两型高速动车组减振器载荷特性对比  

Comparison of damper loads characteristics between two types of high-speed EMUs

作　　者：任君临 李强[1] 任尊松[1] 曹杰 REN Junlin;LI Qiang;REN Zunsong;CAO Jie(School of Mechanical,Electrical&Control Engineering,Beijing Jiaotong University,Beijing 100044,China)

机构地区：[1]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《北京交通大学学报》2023年第4期162-170,共9页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

基　　金：国家自然科学基金(11790281)。

摘　　要：在两型CR400复兴号高速动车组的一系垂向减振器、抗蛇行减振器和二系横向减振器上布置测力应变计,对两型高速动车组在京沪高速铁路上测试获得的减振器载荷信号进行了分析.通过数据处理和分析,给出了两型动车组三类减振器的载荷时间历程、频域幅值和载荷谱,分析了两型动车组对应减振器载荷的时域和频域特点.采用车辆系统动力学模型和数值方法,获得了轨道随机激励下这两种高速动车组的三类减振器载荷,再现了两型动车组减振器载荷的差异性.研究结果表明:在整个测试线路区段,被测试的两型动车组的一系垂向减振器载荷差异不明显,A型动车组的横向减振器载荷明显大于B型动车组的横向减振器载荷,A型动车组的抗蛇行减振器载荷小于B型动车组的抗蛇行减振器载荷.此外,合理的减振器模型和车辆系统动力学模型,能够再现两型动车组减振器载荷线路测试结果的一致性和差异性.In this study,strain gauges are installed on the vertical primary dampers,yaw dampers,and lateral secondary dampers on two types of CR400 Fuxing high-speed EMUs.The strain signals from damper loads are analyzed through tests conducted on the Beijing-Shanghai high-speed railway.By conducting data processing and analysis,the temporal profiles,frequency domain amplitudes,and load spectra of the three kinds of dampers in the two types of EMUs are obtained.The time domain and frequency domain characteristics of the corresponding damper loads on the two types of EMUs are analyzed.By employing vehicle system dynamics models and numerical methods,three types of damper loads on the two types of high-speed EMU under random track excitations are determined,thereby revealing the differences in damper loads between the two types of EMUs.The research re⁃sults demonstrate that along the entire test route,the differences in the vertical primary damper loads between the tested EMUs are negligible.The lateral damper loads of type A EMUs are significantly higher than those of type B EMUs,while the yaw damper loads of type A EMUs are lower than those of type B EMUs.Furthermore,by using appropriate damper and vehicle system dynamics models,the consistency and differences in the damper load test results of the two EMU types on the track can be accurately reproduced.

关 键 词：载运工具运用工程 高速动车组 减振器 载荷 线路试验 影响因素 

分 类 号：U270.1[机械工程—车辆工程]