列车车体结构一阶垂向振动参数研究  

Research of First Order Vertical Parameter for Car-body Structure

作　　者：王长科[1] 阳光武[1] 朱涛[1] 于金朋[2] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031 [2]唐山轨道客车有限责任公司,河北唐山064000

出　　处：《机械科学与技术》2016年第8期1259-1266,共8页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家科技支撑计划项目(2015BAG12B01-15);四川省科技厅应用基础研究项目(2014JY0242);中央高校基本科研业务费专项资金项目(2682015CX046)资助

摘　　要：基于欧拉-伯努利梁理论,建立了等效车体结构垂向参数的计算参数化模型。为了更精确地计算出车体结构的一阶垂向振动弯曲频率,根据车体截面的不同,将其分成若干段,获取分段的截面信息;基于分段的不平均程度推导出了具有收敛系数的车体一阶垂向弯曲频率修正公式,大大提高了车体的一阶垂向振动弯曲频率解析计算精度。分别以某型地铁车和高速列车车体结构的一阶垂向振动弯曲频率计算为例,对公式的关键参数进行了分析与应用,计算结果表明:公式解析解与有限元解之间的误差分布为2.05%和4.59%,且高速车与其模态实验结果相差1.18 Hz,证明了车体一阶垂向振动弯曲频率修正公式的有效性。Interms of the Euler-Bernoulli beam theory,the parametric model for vertical vibration of equivalent carbody structure is built. For more accurate calculation results,the car-body is divided into some parts for getting the section information and obtaining a convergence coefficient to get the corrected formula by the degree of inequality about the car-body parts. All of these measures give an exact first order vertical bending frequency of the simple carbodies. By applying the key parameters to calculate the first order vertical bending frequency of a subway car-body and a high-speed train car-body,the results show that the error between the analyzed value and the finite element result is 2.05% and 4.59%,and the error about the modal experiment of the high-speed train is 1.18 Hz. All the errors between the analyzed value and the finite element result are all in the range of 5%,which show that the analyzed method is effective.

关 键 词：欧拉-伯努利梁 列车车体 垂向弯曲频率 解析算法 

分 类 号：U270.1[机械工程—车辆工程]