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| 1 | Polygonisation of railway wheels:a critical review显示文摘Polygonisation is a common nonuniform wear phenomenon occurring in railway vehicle wheels and has a severe impact on the vehicle–track system,ride comfort,and lineside residents.This paper first summarizes periodic defects of the wheels,including wheel polygonisation and wheel corrugation,occurring in railways worldwide.Thereafter,the effects of wheel polygonisation on the wheel–rail interaction,noise and vibration,and fatigue failure of the vehicle and track components are reviewed.Based on the different causes,the formation mechanisms of periodic wheel defects are classified into three categories:(1)initial defects of wheels,(2)natural vibration of the vehicle–track system,and(3)thermoelastic instability.In addition,the simulation methods of wheel polygonisation evolution and countermeasures to mitigate wheel polygonisation are presented.Emphasis is given to the characteristics,effects,causes,and solutions of wheel polygonisation in metro vehicles,locomotives,and highspeed trains in China.Finally,the guidance is provided on further understanding the formation mechanisms,monitoring technology,and maintenance criterion of wheel polygonisation. | Gongquan Tao Zefeng Wen Xuesong Jin Xiaoxuan Yang | 2020 | Railway Engineering Science2020，28，4： | 20 |
| 2 | Track dynamic behavior at rail welds at high speed显示文摘作为与不同焊接不规则通过一个磁道的车辆,磁道部件的动态性能被使用 a coupled 车辆鈥搕r ack 模型详细调查。在模型,车辆与自由的 35 个学位作为一个多身体系统被建模,并且一根 Timoshenko 横梁被用来为被睡眠者分离地支持的栏杆建模。在课程模型,睡眠者为他们的垂直、侧面、滚动的运动作为僵硬身体财务被建模并且假定以经常的速度向后移动模仿以一样的速度沿着课程跑的车辆。在联合车辆和课程动力学的学习, Hertizian 接触理论和理论由沈鈥揌e drick 鈥揈l 建议分别地,家族被用来计算正常并且爬在车轮和栏杆之间的力量。在正常力量的计算,正常接触僵硬的系数被车轮和栏杆表面的短暂接触状况决定。在蠕动的计算,侧面,栏杆的连接运动和在在他们的普通正常方向的车轮和栏杆之间的相对速度等于零的事实同时被考虑。车辆和磁道的运动方程借助于一个明确的集成方法,栏杆焊接不规则作为垂直偏差由一些理想的余弦函数描述了的本地轨道在被建模被解决。不规则的火车速度,轴负担,波长和深度的效果,和在一个睡眠者的焊接中心位置在装载的车轮鈥搑a il 影响上跨越被分析。获得的数字结果是极大地在引起由的焊接栏杆侧面不规则的忍耐设计有用在栏杆焊接和轨道维护以后磨手。关键词栏杆焊接 - 不规则 - 车辆鈥搕r ack 联合动力学这个工程被中国(2007CB714702 ) 和中国(50821063, 50675183 和 50875221 ) 的国家自然科学基础的国家基本研究节目支持。 | Guangwen Xiao Xinbiao Xiao Jun Guo Zefeng Wen Xuesong Jin | 2010 | Acta Mechanica Sinica2010，26，3： | 9 |
| 3 | Effect of wheelset flexibility on wheel–rail contact behavior and a specific coupling of wheel–rail contact to flexible wheelset显示文摘The fexibility of a train's wheelset can have a large effect on vehicle–track dynamic responses in the medium to high frequency range.To investigate the effects of wheelset bending and axial deformation of the wheel web,a specifi coupling of wheel–rail contact with a fexible wheelset is presented and integrated into a conventional vehicle–track dynamic system model.Both conventional and the proposed dynamic system models are used to carry out numerical analyses on the effects of wheelset bending and axial deformation of the wheel web on wheel–rail rolling contact behaviors.Excitations with various irregularities and speeds were considered.The irregularities included measured track irregularity and harmonic irregularities with two different wavelengths.The speeds ranged from 200 to400km/h.The results show that the proposed model can characterize the effects of fexible wheelset deformation on the wheel–rail rolling contact behavior very well. | Shuoqiao Zhong Xinbiao Xiao Zefeng Wen Xuesong Jin | 2016 | Acta Mechanica Sinica2016，32，2： | 9 |
| 4 | Investigation into the Vibration of Metro Bogies Induced by Rail Corrugation显示文摘The current research of rail corrugation mainly focuses on the mechanisms of its formation and development. Compared with the root causes and development mechanisms, the wheel–rail impacts, the fatigue failure of vehicle-track parts, and the loss of ride comfort due to rail corrugation should also be taken into account. However, the influences of rail corrugation on vehicle and track vibration, and failure of vehicle and track structural parts are barely discussed in the literature. This paper presents an experimental and numerical investigation of the structural vibration of metro bogies caused by rail corrugation. Extensive experiments are conducted to investigate the effects of short-pitch rail corrugation on the vibration accelerations of metro bogies. A dynamic model of a metro vehicle coupled with a concrete track is established to study the influence of rail corrugation on the structural vibration of metro bogies. The field test results indicate that the short-pitch rail corrugation generates strong vibrations on the axle-boxes and the bogie frames, therefore, accelerates