Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106362
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Zhou, T | en_US |
dc.creator | Chazot, JD | en_US |
dc.creator | Perrey-Debain, E | en_US |
dc.creator | Cheng, L | en_US |
dc.date.accessioned | 2024-05-09T00:53:00Z | - |
dc.date.available | 2024-05-09T00:53:00Z | - |
dc.identifier.uri | http://hdl.handle.net/10397/106362 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Ltd | en_US |
dc.rights | ©2020 Elsevier Ltd. All rights reserved. | en_US |
dc.rights | ©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/ | en_US |
dc.rights | The following publication Zhou, T., Chazot, J. D., Perrey-Debain, E., & Cheng, L. (2020). Partition of Unity Finite Element Method for the modelling of Acoustic Black Hole wedges. Journal of Sound and Vibration, 475, Article 115266 is available at https://doi.org/10.1016/j.jsv.2020.115266. | en_US |
dc.subject | Acoustic Black Hole | en_US |
dc.subject | Partition of Unity Finite Element Method | en_US |
dc.subject | Wavelet | en_US |
dc.subject | WKB method | en_US |
dc.title | Partition of Unity Finite Element Method for the modelling of Acoustic Black Hole wedges | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 475 | en_US |
dc.identifier.doi | 10.1016/j.jsv.2020.115266 | en_US |
dcterms.abstract | The Acoustic Black Hole (ABH) phenomenon can be exploited to manipulate and mitigate flexural wave propagation in thin-walled structures. ABH structures feature unique space-dependent wavenumber variation and wave celerity reduction in the tapered ABH area, thus posing challenges to the existing modelling techniques. In this work, the Partition of Unity Finite Element Method (PUFEM) is revamped to simulate the structural response of an ABH wedge subject to a harmonic loading. This method allows the incorporation of auxiliary enrichment functions into the finite element framework in order to cope with the ABH-induced wave oscillating behaviour, exemplified by the varying wavenumber and amplitude in space. The PUFEM tapered Timoshenko beam elements are constructed by employing wave enrichment functions with the Wentzel-Kramers-Brillouin (WKB) approximation method. A wavelet enrichment is also investigated as hierarchic refinement. Using these enriched elements, the frequency responses of an ABH wedge and the convergence of numerical solutions are computed and compared with the classical linear FEM and the elements enriched with ‘local’ wave solutions. An adaptive meshing scheme is designed and implemented to further accelerate the solution convergence. It is shown that the PUFEM offers a good computational accuracy and drastic reduction of degrees of freedom for solving the broadband ABH problems, outperforming the classical FEM. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Journal of sound and vibration, 9 June 2020, v. 475, 115266 | en_US |
dcterms.isPartOf | Journal of sound and vibration | en_US |
dcterms.issued | 2020-06-09 | - |
dc.identifier.scopus | 2-s2.0-85080954761 | - |
dc.identifier.eissn | 0022-460X | en_US |
dc.identifier.artn | 115266 | en_US |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0248 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Science Foundation of China | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 20535434 | - |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
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Zhou_Partition_Unity_Finite.pdf | Pre-Published version | 1.5 MB | Adobe PDF | View/Open |
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