转臂定位节点非线性特性对动车组动力学性能的影响
王业，曾京
（西南交通大学 牵引动力国家重点试验室，四川 成都 610000）
摘要：橡胶弹性元件的动态特性通常与激励振幅和频率以及温度相关，针对某型号高速动车组的一系定位节点，在常温下进行了相关试验，得出了该橡胶定位节点在不同激励频率与不同激励振幅下的动态特性，在试验数据的基础上，建立了高速列车一系转臂定位节点的非线性动力学模型，并分析了其对于轮轨横向力与构架横向稳定性的影响，结果表明动车组转臂橡胶节点的非线性刚度在常温下与频率关联较弱，与振幅关联较强；采用非线性橡胶节点的动车组模型其轮轨横向力高于线性模型，其构架横向振动剧烈程度高于线性模型。
关键词：转臂定位节点；非线性模型；动车组；轮轨横向力
中图分类号：U270.2 文献标志码：A doi：10.3969/j.issn.1006-0316.2019.07.004
文章编号：1006－0316 (2019) 07－0017－05
The Effect of Nonlinear Characteristics of Rotating Arm Positioning Nodes on the Dynamic Performance of EMUs
WANG Ye，ZENG Jing
( State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610000, China )
Abstract：The dynamic characteristics of rubber elastic elements are usually related to the excitation amplitude, frequency and temperature. Aiming at the positioning nodes of prime suspension of a type of high-speed EMU, relevant experiments are carried out at room temperature, and the dynamic characteristics of the rubber positioning nodes under different excitation frequencies and amplitudes are obtained. Based on the experimental data, a non-linear dynamic model of the positioning nodes of the rotating arm of high-speed train is established, and its influence on the lateral force of wheel-rail and the lateral stability of the bogie is analyzed. The results show that the non-linear stiffness of rubber joints of EMU's rotating arm has weak correlation with frequency and strong correlation with amplitude at room temperature. The wheel-rail lateral force of the EMU model with non-linear positioning nodes is higher than that of the linear model, and the lateral vibration intensity of the bogie is higher than that of the linear model.
Key words：rotating arm positioning node；non-linear model；EMU；wheel-rail lateral force
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收稿日期：2019－02－26
基金项目：国家重点研发计划资助（2017YFB1201304－11）
作者简介：王业（1993－），男，河北邯郸人，硕士，主要研究方向为车辆系统动力学；曾京（1963－），男，湖南涟源人，博士，教授、博导，主要研究方向为车辆系统动力学。
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