抖振反应谱理论在列车抖振分析中的应用  

The Application of the Buffeting Response Spectrum Theory in Train Buffeting Analysis

作　　者：陈锐林[1,2] 曾庆元[3] 黄云清[2] 

机构地区：[1]湘潭大学土木工程与力学学院,湖南湘潭411105 [2]湘潭大学科学工程计算与数学仿真湖南省重点实验室,湖南湘潭411105 [3]中南大学土木建筑学院,湖南长沙410075

出　　处：《中国铁道科学》2010年第5期73-76,共4页China Railway Science

基　　金：国家自然科学基金资助项目(50078006;50678176);国家"九七三"计划项目(2007CB714706);湘潭大学博士科研启动项目(09QDZ14)

摘　　要：以随机振动理论为基础,对Scanlan基于桥梁的颤抖振分析理论加以气动导纳函数修正应用于列车抖振分析中。提出了列车抖振反应谱理论与计算方法。水平风谱引用Simiu经验公式,竖向风谱引用Panofsky-McCormick竖向风谱经验公式,气动导纳函数选用Vickery的圆柱截面和棱柱截面的近似公式,计算出了车体和转向架的一阶升沉、横移和侧滚的抖振反应谱。结果表明:随风速增大,抖振反应增长迅猛,随风速线性增大,列车抖振反应呈指数增长,该结果符合动力学特征;转向架的抖振反应比车体的抖振反应大很多,无论是升沉、横移和侧滚均大出一个数量级以上。Based on the theory of random vibration,the bridge based Scanlan′s buffeting analysis theory was corrected with aerodynamic admittance functions and was applied to train buffeting analysis.The theory and algorithm of train buffeting response spectrum were presented.The empirical formula given by Simiu was adopted to calculate the horizontal wind spectrum and the empirical formula given by Panofsky-McCormick was adopted to calculate the vertical wind spectrum.The arithmetic mean obtained by the approximate formula of the cylindrical cross-section and prism cross-section proposed by Vickery was used to calculate the aerodynamic admittance functions.One order heave,the lateral and roll buffeting response spectrum for the train body and the bogie were worked out.Results show that the buffeting response increases greatly with the increase of the wind speed.Along with the linear increase of the wind speed,the buffeting response of the train increases exponentially.The result accords with the dynamics characteristics.The buffeting response of the bogie is much bigger than that of the train body,over an order of magnitude bigger in one order heave,the lateral and roll buffeting.

关 键 词：随机振动 Scanlan颤抖振分析理论 列车抖振反应谱 列车车体 列车转向架 

分 类 号：U260.111[机械工程—车辆工程]