中低速磁浮列车悬浮架纵梁结构优化  

Structural optimization of the levitation bogie longitudinal beam of a med-low speed maglev train

作　　者：张明康[1,2] 肖乾 雷成[2] 石小牒 王爱彬 符远航 ZHANG Mingkang;XIAO Qian;LEI Cheng;SHI Xiaodie;WANG Aibin;FU Yuanhang(Key Laboratory of Railway Industry on Intelligent Operation and Maintenance for Locomotive and Vehicle,East China Jiaotong University,Nanchang 330013,China;Henan Engineering Research Center of Rail Transit Intelligent Security,Zhengzhou 451460,China;CRRC Changchun Railway Vehicles Co.,Ltd.,Changchun 130062,China)

机构地区：[1]华东交通大学机车车辆智能运维铁路行业重点实验室,南昌330013 [2]河南省轨道交通智能安全工程技术研究中心,郑州451460 [3]中车长春轨道客车股份有限公司,长春130062

出　　处：《振动与冲击》2024年第14期180-188,共9页Journal of Vibration and Shock

基　　金：国家自然科学基金(52065022);河南省科技攻关计划(232102240094)。

摘　　要：为得到具有理想承载性能同时又满足轻量化设计要求的中低速磁浮列车悬浮架结构,利用有限元软件建立悬浮架有限元模型,对悬浮架关键工况进行计算分析并结合强度试验验证有限元模型的可靠性。选取悬浮架纵梁为研究对象,分别基于多项式响应面法、Kriging法构造目标参数关于设计变量的代理模型,并对三种代理模型精度进行比较,得到目标参数随设计变量的最优代理模型,利用多目标优化算法进行计算寻优,得到代理模型的最优解集并通过仿真计算对最优结果进行验证。研究结果表明:Kriging法响应面模型的拟合精度高于多项式的二次和线性响应面模型;优化后悬浮架纵梁结构相比于原设计方案在满足强度可靠性要求的前提下,纵梁结构质量降低了16.9%。To optimize the levitation bogie structure of a med-low speed maglev vehicle for obtaining ideal bearing capacity and meeting the lightweight design requirements,the finite element model of the levitation bogie was established by using a finite element software.Under key working conditions,the levitation bogie structure was numerically analyzed,and the reliability of the finite element model was verified by a strength test.The longitudinal beam of the levitation bogie was selected as the analisis object,and the surrogate models of the target parameters with respect to the design variables were constructed based on the polynomial response surface method and Kriging method respectively.Three surrogate models were compared to obtain the optimal one.The optimal solution set of the surrogate model was obtained by using a multi-objective optimization algorithm,and the optimal results were verified by the numerical simulation of examples.The results indicate that the fitting accuracy of the Kriging response surface model is higher than that of the polynomial linear and quadratic response surface model.Compared to the original design scheme,the optimized levitation bogie frame structure reduces the mass of the longitudinal beam structure by 16.9%under the premise of meeting the strength and reliability requirements.

关 键 词：悬浮架 试验 代理模型 结构优化 有限元仿真 

分 类 号：U237[交通运输工程—道路与铁道工程]