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http://hdl.handle.net/10397/106365
Title: | Numerical and experimental benchmark solutions on vibration and sound radiation of an Acoustic Black Hole plate | Authors: | Ma, L Cheng, L |
Issue Date: | Jun-2020 | Source: | Applied acoustics, June 2020, v. 163, 107223 | Abstract: | Acoustic Black Hole (ABH) has been attracting the ever-increasing attention from the scientific community as a passive, effective and lightweight solution for vibration and noise mitigations of vibrating structures. Most existing work, however, relies on numerical simulations using Finite Element models, except a few cases where alternative methods are attempted. In general, there is a lack of well-calibrated experimental benchmark solutions for model validations and phenomena assertions, especially in 2D cases where precise fabrication of ABH indentations with well-controlled thickness profile is a challenge. In this paper, a rectangular plate embodied with a symmetric circular ABH indentation is meticulously manufactured and experimentally tested in terms of eigen-frequencies, mode shapes, forced vibration response and radiated sound power in a baffled half-space. These results offer useful benchmark solutions for future ABH studies. In particular, experimental results show a high consistency with the ones predicted by the previously developed 2D Daubechies wavelet (DW) model. | Keywords: | Acoustic Black Hole (ABH) Benchmark solutions Daubechies wavelet (DW) model Vibration and noise control |
Publisher: | Elsevier Ltd | Journal: | Applied acoustics | ISSN: | 0003-682X | EISSN: | 1872-910X | DOI: | 10.1016/j.apacoust.2020.107223 | Rights: | © 2020 Elsevier Ltd. All rights reserved. © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ The following publication Ma, L., & Cheng, L. (2020). Numerical and experimental benchmark solutions on vibration and sound radiation of an Acoustic Black Hole plate. Applied Acoustics, 163, Article 107223 is available at https://doi.org/10.1016/j.apacoust.2020.107223. |
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Ma_Numerical_Experimental_Benchmark.pdf | Pre-Published version | 2.65 MB | Adobe PDF | View/Open |
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