Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/7191

Title: Experimental investigation of damping flexural vibrations using two-dimensional acoustic ‘black holes’
Authors: Bowyer, E.P.
O'Boy, D.J.
Krylov, Victor V.
Gautier, F.
Issue Date: 2010
Publisher: © Katholieke Universiteit Leuven (Belgium)
Citation: BOWYER, E.P. ... et al, 2010. Experimental investigation of damping flexural vibrations using two-dimensional acoustic ‘black holes’. IN: Sas, P. and Bergen, B. (eds.). Proceedings of the International Conference on Noise and Vibration Engineering (ISMA 2010), Leuven, Belgium, 20-22 September 2010, pp.1181-1192.
Abstract: In the present paper, we report the results of the experimental investigation of damping flexural vibrations in rectangular plates containing tapered indentations (pits) of power-law profile, with the addition of a small amount of absorbing material. In the case of quadratic or higher-order profiles, such indentations materialise two-dimensional ‘black holes’ for flexural waves. In the present investigation, pits have been made in different locations of rectangular plates. It has been found that basic power-law indentations that are just protruding over the opposite surface cause rather small reduction in resonant peak amplitudes, which may be due to their relatively small absorption crossection. To increase damping in the present investigation, the absorption crossection has been enlarged by increasing the size of the central hole in the pit, while keeping the edges sharp. As expected, such pits, being in fact curved power-law wedges, result in substantially increased damping comparable with that achieved by one-dimensional wedges of powerlaw profile.
Description: This is a conference paper.
Version: Published
URI: https://dspace.lboro.ac.uk/2134/7191
Publisher Link: http://www.isma-isaac.be/past/conf/isma2010/
Appears in Collections:Conference Papers and Contributions (Aeronautical and Automotive Engineering)

Files associated with this item:

File Description SizeFormat
Bowyer_et_al_ISMA_2010[1].pdf1.27 MBAdobe PDFView/Open

 

SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.