Acoustic Metamaterial for Low-Frequency Sound Absorption in Urban Substations

Yi Tian; Jingkai Nie; Jinglun Chen; Linyang Zou; Junjie Qiu; Chao Fan; Xing Li; Qiang He; Weichun Huang

doi:10.1049/ema3.70036

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Acoustic Metamaterial for Low-Frequency Sound Absorption in Urban Substations

更新时间：2026-09-24

- Acoustic Metamaterial for Low-Frequency Sound Absorption in Urban Substations
- Electrical Materials and Applications Vol. 3, Issue 1, (2026)
- 作者机构：
  
  1. China Electric Power Research Institute Co. Ltd,Beijing,China
  2. Contribution: Conceptualization
  3. Contribution: Methodology
  4. Department of Materials Science and Engineering, Nanjing University,Nanjing,China
  5. Contribution: Investigation
  6. School of Electrical and Electronic Engineering, Nanyang Technological University,Singapore
  7. ,and
  8. Weichun Huang
  9. Contribution: Validation
  10. Contribution: Software
  11. Contribution: Data curation
  12. Contribution: Formal analysis
  13. Linyang Zou
- 作者简介：
- 基金信息：
- DOI：10.1049/ema3.70036
  CLC：
- Published：2026
- 稿件说明：
移动端阅览
Yi Tian, Jingkai Nie, Jinglun Chen, et al. Acoustic Metamaterial for Low-Frequency Sound Absorption in Urban Substations[J]. Electrical Materials and Applications, 2026, 3(1).
DOI：

Yi Tian, Jingkai Nie, Jinglun Chen, et al. Acoustic Metamaterial for Low-Frequency Sound Absorption in Urban Substations[J]. Electrical Materials and Applications, 2026, 3(1). DOI： 10.1049/ema3.70036.

摘要

To address the challenges of noise control in urban substations

a detailed noise characteristic analysis was conducted

identifying 100

200 and 300 Hz as the primary low-frequency noise components. To effectively absorb these frequencies

a neck-embedded honeycomb-shaped Helmholtz resonator was proposed

with its structural parameters optimised via genetic algorithms for selective sound absorption. An ultrastructured acoustic plate was then designed using array coupling between cavities and numerical analysis methods. Simulation results demonstrated that the proposed model achieved absorption coefficients exceeding 0.9 at the target frequencies. Experimental validation

conducted using impedance tube testing on a 3D-printed version of the acoustic plate

showed strong agreement with the simulation results

confirming the potential and practicality of the proposed ultrastructured material for low-frequency noise reduction in urban substations. Finally the application effect of acoustic metamaterial was testified using acoustic field simulation in a 110 kV substation.

Abstract

To address the challenges of noise control in urban substations

a detailed noise characteristic analysis was conducted

identifying 100

200 and 300 Hz as the primary low-frequency noise components. To effectively absorb these frequencies

a neck-embedded honeycomb-shaped Helmholtz resonator was proposed

conducted using impedance tube testing on a 3D-printed version of the acoustic plate

showed strong agreement with the simulation results

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