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Shock and Vibration
Volume 2016, Article ID 7846369, 14 pages
http://dx.doi.org/10.1155/2016/7846369
Research Article

Influence of Sandwich-Type Constrained Layer Damper Design Parameters on Damping Strength

1Tecnun-University of Navarra, Manuel Lardizabal 13, 20018 San Sebastián, Spain
2CEIT, Manuel Lardizabal 15, 20018 San Sebastián, Spain
3CEIT and Tecnun-University of Navarra, Manuel Lardizabal 15, 20018 San Sebastián, Spain
4CAF, Jose Miguel Iturrioz 26, 20200 Beasain, Spain

Received 21 August 2015; Accepted 2 February 2016

Academic Editor: Emiliano Mucchi

Copyright © 2016 Inaki Merideno et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This paper presents a theoretical study of the parameters that influence sandwich-type constrained layer damper design. Although there are different ways to reduce the noise generated by a railway wheel, most devices are based on the mechanism of increasing wheel damping. Sandwich-type constrained layer dampers can be designed so their resonance frequencies coincide with the wheel’s resonant vibration frequencies, and thus the damping effect can be concentrated within the frequency ranges of interest. However, the influence of design parameters has not yet been studied. Based on a number of numerical simulations, this paper provides recommendations for the design stages of sandwich-type constrained layer dampers.