基于试验模态的高速列车车体结构动力学模型修正研究  

Dynamic Model Correction of Car-body Structures of High-speed Trains Based on Experimental Modals

作　　者：于金朋[1,2] 张卫华[1] 黄雪飞[2] 肖守讷[1] 张立民[1] 

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：《噪声与振动控制》2015年第3期73-77,168,共6页Noise and Vibration Control

基　　金："十二五"国家科技支撑计划项目(2013BAG24B02-1)

摘　　要：精确的有限元模型对于结构动态响应预测以及动态设计至关重要。利用模态试验数据,针对高速列车结构特点与动力学特性,深入分析设计空间方法选择、修正参数选择、响应面拟合和参数修正等关键问题,运用动力修正相关理论提出适合高速列车的基于试验模态车体动力学有限元模型修正方法。并运用该方法,采用模态试验数据修正高速列车车体结构的模态分析模型,频率的计算结果与试验结果的最大误差为-0.260 9%。研究验证基于模态试验数据高速列车车体动力学有限元模型的响应面修正方法的有效性。The precise finite element model for structure dynamic response prediction and dynamic design is very important. In this paper, using the modal test data, some key issues such as design space method selection, parameters selection, response function fitting, structure and parameters optimization etc. for the finite element model, were analyzed according to the structure characteristics and dynamic characteristics of high speed trains. The response surface correction method for the dynamic model of the car-body structure of the high-speed train was proposed based on the experimental modals. Using this method and the modal test data, the modal analysis model of the car-body structure was corrected. The maximum error of the frequency between the computation results and the test results is 0.260 9 %. The effectiveness of the response surface correction method for dynamic FE model for the car-body structure of the high-speed train based on experimental modals was verified.

关 键 词：振动与波 高速列车 有限元模型 模型修正 响应面 

分 类 号：TH212[机械工程—机械制造及自动化] TH213.3