Academic Journal
Design of ultra-thin broadband sound-absorbing metamaterials based on Helmholtz resonators.
| Τίτλος: | Design of ultra-thin broadband sound-absorbing metamaterials based on Helmholtz resonators. |
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| Συγγραφείς: | Yang, Xiaotong, Zhao, Caiyou, Liu, Rui, Zhang, Xinhao, Wang, Liuchong, Wang, Ping |
| Πηγή: | Journal of Applied Physics; 7/21/2026, Vol. 140 Issue 3, p1-12, 12p |
| Θεματικοί όροι: | Metamaterials, Helmholtz resonators, Acoustical engineering, Absorption of sound, Numerical analysis |
| Περίληψη: | Achieving efficient low-frequency sound absorption within limited thickness remains a persistent challenge in acoustic engineering. In this work, an ultra-thin broadband absorber is developed by exploiting the weak coupling interaction among Helmholtz resonant units. Instead of relying on bulky cavity enlargement, the proposed design establishes a gradient distribution of resonant frequencies through deliberate modulation of geometric parameters, enabling broadband performance via spatially compact arrangements. Numerical simulations reveal that the two configurations exhibit high absorption efficiency (sound absorption coefficient > 0.8) over 480–1023 and 300–500 Hz, respectively. Despite their compact geometries, the overall thicknesses are restricted to 32 and 42 mm, corresponding to only 1/10.6 and 1/27 of the minimum operating wavelengths. To verify the predictive model, impedance tube measurements were carried out independently for both structures. The experimental results closely follow the simulated trends, confirming the reliability of the analytical and numerical framework. The proposed designs, therefore, demonstrate effective subwavelength absorption capability across targeted mid-low and low-frequency ranges. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Βάση Δεδομένων: | Complementary Index |
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| Items | – Name: Title Label: Title Group: Ti Data: Design of ultra-thin broadband sound-absorbing metamaterials based on Helmholtz resonators. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Yang%2C+Xiaotong%22">Yang, Xiaotong</searchLink><br /><searchLink fieldCode="AR" term="%22Zhao%2C+Caiyou%22">Zhao, Caiyou</searchLink><br /><searchLink fieldCode="AR" term="%22Liu%2C+Rui%22">Liu, Rui</searchLink><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xinhao%22">Zhang, Xinhao</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Liuchong%22">Wang, Liuchong</searchLink><br /><searchLink fieldCode="AR" term="%22Wang%2C+Ping%22">Wang, Ping</searchLink> – Name: TitleSource Label: Source Group: Src Data: Journal of Applied Physics; 7/21/2026, Vol. 140 Issue 3, p1-12, 12p – Name: Subject Label: Subject Terms Group: Su Data: <searchLink fieldCode="DE" term="%22Metamaterials%22">Metamaterials</searchLink><br /><searchLink fieldCode="DE" term="%22Helmholtz+resonators%22">Helmholtz resonators</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustical+engineering%22">Acoustical engineering</searchLink><br /><searchLink fieldCode="DE" term="%22Absorption+of+sound%22">Absorption of sound</searchLink><br /><searchLink fieldCode="DE" term="%22Numerical+analysis%22">Numerical analysis</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Achieving efficient low-frequency sound absorption within limited thickness remains a persistent challenge in acoustic engineering. In this work, an ultra-thin broadband absorber is developed by exploiting the weak coupling interaction among Helmholtz resonant units. Instead of relying on bulky cavity enlargement, the proposed design establishes a gradient distribution of resonant frequencies through deliberate modulation of geometric parameters, enabling broadband performance via spatially compact arrangements. Numerical simulations reveal that the two configurations exhibit high absorption efficiency (sound absorption coefficient > 0.8) over 480–1023 and 300–500 Hz, respectively. Despite their compact geometries, the overall thicknesses are restricted to 32 and 42 mm, corresponding to only 1/10.6 and 1/27 of the minimum operating wavelengths. To verify the predictive model, impedance tube measurements were carried out independently for both structures. The experimental results closely follow the simulated trends, confirming the reliability of the analytical and numerical framework. The proposed designs, therefore, demonstrate effective subwavelength absorption capability across targeted mid-low and low-frequency ranges. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Group: Ab Data: <i>Copyright of Journal of Applied Physics is the property of American Institute of Physics and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1063/5.0343333 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 1 Subjects: – SubjectFull: Metamaterials Type: general – SubjectFull: Helmholtz resonators Type: general – SubjectFull: Acoustical engineering Type: general – SubjectFull: Absorption of sound Type: general – SubjectFull: Numerical analysis Type: general Titles: – TitleFull: Design of ultra-thin broadband sound-absorbing metamaterials based on Helmholtz resonators. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Yang, Xiaotong – PersonEntity: Name: NameFull: Zhao, Caiyou – PersonEntity: Name: NameFull: Liu, Rui – PersonEntity: Name: NameFull: Zhang, Xinhao – PersonEntity: Name: NameFull: Wang, Liuchong – PersonEntity: Name: NameFull: Wang, Ping IsPartOfRelationships: – BibEntity: Dates: – D: 21 M: 07 Text: 7/21/2026 Type: published Y: 2026 Identifiers: – Type: issn-print Value: 00218979 Numbering: – Type: volume Value: 140 – Type: issue Value: 3 Titles: – TitleFull: Journal of Applied Physics Type: main |
| ResultId | 1 |