relies on the use of finite element models to describe the vibration properties of the structure. The ability of the algorithm to reach the best solution is demonstrated by applying it to the bending and torsion modes of a plate. Configurations that give the most weight-efficient coverage for each type of mode are first obtained by adapting the existing 'optimum length' principle used for treated beams. Next, a CA algorithm is developed, which grows CLD patches one at a time on the surface of the plate according to a simple set of rules. The effectiveness of the algorithm is then assessed by comparing the generated configurations with the known optimum ones.

Item Type: Article
Copyright, Publisher and Additional Information: © IMechE 2008. Uploaded with permission from the publisher and in accordance with the publisher's self-archiving policy.
Keywords: Cellular automat Constrained layer damping Passive vibration control Vibration damping Cellular automata Finite element method Optimization Torsional stress Vibration control Damping
Academic Units: The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield)
Depositing User: Mr Christopher Hardwick
Date Deposited: 02 Nov 2009 17:39
Last Modified: 08 Feb 2013 16:59
Published Version: http://dx.doi.org/10.1243/09544062jmes638
Status: Published
Publisher: Professional Engineering Publishing
Refereed: Yes
Identification Number: 10.1243/09544062jmes638
URI: http://eprints.whiterose.ac.uk/id/eprint/9210

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