Effect of Hollow Worn Tread of Electric Multiple Units on Vehicle Stability
-
摘要: 针对某型高速动车组在运行过程中出现构架横向报警的问题，建立考虑踏面凹型磨耗的动车组动力学模型. 通过仿真分析和现场试验相结合的方法，研究不同运行里程凹型磨耗踏面与钢轨的轮轨关系以及凹磨踏面对车辆稳定性的影响. 研究结果表明：镟修踏面与钢轨匹配时轮轨接触点呈现均匀分布，凹型磨耗踏面轮轨接触点主要分布在凹磨区域两侧；随着轮对横移接触点发生跳跃，产生假轮缘效应，引起剧烈的轮轨横向冲击；随着凹磨加剧车辆稳定性逐渐降低，当车辆高速运行过程中，凹磨踏面对应构架蛇行带来横向振动频率与构架自身的固有振动频率接近，容易发生横向耦合振动，使得横向加速度超过限制值；踏面凹磨是造成构架横向报警重要原因，通过轮对镟修能够有效抑制构架报警情况发生.Abstract: To solve the issue of frame lateral instability alarm of high-speed EMU (electric multiple units) in the running process, a vehicle dynamics model considering hollow worn tread was established. The wheel-rail relationship between worn treads of different running distance and rail as well as the influence of hollow worn tread on vehicle stability were researched used theoretical analysis, simulation analysis and field tests.The calculation results show that the contact points between turning tread and rail are in uniform distribution. However, for hollow wear tread, contact points distributed on both sides of the depression area. The“False flange effect”initiated by leap metastases of contact point caused severe lateral wheel/rail impact. While the vehicle running at high speed, the lateral vibration frequency is close to the natural vibration frequency of the frame itself, which would induce lateral coupled vibration of bogie and exceed the limit criteria. Through simulation analysis and field test discover hollow worn tread is an important indication for frame lateral alarm. Using wheel re-profiling can improve lateral stability of bogie.
-
Key words:
- high-speed electric multiple units /
- hollow worn tread /
- wheel/rail contact /
- stability
-
ZBOINSKI K, DUSZA M. Bifurcation analysis of 4-axle rail vehicle models in a curved track[J]. Nonlinear Dynamics, 2017, 89(2): 1-23. DETTMANN C P, FAIN V. Linear and nonlinear stability of periodic orbits in annular billiards[J]. Chaos, 2017, 27(4): 521-192. 崔大宾. 高速车轮踏面设计方法研究[D]. 成都: 西南交通大学, 2013. CUI D, ZHANG W, TIAN G, et al. Designing the key parameters of EMU bogie to reduce side wear of rail[J]. Wear, 2016, 366/367: 49-59. doi: 10.1016/j.wear.2016.07.002 黄照伟. 车轮磨耗及其对车辆动力学性能的影响[D]. 成都: 西南交通大学, 2012. 黄照伟,崔大宾,杜星,等. 车轮偏磨对高速列车直线运行性能的影响[J]. 铁道学报,2013,35(2): 14-20.HUANG Zhaowei, CUI Dabin, DU Xing, et al. Influence of deviated wear of wheel on performance of high-speed train running on straight tracks[J]. Journal of the China Railway Society, 2013, 35(2): 14-20. 黄彩虹,罗仁,曾京,等. 系统参数对高速列车车轮踏面凹陷磨耗的影响[J]. 交通运输工程学报,2016,16(3): 55-62.HUANG Caihong, LUO Ren, ZENG Jing, et al. Effect of system parameters on tread-hollow wear of high-speed train wheels[J]. Journal of Traffic and Transportation Engineering, 2016, 16(3): 55-62. 黄彩虹. 高速车辆减振技术研究[D]. 成都: 西南交通大学, 2012. KAKLAR J A, GHAJAR R, TAVAKKOLI H. Modelling of nonlinear hunting instability for a high-speed railway vehicle equipped by hollow worn wheels[J]. Proceedings of the Institution of Mechanical Engineers Part K:Journal of Multi-body Dynamics, 2016, 230(4): 553-567. doi: 10.1177/1464419316636968 LI H, LI F, HUANG Y. Research on wheel hollow wear and dynamic performance of freight radial bogies[J]. Proceedings of the Institution of Mechanical Engineers Part F: Journal of Rail & Rapid Transit, 2017, 231(9): 1-7. FRÖHLING R, EKBERG A, KABO E. The detrimental effects of hollow wear––field experiences and numerical simulations[J]. Wear, 2008, 265(9): 1283-1291. SAWLEY K, URBAN C, WALKER R. The effect of hollow-worn wheels on vehicle stability in straight track[J]. Wear, 2005, 258(7/8): 1100-1108. SAWLEY K, WU H. The formation of hollow-worn wheels and their effect on wheel/rail interaction[J]. Wear, 2005, 258(7/8): 1179-1186. 周清跃,田常海,张银花,等. CRH3型动车组构架横向失稳成因分析[J]. 中国铁道科学,2014,35(6): 105-110.ZHOU Qingyue, TIAN Changhai, ZHANG Yinhua, et al. Cause analysis for the lateral instability of CRH3 EMU framework[J]. China Railway Science, 2014, 35(6): 105-110. 孙丽霞. 高速铁路轮轨型面匹配对车辆动力学性能的影响[J]. 中国铁道科学,2017(6): 108-117.SUN Lixia. Influence of wheel-rail profile matching for high speed railway on vehicle dynamics performance[J]. China Railway Science, 2017(6): 108-117. POLACH O. Comparability of the non-linear and linearized stability assessment during railway vehicle design[J]. Vehicle System Dynamics, 2006, 44(S1): 129-138. 王开云,刘鹏飞. 铁路货车通过曲线轨道时的非线性运动稳定性研究[J]. 中国铁道科学,2011,32(2): 85-89.WANG Kaiyun, LIU Pengfei. Research on the nonlinear hunting stability of railway freight car on curved track[J]. China Railway Science, 2011, 32(2): 85-89. 翟婉明,王开云,陈建政. 铁路货车横向非线性动态行为的理论与试验研究[J]. 机械工程学报,2008,44(11): 63-68.ZHAI Wanming, WANG Kaiyun, CHEN Jianzheng. Theoretical and experimental investigation on nonlinear lateral dynamical behavior of railway wagon[J]. Chinese Journal of Mechanical Engineering, 2008, 44(11): 63-68. 田光荣. 铁路货车蛇行失稳评判限值的研究[J]. 中国铁道科学,2016,37(5): 87-93.TIAN Guangrong. Evaluation limit for hunting instability of railway freight train[J]. China Railway Science, 2016, 37(5): 87-93. SICHANI M S, ENBLOM R, BERG M. A fast wheel-rail contact model for application to damage analysis in vehicle dynamics simulation[J]. Wear, 2016, 366/367: 123-130. -
下载:
点击查看大图
图(17)
计量
- 文章访问数: 656
- HTML全文浏览量: 347
- PDF下载量: 45
- 被引次数: 0