动车组外车门粒子阻尼器减振隔声研究
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1.中车长春轨道客车股份有限公司声学实验室 吉林长春;2.厦门大学航空航天学院 福建厦门

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U266,X593

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中国国家铁路集团有限公司科技研究开发计划课题(P2021J035);国家重点研发计划(2021YFB3801803);福建省科技计划项目(2022H6003);中央高校基本科研业务费专项资金(20720210042)


Study on the Vibration Damping and Sound Insulation of Particle Dampers for the Outer Doors of Moving Train Sets
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Acoustic Laboratory of CRRC Changchun Train Transit Co., Ltd

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    摘要:

    动车组在高速运行时,由于外界气流路面激励等因素,外车门会产生巨大的振动与噪声,其直接影响动车乘坐的稳定性以及列车运行的安全性。针对外车门背板薄壁结构在前五阶模态频率处振动巨大的现象,将粒子阻尼应用于外车门振动噪声抑制。首先通过建立外车门粒子阻尼器的离散元模型,基于该模型仿真分析不同阻尼器填充参数下系统耗能;接着基于仿真结果对阻尼器填充参数进行优化设计,并通过实验分析了各填充材质下的隔声量。实验结果显示,在安装粒子阻尼器后隔声量达到5.33dB,较大程度优化了外车门的辐射噪声,该结果也证明了将粒子阻尼技术应用于动车组外车门振动噪声抑制的有效性。

    Abstract:

    When a train set is running at high speed, due to the external airflow road surface excitation and other factors, the outer door will produce huge vibration and noise, which directly affects the stability of the train ride and the safety of the train operation. For the phenomenon that the thin-walled structure of the back plate of the outer door vibrates greatly at the first five modal frequencies, particle damping is applied to the outer door vibration and noise suppression. Firstly, a discrete element model of the outer door particle damper is established, based on which the energy consumption of the system is analyzed by simulation under different damper filling parameters; then, the optimized design of the damper filling parameters is carried out based on the simulation results, and the sound insulation under each filling material is analyzed by experiments. The experimental results show that the sound insulation reaches 5.33dB after the installation of particle dampers, which optimizes the radiated noise of the outer doors to a larger extent, and the results also demonstrate the effectiveness of using the particle damping technique for the vibration noise suppression of the outer door of a moving train set.

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引用本文

刘浩楠,戴宇,肖望强. 动车组外车门粒子阻尼器减振隔声研究[J]. 科学技术与工程, , ():

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  • 收稿日期:2024-05-09
  • 最后修改日期:2024-06-17
  • 录用日期:2024-07-09
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