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Power capture characteristics of rail-double acoustic black hole piezoelectric beam based on Gaussian expansion method
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Zhou YANG1, 2, Qingsong FENG1, Jie DENG3, Ling ZHANG1, Hui HE2
Journal of Vibration Engineering | 2025, 38(5) : 1002 - 1015
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Journal of Vibration Engineering | 2025, 38(5): 1002-1015
Power capture characteristics of rail-double acoustic black hole piezoelectric beam based on Gaussian expansion method
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Zhou YANG1, 2, Qingsong FENG1, Jie DENG3, Ling ZHANG1, Hui HE2
Affiliations
  • 1.State Key Laboratory of Safety and Resilience of Civil Engineering in Mountain Area，East China Jiaotong University，Nanchang 330013，China
  • 2.School of Civil and Architectural Engineering，Hunan Institute of Technology， Hengyang 421002，China
  • 3.Key Laboratory of Ocean Acoustic and Sensing，Northwestern Polytechnical University，Xi’ an 710129，China
Published: 2025-05-10 doi: 10.16385/j.cnki.issn.1004-4523.2025.05.012
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The acoustic black hole (ABH) effect, which decelerates the propagation of elastic waves and suppresses boundary reflections, presents a novel mechanism for vibration energy harvesting. A dual-ABH piezoelectric beam energy harvester has been designed for application in railway track systems. A semi-analytical electromechanical coupling model was developed using the energy functional variational principle and Gaussian expansion method. Validation was conducted through finite element simulations. Under train-induced loading, energy harvesting behavior was investigated with respect to ABH geometric parameters and terminal mass. Four principal energy harvesting bands were identified within the 0~1500 Hz range, yielding a peak output voltage of 4.83 V and a maximum efficiency of 2.23%. Optimal energy conversion was achieved when the piezoelectric patch length equaled half the bending wave wavelength of the host structure. Efficiency was further improved by strengthening the ABH effect or through appropriate tuning of the terminal mass.

energy harvesting  /  Gaussian expansion method  /  railway tracks  /  double acoustic black hole piezoelectric beam  /  dynamic wheel-rail force
Zhou YANG, Qingsong FENG, Jie DENG, Ling ZHANG, Hui HE. Power capture characteristics of rail-double acoustic black hole piezoelectric beam based on Gaussian expansion method[J]. Journal of Vibration Engineering, 2025 , 38 (5) : 1002 -1015 . DOI: 10.16385/j.cnki.issn.1004-4523.2025.05.012
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Year 2025 volume 38 Issue 5
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2025.05.012
  • Receive Date：2023-05-15
  • Online Date：2026-02-12
  • Published：2025-05-10
Article Data
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History
  • Received：2023-05-15
  • Revised：2023-07-21
Funding
Affiliations
    1.State Key Laboratory of Safety and Resilience of Civil Engineering in Mountain Area，East China Jiaotong University，Nanchang 330013，China
    2.School of Civil and Architectural Engineering，Hunan Institute of Technology， Hengyang 421002，China
    3.Key Laboratory of Ocean Acoustic and Sensing，Northwestern Polytechnical University，Xi’ an 710129，China
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https://castjournals.cast.org.cn/joweb/zdgcxb/EN/10.16385/j.cnki.issn.1004-4523.2025.05.012
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Number of
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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