列车轮对横向摇摆力的工程概率数值分析  

The Engillcering Probabilify Numerical Analysis of the Train Lateral Swing Force

作　　者：朱汉华 

出　　处：《长沙铁道学院学报》1994年第3期24-28,共5页Journal of Changsha Railway University

摘　　要：在列车一桥梁时变系统振动响应的概率分析中，发现列车轮对横向摇摆力等频率密度分布具有多个波峰，很难用经典概率密度曲线拟合．本文从工程应用的要求着眼，作概率数值分析来解决多峰分布问题，即用富里哀级数拟合之，提出了用富里哀级数表示的概率密度分布函数及截尾误差算式，分析了一些多峰分布问题，发现相当简使并具有良好精度，确能满足工程问题需要．it is found that in the probability density distribution oftrain lateral swing force there are multi-wave crests in making the probability analysis if the train-bridge systeon vibration response, which is he.rd to imitate by de.ssical probability density curve. In view of the demand of engineering application, this paper suggests multitudinous distribution problem be solved by probability numerical analysis, that is, itis imitated by Fourier Series. It is proposed that the probability density distribution function and cut-off error algorithmbe expressed in the form of Fourier Series. Some multitudin.O. us distribution problems are analysed, and we find that thismethod is very simple and convenient and bas high precision and satisfies the needs of engineering Problem

关 键 词：数值分析 轮对 列车 摇摆力 

分 类 号：U260.331.1[机械工程—车辆工程]