Influence of Wheelset Flexibility on Dynamic Response of Linear Induction Motor Vehicles
-
摘要: 直线电机地铁车辆有内置和外置两种轴箱布置方式，针对这两种轴箱布置的直线电机地铁车辆，分别建立了考虑轮对柔性的直线电机地铁车辆-轨道耦合动力学模型. 模型中轮轴采用欧拉梁模拟，考虑轮对柔性变形对一系悬挂作用力、电机吊杆力以及轮轨空间动态相互作用的影响，对比分析了在轮轨不平顺激扰作用下，轴箱内置和外置直线电机地铁车辆轮对柔性响应特性及其对系统动态响应的影响. 研究结果表明：相比于刚性轮对模型，两种直线电机地铁车辆柔性轮对模型求解所得轮轨垂向力响应均存在77 Hz的主振频率峰值，对应于轮对的一阶弯曲模态频率；当考虑轮对柔性效应时，相比于轴箱外置直线电机地铁车辆，轴箱内置直线电机地铁车辆的轮轨垂向力更大，气隙更小.
-
关键词:
- 直线电机地铁车辆 /
- 轴箱 /
- 车辆-轨道耦合动力学 /
- 轮对弯曲模态 /
- 气隙
Abstract: Linear induction motor (LIM) metro vehicles adopt either inside or outside axle boxes. Aiming at two kinds of LIM metro vehicles, the LIM vehicle-track coupling dynamic model was established respectively, in which the wheel axle was modeled as Euler beam, and the effect of the wheelset flexible deformation on the primary suspension force, motor boom force and the wheel-rail spatial dynamic interaction was considered. The flexible response characteristic of the wheelset as well as the influence on the system dynamic response of LIM vehicles with inside and outside axle boxes was analysed comparatively under the excitation of the wheel/rail irregularity. The results show that, compared with the rigid wheelset model, the main vibration frequency of 77 Hz exists in the dynamic response of the flexible wheelset model for these two kinds of LIM vehicles, which corresponds to the first-order bending-mode frequency of the wheelset. With the consideration of the flexibility of wheelset, the LIM vehicles with inside axle boxes has larger wheel-rail vertical force and smaller air gap in comparison to those with outside axle boxes.-
Key words:
- linear induction motor (LIM) /
- axle box /
- vehicle-track coupling dynamics /
- bending mode /
- air gap
-
图 4 考虑柔性轮对的轮轨空间相互作用模型
Figure 4. Wheel-rail interaction model with consideration of wheelset flexibility
图 5 轮轨垂向力（轴箱内置直线电机地铁车辆）
Figure 5. Wheel-rail vertical force (LIM vehicles with inside axle boxes)
图 6 轮轨垂向力（轴箱外置直线电机地铁车辆）
Figure 6. Wheel-rail vertical force (LIM vehicles with outside axle boxes)
-
KNOTHE K L, GRASSIE S L. Modelling of railway track and vehicle/track interaction at high frequencies[J]. Vehicle System Dynamics, 1993, 22(34): 209-262. POPP K, KRUSE H, KAISER I. Vehicle-track dynamic in the mid-frequency range[J]. Vehicle System Dynamics, 1999, 31: 423-464. doi: 10.1076/vesd.31.5.423.8363 ANDERSSON C, ABRAHAMSSON T. Simulation of interaction between a train in general motion and a track[J]. Vehicle System Dynamics, 2002, 38(6): 433-455. doi: 10.1076/vesd.38.6.433.8345 CHAAR N, BERG M. Vehicle-track dynamic simulations of a locomotive considering wheelset structural flexibility and comparison with measurements[J]. Rail and Rapid Transit, 2005(7): 225-238. JIN X S, WU L, FANG J Y, et al. An investigation into the mechanism of the polygonal wear of metro train wheels and its effect on the dynamic behaviour of a wheel/rail system[J]. Vehicle System Dynamic, 2012, 50(12): 1814-1837. 罗仁,曾京,邬平波,等. 高速列车车轮不圆顺磨耗仿真及分析[J]. 铁道学报,2010,32(5): 30-35.LUO Ren, ZENG Jing, WU Pingbo, et al. Simulation and analysis of wheel out-of-roundness wear of high-speed rain[J]. Journal of the China Railway Society, 2010, 32(5): 30-35. 高浩,戴焕云,倪平涛. 考虑轮对弹性的轮轨接触点算法[J]. 铁道学报,2012,34(5): 26-31. doi: 10.3969/j.issn.1001-8360.2012.05.005GAO Hao, DAI Huanyun, NI Pingtao. Algorithm of wheel-rail contact point for flexible wheelset[J]. Journal of the China Railway Society, 2012, 34(5): 26-31. doi: 10.3969/j.issn.1001-8360.2012.05.005 ZHONG S Q, XIAO X B, WEN Z F, et al. The effect of first-order bending resonance of wheelset at high speed on wheel-rail contact behavior[J]. Advances in Mechanical Engineering, 2013: 296106. ZHONG S Q, XIONG J Y, XIAO X B, et al. Effect of the first two wheelset bending modes on wheel-rail contact behavior[J]. Journal of Zhejiang University-Science A:Applied Physics & Engineering, 2014, 15(12): 984-1001. 钟硕乔. 柔性轮对建模初探[D]. 成都: 西南交通大学, 2012. 邓铁松,吴磊,凌亮,等. 轴箱内置与外置直线电机地铁车辆曲线通过性能对比[J]. 计算机辅助工程,2015(1): 12-17.DENG Tiesong, WU Lei, LING Liang, et al. Comparison of curving performance of linear induction motor metro vehicles with inside and outside axle boxes[J]. Computer Aided Engineering, 2015(1): 12-17. XIAO X B, JIN X S, WEN Z F. Effect of disabled fastening systems and ballast on vehicle derailment[J]. ASME Journal of Acoustic and Vibration, 2007, 129(2): 217-229. doi: 10.1115/1.2424978 翟婉明. 车辆-轨道耦合动力学[M]. 3版. 北京: 科学出版社, 2007: 12-84. 王开文. 轮轨接触点迹线及轮轨接触几何参数的计算[J]. 西南交通大学学报,1984,1: 89-99.WANG Kaiwen. The track of wheel contact points and the calculation of wheel/rail geometric contact parameters[J]. Journal of Southwest Jiaotong University, 1984, 1: 89-99. CHEN G, ZHAI W M. A new wheel/rail spatially dynamic coupling model and its verification[J]. Vehicle System Dynamics, 2004, 41(4): 301. doi: 10.1080/00423110412331315178 SHEN Z Y, HEDRICK J K, ELKINS J A. A comparison of alternative creep-force models for rail vehicle dynamic analysis[J]. Vehicle System Dynamic, 1983, 12(1): 79-83. ZHAI W M. Two simple fast integration methods for large-scale dynamic problem in engineering[J]. International Journal for Numerical Methods in Engineering, 1996, 39(24): 4199-4214. doi: 10.1002/(SICI)1097-0207(19961230)39:24<4199::AID-NME39>3.0.CO;2-Y -
下载:
点击查看大图
图(8)
计量
- 文章访问数: 483
- HTML全文浏览量: 248
- PDF下载量: 14
- 被引次数: 0