噪声与振动控制2017，Vol.37Issue(2)：13-17,100,6.DOI:10.3969/j.issn.1006-1355.2017.02.003
轴箱对轨道不平顺的响应及其可测性分析
Dynamic Response of Axle-boxes to Rail Unevenness Excitation due to Multiple Wheel-rail Interactions and Its Measurability Analysis
摘要
Abstract
Track irregularities can aggravate wheel/rail interaction and thus induce fatigue and damage of wheel/rail components and noise. This is always the key point of track maintenance. Considering the economy of maintenance work, real-time monitoring of track unevenness becomes very important. The most frequently used method of track unevenness monitoring is the double integrating of the axle-box acceleration. Unfortunately, the axle-box response is found to be influenced by various factors. To obtain a better understanding of measurement results, the dynamic behavior of the axle-box response to the unevenness excitation due to multiple wheel/rail interactions is analyzed in frequency domain with the"moving irregularity"model. Based on the analysis of the axle-box response, the measurability of track unevenness is discussed. Results show that the response of the axle-box to track unevenness at low frequencies is nearly ideal, whereas at high frequencies it is influenced by the standing waves formed among the wheels and shows a variety of uncertainty due to wave reflections. Finally, some suggestions for extending the range of measurable wavelength are proposed.关键词
振动与波/轨道不平顺/轴箱加速度/多车轮作用/驻波Key words
vibration and wave/track irregularity/axle-box acceleration/multiple wheels interaction/standing wave分类
机械制造引用本文复制引用
方格,吴天行,彭志科,王誉蓉..轴箱对轨道不平顺的响应及其可测性分析[J].噪声与振动控制,2017,37(2):13-17,100,6.基金项目
国家自然科学基金资助项目(11572188、11472170) （11572188、11472170）
