Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/78831
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Title: A resonant beam damper tailored with Acoustic Black Hole features for broadband vibration reduction
Authors: Zhou, T 
Cheng, L 
Issue Date: 15-Sep-2018
Source: Journal of sound and vibration, 15 Sept. 2018, v. 430, p. 174-184
Abstract: By capitalizing on the Acoustic Black Hole (ABH) phenomenon, a so-called ABH-featured Resonant Beam Damper (ABH-RBD) is proposed for the broadband vibration suppressions of a primary structure. As an add-on device to be attached to the primary structure, the proposed ABH-RBD embraces the principles of both dynamic vibration absorbers and waveguide absorbers. Its design and implementation do not need a tedious parameter tuning, thus showing robustness to accommodate structural variations in the primary structure. Using a beam as a benchmark, both numerical simulations and experiments show that multiple resonances of the primary structure can be significantly reduced by the proposed ABH-RBD, and the same ABH-RBD is effective on different primary systems. Typical control effects and the underlying mechanisms are investigated. Analyses reveal the existence of three types of vibration reduction mechanisms, manifested differently and dominated by different physical process, i.e. structural interaction, damping enhancement and their combination. Comparisons with a conventional uniform beam absorber show that the superiority of the proposed ABH-RBD is attributed to its ABH-specific features exemplified by the enriched system dynamics and the enhanced broadband damping.
Keywords: Acoustic black hole
Dynamic vibration absorber
Resonant beam damper
Waveguide absorber
Publisher: Academic Press
Journal: Journal of sound and vibration 
ISSN: 0022-460X
EISSN: 1095-8568
DOI: 10.1016/j.jsv.2018.05.047
Rights: © 2018 Elsevier Ltd. All rights reserved.
© 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/.
The following publication Zhou, T., & Cheng, L. (2018). A resonant beam damper tailored with acoustic black hole features for broadband vibration reduction. Journal of Sound and Vibration, 430, 174-184 is available at https://doi.org/10.1016/j.jsv.2018.05.047.
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