Study on the Influence of Wheel Polygon on the Fatigue Strength of High-speed Train Axle

doi:10.3901/JME.2023.06.185

Abstract

Abstract: Wheel polygon is a common defect of wheel irregularities of railway vehicles, which has significant influence on wheel set vibration and vehicle operation safety. Based on the establishment of rigid/flexible coupling trailer and motor vehicle system dynamics models, the wheel polygon is simplified into simple harmonics and considered as the change of wheel diameter. The influence of 20th order wheel polygon on the fatigue strength of the trailer axle and motor axle are studied. The results show that the equivalent stress amplitude ratio is in a non-linear relationship with the vehicle speed, and the peak positions of trailer car and motor car are different. The peak position of the trailer car occurs at the speed of 225 km/h, corresponding to the polygonal excitation frequency of 432.7 Hz, and the peak positions at 300 km/h and 375 km/h for different sections of motor car, and the corresponding polygonal excitation frequencies are 576.5 Hz and 721.2 Hz respectively. At each peak position, the change of the polygon amplitude has significant influence on the equivalent stress ratio of some sections of the trailer car and motor car. Both the maximum equivalent stress of trailer axle and motor axle lie in Section C, and with the increase of wheel polygon amplitude, the equivalent stress increases significantly, which exceeds the fatigue strength limit and reduces the service life of axle. It is useful of the results to improve the influence of 20th order wheel polygon on the fatigue strength and flexible vibration of high-speed train axle.

Key words: high-speed train, wheel polygon, fatigue strength, dynamic stress, equivalent stress

CLC Number:

U271

GAO Chuang, SUN Shouguang, REN Zunsong, REN Junlin. Study on the Influence of Wheel Polygon on the Fatigue Strength of High-speed Train Axle[J]. Journal of Mechanical Engineering, 2023, 59(6): 185-193.

References

[1] POPP K,KAISER I,KRUSE H. System dynamics of railway vehicles and track[J]. Archive of Applied Mechanics,2003,72(11-12):949-961.
[2] JOHANSSON A,ANDERSSON C. Out-of-round railway wheels-A study of wheel polygonalization through simulation of three-dimensional wheel-rail interaction and wear[J]. Vehicle System Dynamics,2005,43(8):539-559.
[3] WANG Z,ALLEN P,MEI G,et al. Influence of wheel-polygonal wear on the dynamic forces within the axle-box bearing of a high-speed train[J]. Vehicle System Dynamics,2019,58(9):1385-1406.
[4] 崔潇,姚建伟,孙丽霞. 基于柔性旋转轮对的车轮多边形磨耗对轮轨力的影响分析[J]. 铁道建筑,2019,59(6):140-145. CUI Xiao,YAO Jianwei,SUN Lixia. Analysis on influence of wheel polygon wear on wheel-rail force based on flexible rotating wheelset[J]. Railway Engineering,2019,59(6):140-145.
[5] 钱卿. 武广高铁车轮多边形综合整治研究[J]. 铁道机车车辆,2019,39(2):56-60. QIAN Qing. Study on wheel polygon comprehensive improvement of wuguang high-speed line[J]. Railway Locomotive & Car,2019,39(2):56-60.
[6] WU Xingwen,CHI Maoru,WU Pingbo. Influence of polygonal wear of railway wheels on the wheel set axle stress[J]. Vehicle System Dynamics,2015,53(11):1535-1554.
[7] WU Xingwen,CHI Maoru,GAO Hao. Damage tolerances of a railway axle in the presence of wheel polygonalizations[J]. Engineering Failure Analysis,2016,66:44-59.
[8] CAI Wubin,CHI Maoru,WU Xingwen,et al. Experimental and numerical analysis of the polygonal wear of high-speed trains[J]. Wear,2019,440-441:203079-20390.
[9] 张富兵,邬平波,吴兴文,等. 高速列车车轮多边形对轴箱的影响分析[J]. 振动,测试与诊断,2018,38(5):1063-1068,1088. ZHANG Fubing,WU Pingbo,WU Xingwen,et al. Effects of wheel polygonalization on axle box for high speed train[J]. Journal of Vibration,Measurement & Diagnosis,2018,38(5):1063-1068,1088.
[10] 吴越,韩健,刘佳,等. 高速列车车轮多边形磨耗对轮轨力和转向架振动行为的影响[J]. 机械工程学报,2018,54(4):37-46. WU Yue,HAN Jian,LIU Jia,et al. Effect of high-speed train polygonal wheels on wheel/rail contact force and bogie vibration[J]. Journal of Mechanical Engineering,2018,54(4):37-46.
[11] 杨光,任尊松. 基于弹性模型的高速列车曲线通过时轮轨接触特性研究[J]. 机械工程学报,2018,54(4):132-141. YANG Guang,REN Zunsong. Wheel/rail contact performance on curved track of high-speed EMU with elastic model[J]. Journal of Mechanical Engineering,2018,54(4):132-141.
[12] 范军,王鹏,刘孟奇,等. 标准动车组车轮磨耗特征研究[J]. 噪声与振动控制,2019,39(6):112-116. FAN Jun,WANG Peng,LIU Mengqi,et al. The feature of wheel wear of Chinese standard EMUs[J]. Noise and Vibration Control,2019,39(6):112-116.
[13] CASAS J,MAZZOLA L,BAEZA L,et al. Numerical estimation of stress in railway axles using a train-track interaction model[J]. International Journal of Fatigue,2013,47:18-30.
[14] 张晓斌. 中国标准动车组轮轴载荷谱与应力谱的试验研究[D]. 北京:北京交通大学,2018. ZHANG Xiaobin. The Study on Stress and Load Spectrum of the Wheel Axle of CR[D]. Beijing:Beijing Jiaotong University,2018.
[15] European committee for standardization. BS EN 13103-2001 Railway applications-wheelsets and bogies-Non-powered axles-design method[S]. Brussels:European Committee for Standardization,2001.
[16] European committee for standardization. BS EN 13104-2001 Railway applications-wheelsets and bogies-powered axles-design method[S]. Brussels:European Committee for Standardization,2001.