首页|基于粒子阻尼的高铁内装木地板减振降噪设计

基于粒子阻尼的高铁内装木地板减振降噪设计

扫码查看
原文链接
  • 万方数据
  • 维普
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.
Particle damping-based design for vibration and noise reduction of interior wooden flooring in high-speed railway trains
With the continuously increasing speeds of high-speed trains,the impacts of vibration and noise have become more sig-nificant.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 wood-en 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 materi-als,and particle sizes,through the calculations of energy consumption values for different particle damper configurations.This step iden-tified 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 insu-lation increase of 3.9 dB.This result successfully achieves the desired goal and substantiates the efficacy of the particle damper in reduc-ing vibration and noise in interior wooden flooring.The application of particle damping technology to address vibration and noise reduc-tion in interior wooden flooring of high-speed trains provides a novel idea for vibration and noise reduction in structures similar to the in-terior flooring of high-speed trains,which has both important engineering significance and application value.

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

汤晏宁、戴宇、肖望强、邵堃

展开 >

中车长春轨道客车股份有限公司 声学实验室,吉林长春 130062

厦门大学航空航天学院,福建厦门 361000

高铁内装木地板 粒子阻尼 离散元法 隔声性能 高速动车组

国家重点研发计划福建省科技计划项目中央高校基本科研业务费专项资金项目中国国家铁路集团有限公司科技研究开发计划

2021YFB38018032022H600320720210042P2021J035

2024

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

机车电传动
中国南车集团株洲电力机车厂

机车电传动

CSTPCD
影响因子：0.347
ISSN：1000-128X
年,卷(期)：2024.(1)
  • 18