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Vibration Damping and Sound Insulation of Particle Dampers for the Outer Doors of Moving Train Sets
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Hao-nan LIU1, Yu DAI2, Wang-qiang XIAO2, *
Science Technology and Engineering | 2025, 25(2) : 788 - 794
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Science Technology and Engineering | 2025, 25(2): 788-794
• Papers·Traffics and Transportations •
Vibration Damping and Sound Insulation of Particle Dampers for the Outer Doors of Moving Train Sets
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Hao-nan LIU1, Yu DAI2, Wang-qiang XIAO2, *
Affiliations
  • 1 CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062, China
  • 2 School of Aerospace Engineering, Xiamen University, Xiamen 361000, China
Published: 2025-01-18 doi: 10.12404/j.issn.1671-1815.2403424
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When a train set operates at high speeds, significant vibration and noise are generated in the outer door due to external airflow and road surface excitation, which directly impacts ride stability and train operation safety. To address the significant vibration of the thin-walled backplate structure of the outer door at the first five modal frequencies, particle damping was applied to mitigate vibration and noise. Firstly, a discrete element model of the particle damper for the outer door was established to analyze system energy consumption through simulations under various filler parameters. Based on these simulation results, an optimized design of the filler parameters was conducted, and experiments were performed to assess sound insulation with each filler material. The results show that the installation of particle dampers achieves a sound insulation improvement of 5.33 dB, significantly optimizing the radiated noise from the outer doors. These findings demonstrate the effectiveness of particle damping for vibration and noise reduction in the outer door of a moving train set.

outer doors of rolling stock  /  discrete element modeling of outer door particle dampers  /  vibration noise suppression
Hao-nan LIU, Yu DAI, Wang-qiang XIAO. Vibration Damping and Sound Insulation of Particle Dampers for the Outer Doors of Moving Train Sets[J]. Science Technology and Engineering, 2025 , 25 (2) : 788 -794 . DOI: 10.12404/j.issn.1671-1815.2403424
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Year 2025 volume 25 Issue 2
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Article Info
doi: 10.12404/j.issn.1671-1815.2403424
  • Receive Date：2024-05-09
  • Online Date：2025-12-05
  • Published：2025-01-18
Article Data
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History
  • Received：2024-05-09
  • Revised：2024-11-07
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Affiliations
    1 CRRC Changchun Railway Vehicles Co., Ltd., Changchun 130062, China
    2 School of Aerospace Engineering, Xiamen University, Xiamen 361000, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
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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