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http://hdl.handle.net/10397/106445
Title: | Origami-inspired foldable sound barrier designs | Authors: | Yu, X Fang, H Cui, F Cheng, L Lu, Z |
Issue Date: | 3-Mar-2019 | Source: | Journal of sound and vibration, 3 Mar. 2019, v. 442, p. 514-526 | Abstract: | Conventional sound barriers are constrained by fixed geometry which results in many limitations. In this research, origami, the paper folding technique, is exploited as a platform to design deployable and reconfigurable sound barriers, as well as to actively tailor the attenuation performance. As a proof of concept, a three-dimensional barrier structure is constructed based upon Miura-ori unit cells, whose shape can be significantly altered via folding with a single degree of freedom. Folding also generates periodic corrugations on the origami sheets, which can be exploited as backing cavities to form resonant sound absorbers with a micro-perforated membrane. The absorption performance of the constructed absorber and the insertion loss of the origami barrier are investigated using both numerical and experimental tools. The proposed origami barrier involves two fundamental mechanisms: sound reflection and absorption, and the origami offers unique tunability to enrich both mechanisms owing to the folding-induced geometric evolutions. Specifically, the sound reflection effect can be effectively tuned via changing the acoustic shadow zone and the diffracted sound paths by folding, and the sound absorption effect can also be regulated by altering the depth/shape of the backing cavities during folding. Overall, the results of this research offer fundamental insights into how folding would affect the acoustic performance and open up new opportunities for designing innovative origami-inspired acoustic devices. | Keywords: | Insertion loss Micro-perforated membrane Origami structure Shape-morphing Sound barrier |
Publisher: | Elsevier Ltd | Journal: | Journal of sound and vibration | ISSN: | 0022-460X | EISSN: | 1095-8568 | DOI: | 10.1016/j.jsv.2018.11.025 | Rights: | ©2018 Elsevier Ltd. All rights reserved. ©2018 . 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 Yu, X., Fang, H., Cui, F., Cheng, L., & Lu, Z. (2019). Origami-inspired foldable sound barrier designs. Journal of Sound and Vibration, 442, 514-526 is available at https://doi.org/10.1016/j.jsv.2018.11.025. |
Appears in Collections: | Journal/Magazine Article |
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Fang_Origami-Inspired_Foldable_Sound.pdf | Pre-Published version | 1.66 MB | Adobe PDF | View/Open |
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