Particle damping-based design for vibration and noise reduction of interior wooden flooring in high-speed railway trains

TANG Yanning; DAI Yu; XIAO Wangqiang; SHAO Kun

doi:10.13890/j.issn.1000-128X.2024.01.127

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Particle damping-based design for vibration and noise reduction of interior wooden flooring in high-speed railway trains

Railway Rolling Stock | 更新时间：2024-08-02

- Particle damping-based design for vibration and noise reduction of interior wooden flooring in high-speed railway trains
- Electric Drive for Locomotives Issue 1, Pages: 85-92(2024)
- 作者机构：
  
  1.中车长春轨道客车股份有限公司声学实验室，吉林长春　130062
  2.厦门大学航空航天学院，福建厦门 361000
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2024.01.127
  CLC： U292.91⁺4;U270.1⁺6
- Published：10 January 2024，
  
  Received：28 September 2023，
  
  Revised：12 December 2023，
- 稿件说明：
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汤晏宁, 戴宇, 肖望强, 等. 基于粒子阻尼的高铁内装木地板减振降噪设计[J]. 机车电传动, 2024(1): 85-92.

TANG Yanning, DAI Yu, XIAO Wangqiang, et al. Particle damping-based vibration and noise reduction design for high speed rail interior wooden flooring[J]. Electric drive for locomotives,2024(1): 85-92.
汤晏宁, 戴宇, 肖望强, 等. 基于粒子阻尼的高铁内装木地板减振降噪设计[J]. 机车电传动, 2024(1): 85-92. DOI：10.13890/j.issn.1000-128X.2024.01.127.

TANG Yanning, DAI Yu, XIAO Wangqiang, et al. Particle damping-based vibration and noise reduction design for high speed rail interior wooden flooring[J]. Electric drive for locomotives,2024(1): 85-92. DOI：10.13890/j.issn.1000-128X.2024.01.127.

摘要

随着高铁速度的不断提升，振动噪声问题越来越显著，这对高铁内装木地板的隔声性能和轻量化提出了更高的要求。文章对某尺寸内装木地板进行隔声性能研究，首先基于离散元法，对内装木地板粒子阻尼器的外观和结构进行设计，以满足安装要求；然后，通过统计不同粒子阻尼器配置下的耗能值，研究不同安装区域、不同粒子材质和不同粒子粒径对于内装木地板隔声效果的影响，从而得到最优配置方案；最后，通过隔声试验进行验证。试验数据表明，不同粒子阻尼器配置方案的隔声性能与离散元仿真结果一致，证明了离散元模型的有效性，并且最优粒子阻尼器配置方案的各频段隔声量提升明显，计权隔声量提升了3.9 dB，完全符合预期目标，证明了粒子阻尼器对于内装木地板减振降噪的有效性。通过将粒子阻尼技术应用于高速动车组内装木地板的减振降噪中，为高速动车组内装地板等结构的减振降噪提供了新的思路，具有重要的工程意义和应用价值。

Abstract

With the continuously increasing speeds of high-speed trains

the impacts of vibration and noise have become more significant. Consequently

there is an escalating demand for enhanced sound insulation performance and lighter design of interior wooden flooring in high-speed trains. This paper presented a design aimed at improving the sound insulation performance of interior wooden flooring with specific sizes. The design process initially involved the appearance and structure of particle dampers for the interior wooden flooring. The approach utilized the discrete element method to meet the installation requirements. Subsequently

an investigation was conducted into the sound insulation effects of various factors on the interior wooden flooring

including installation areas

particle materials

and particle sizes

through the calculations of energy consumption values for different particle damper configurations. This step identified an optimal configuration option. Finally

sound insulation tests were conducted to verify the effectiveness of the chosen option. The experimental data show the consistency between the sound insulation performance under different particle damper configurations and the discrete element simulation results

thereby demonstrating the effectiveness of the discrete element model. Moreover

the optimal particle damper configuration yields a significant improvement in sound insulation across all frequency bands

resulting in a weighted sound insulation increase of 3.9 dB. This result successfully achieves the desired goal and substantiates the efficacy of the particle damper in reducing vibration and noise in interior wooden flooring. The application of particle damping technology to address vibration and noise reduction in interior wooden flooring of high-speed trains provides a novel idea for vibration and noise reduction in structures similar to the interior flooring of high-speed trains

which has both important engineering significance and application value.

关键词

高铁内装木地板粒子阻尼离散元法隔声性能高速动车组

Keywords

interior wooden flooring in high-speed trainparticle dampingdiscrete element methodsound insulation performancehigh-speed EMUs

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