高速磁浮车辆悬浮架动力学模型研究_赵春发.pdf

5 　5 Vol.5 　No.5 2008 10 JOURNAL OF RAILWAY SCIENCE AND ENGINEERING Oct.2008 , , (西南交通大学 牵引动力国家重点实验室, 四川成都610031) 　:针对TR08 高速磁浮车辆运行 铝合金悬浮架弹性变形较大的问题, 采用ANSYS 建立了悬浮架有限元模型, 并进行 结构模态分析;为了提高悬浮架动力学数值计算效率, 依据等效变形原则建立刚性悬浮架模型, 计算等效弹簧参数。 基于 弹性和刚性悬浮架建立磁浮车辆整车动力学模型, 对比分析了曲线通过时2 种悬浮架模型动力学响应。计算结果表明:车 辆以速度100, 250 和430 km/h 通过半径为2 260 m 的曲线时, 2 种悬浮架模型铰点垂向位移计算值之差不超过0.5 mm, 悬浮 间隙计算相对误差小于2%, 悬浮架扭转角响应曲线基本重合, 表明建立的等效刚性悬浮架模型是合理的;应用于整车动力 学性能仿真时具有足够的计算精度, 其计算效率远高于采用弹性模型时的计算效率, 但弹性悬浮架模型能更准确、全面地 模拟其弹性变形和振动响应。 :磁浮列车;悬浮架;多体动力学;有限元;弹性变形 :U270.2;U237　　　:A　　　:1672-7029(2008)05-0007-05 Dynamic model of the levitation cha i of high- peed maglev vehicle ZHAO Chun-fa, GU Xin -tao, ZHAI Wan-min (State Key Laboratory of Traction Power, Southwest Jiaoton University, Chen du 610031, China) Abstract:In order to calculate elastic deformations of the levitation chassis of TR08 ma lev vehicle, a finite element model of the levitation chassis was established usin ANSYS software, and modal analysis was carried out.The equiva- lent ri id model of the levitation chassis was also developed to improve calculation efficiency, and the equivalent sprin parameters were calculated accordin to the same deformation principle.Thus two kinds of ma lev vehicle models usin the elastic or ri id levitation chassis were developed respectively to simulate and compare their dynamic curvin re- sponse on the 2 260 m radium curve with the speed of 100, 250 and 430 km/h.The results show the vertical displace- ment differences of the joints between the ri id and elastic levitation chassis model are less than 0.5 mm, the relative calculation errors of the levitation aps are less than 2%, and time-hi