Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106411
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Wang, Y | en_US |
dc.creator | Du, J | en_US |
dc.creator | Cheng, L | en_US |
dc.date.accessioned | 2024-05-09T00:53:19Z | - |
dc.date.available | 2024-05-09T00:53:19Z | - |
dc.identifier.uri | http://hdl.handle.net/10397/106411 | - |
dc.language.iso | en | en_US |
dc.publisher | Academic Press | en_US |
dc.rights | © 2019 Published by Elsevier Ltd. | en_US |
dc.rights | © 2019. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/ | en_US |
dc.rights | The following publication Wang, Y., Du, J., & Cheng, L. (2019). Power flow and structural intensity analyses of Acoustic Black Hole beams. Mechanical Systems and Signal Processing, 131, 538-553 is available at https://doi.org/10.1016/j.ymssp.2019.06.004. | en_US |
dc.subject | ABH beam | en_US |
dc.subject | Fourier series | en_US |
dc.subject | Power flow | en_US |
dc.subject | Structural intensity | en_US |
dc.title | Power flow and structural intensity analyses of Acoustic Black Hole beams | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.spage | 538 | en_US |
dc.identifier.epage | 553 | en_US |
dc.identifier.volume | 131 | en_US |
dc.identifier.doi | 10.1016/j.ymssp.2019.06.004 | en_US |
dcterms.abstract | A truthful description of the energy transport process is vital for the understanding of the Acoustic Black Hole (ABH) effect and its applications. One of the parameters, which can depict such a physical process is the power flow, whose calculation involves higher-order derivatives of the structural displacement function. This however requires an accurate and sufficiently smooth fitting of the structural responses which can hardly be achieved by the existing semi-analytical models on ABH structures. To tackle the problem, an energy formulation, in conjunction with a Rayleigh-Ritz procedure, is proposed for an ABH beam, whose thickness variation is described as a general Fourier expansion. The transverse displacement of the beam is constructed using Fourier series with supplementary auxiliary functions. This treatment ensures the continuity and the smoothness of all relevant derivatives terms in the entire calculation domain, thus allowing the calculation of the power flow and structural intensity. Numerical examples are presented to illustrate the reliability and the effectiveness of the established model. Numerical analyses on power flow and structural intensity show the spatial and frequency characteristics of the energy transmission process and reveal the ABH-specific mechanisms. While providing an efficient analysis tool, this work enriches the existing understanding on the dynamic behavior of ABH structures. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Mechanical systems and signal processing, 15 Sept 2019, v. 131, p. 538-553 | en_US |
dcterms.isPartOf | Mechanical systems and signal processing | en_US |
dcterms.issued | 2019-09-15 | - |
dc.identifier.scopus | 2-s2.0-85066995773 | - |
dc.identifier.eissn | 0888-3270 | en_US |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0397 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Fok Ying Tung Education Foundation; National Science Foundation of China | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 14459817 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Cheng_Power_Flow_Structural.pdf | Pre-Published version | 1.36 MB | Adobe PDF | View/Open |
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