车轮扁疤激起的轮轨冲击噪声机理分析

杨新文;翟婉明

振动与冲击 ›› 2009, Vol. 28 ›› Issue (8) : 46-49.

PDF(1841 KB)
PDF(1841 KB)
振动与冲击 ›› 2009, Vol. 28 ›› Issue (8) : 46-49.
论文

车轮扁疤激起的轮轨冲击噪声机理分析

  • 杨新文1,2,翟婉明1
作者信息 +

WHEEL/RAIL IMPACT NOISE DUE TO EXCITATION BY RAILWAY WHEEL FLATS

  • YANG Xin-wen,ZHAI Wan-ming
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文章历史 +

摘要

摘 要 为了预测和控制快速和准高速线路上车轮扁疤激起的轮轨冲击噪声,应用车辆-轨道耦合动力学理论和声辐射理论,建立了基于车辆-轨道相互作用的轮轨冲击噪声预测模型,编制轮轨噪声仿真软件TTINSIM计算分析了车轮扁疤激扰下轮轨冲击噪声的特性。结果表明:(1)车轮扁疤是造成轮轨冲击噪声的重要源泉;(2)车轮扁疤引起的冲击噪声主要集中在250Hz以上频段;(3)车轮扁疤引起的轮轨冲击噪声跟扁疤长度、扁疤个数以及列车运行速度有很大的关系;(4)车轮新扁疤比旧扁疤激起的轮轨冲击噪声大2~3dB(A)。

Abstract

Abstract: In order to predict and control wheel/rail impact noise due to wheel flats in fast speed and semi-high speed railway, a model which could simulate wheel/rail impact noise is set up based on the vehicle-track coupled dynamics theory and the sound radiation theory. The acoustics performances of wheel/rail impact noise due to railway wheel flats had been studied with wheel/rail noise simulation software TTINSIM. The results demonstrated that railway wheel flats which cause wheel/rail impact noise are important sources. Wheel/rail impact noise due to wheel flats are focused mainly in frequency domains upon 250Hz. Impact noises due to wheel flats is related to length and quantity of wheel flats and the train speed. The differences of impact noises due to new flats and old flats are 2~3dB(A).

关键词

车辆-轨道耦合动力学 / 车轮扁疤 / 轮轨噪声 / 冲击噪声

Key words

the vehicle-track coupled dynamics / railway wheel flats / wheel/rail noise / impact noise

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杨新文;翟婉明. 车轮扁疤激起的轮轨冲击噪声机理分析 [J]. 振动与冲击, 2009, 28(8): 46-49
YANG Xin-wen;ZHAI Wan-ming. WHEEL/RAIL IMPACT NOISE DUE TO EXCITATION BY RAILWAY WHEEL FLATS [J]. Journal of Vibration and Shock, 2009, 28(8): 46-49

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