the fatigue failure of the bogie components. The numerical results show that short-pitch rail corrugation may largely reduce the fatigue life of the coil spring, and improving the damping value of the primary vertical dampers is likely to reduce the strong vibration induced by short-pitch rail corrugation. This research systematically studies the effect of rail corrugation on the vibration of metro bogies and proposes some remedies for mitigating strong vibrations of metro bogies and reducing the incidence of failure in primary coil springs, which would be helpful in developing new metro bogies and track maintenance procedures. | LING Liang LI Wei FOO Elbert WU Lei WEN Zefeng JIN Xuesong | 2017 | Chinese Journal of Mechanical Engineering2017，30，1： | 8 |
| 5 | Numerical Analysis of Rolling-sliding Contact with the Frictional Heat in Rail显示文摘Thermal damage caused by frictional heat of rolling-sliding contact is one of the most important failure forms of wheel and rail.Many studies of wheel-rail frictional heating have been devoted to the temperature field,but few literatures focus on wheel-rail thermal stress caused by frictional heating.However,the wheel-rail creepage is one of important influencing factors of the thermal stress.In this paper,a thermo-mechanical coupling model of wheel-rail rolling-sliding contact is developed using thermo-elasto-plastic finite element method.The effect of the wheel-rail elastic creepage on the distribution of heat flux is investigated using the numerical model in which the temperature-dependent material properties are taken into consideration.The moving wheel-rail contact force and the frictional heating are used to simulate the wheel rolling on the rail.The effect of the creepage on the temperature rise,thermal strain,residual stress and residual strain under wheel-rail sliding-rolling contact are investigated.The investigation results show that the thermally affected zone exists mainly in a very thin layer of material near the rail contact surface during the rolling-sliding contact.Both the temperature and thermal strain of rail increase with increasing creepage.The residual stresses induced by the frictional heat in the surface layer of rail appear to be tensile.When the creepage is large,the frictional heat has a significant influence on the residual stresses and residual strains of rail.This paper develops a thermo-mechanical coupling model of wheel-rail rolling-sliding contact,and the obtained results can help to understand the mechanism of wheel/rail frictional thermal fatigue. | LI Wei WEN Zefeng JIN Xuesong WU Lei | 2014 | Chinese Journal of Mechanical Engineering2014，27，1： | 2 |
| 6 | Dynamic vehicle-track interaction and plastic deform-ation of rail at rail welds显示文摘 | WEN Zefeng XIAO Guangwen XIAO Xinbiao | 2009 | Engineering Failure Anal- ysis2009，16，4： | 1 |
| 7 | Plastic deformation of curved rail at rail weld caused by train- track dynamic interaction 显示文摘 | LI Wei XIAO Guangwen WEN Zefeng | 2011 | Wear2011，271，1： | 1 |
| 8 | Effects of Structure Elastic Deformations of Wheelset and Track on Creep Forces of Wheel/Rail in Rolling Contact显示文摘 | JIN Xuesong WU Pingbo WEN Zefeng | 2002 | Wear2002，253，： | 1 |
| 9 | Effect of disabled fastening systems and ballast on vehicle derailment 显示文摘 | XIAO Xinbiao JIN Xuesong WEN Zefeng | 2007 | ASME J Vibration & Acoustic2007，129，2： | 1 |
| 10 | Effect of sleeper pitch on rail corrugation at a tangent track in vehicle hunting 显示文摘 | JIN Xuesong XIAO Xinbiao WEN Zefeng | 2008 | Wear2008，265，910： | 1 |
| 11 | Three-dimensional train-track model for study of rail corrugation显示文摘 | JIN Xuesong WEN Zefeng WANG Kaiyun | 2006 | Journal of Sound and Vibration2006，293，35： | 1 |
| 12 | Effect of discrete track support by sleepers on rail corrugation at a curved track 显示文摘 | JIN Xuesong WEN Zefeng | 2008 | J Sound & Vibration2008，315，12： | 1 |
| 13 | An Investigation into the Effect of Train Curving on Wear and Contact Stresses of Wheel and Rail 显示文摘 | JIN Xuesong XIAO Xinbiao WEN Zefeng | 2009 | Tribology International2009，42，3： | 1 |
| 14 | Effect of disabled fastening systems and ballast on vehicle derailment 显示文摘 | Xiao Xinbiao Jin Xuesong Wen Zefeng | 2007 | ASME Journal of Vibration and Acoustic2007，129，2： | 1 |
| 15 | Effect of a scratch on curved rail on initiation and evolution of rail corrugation显示文摘 | JIN Xuesong WEN Zefeng WANG Kaiyun | 2004 | Tribology International2004，37，： | 1 |
| 16 | Contactimpact stress analysis of rail joint region using the dynamic finite element methnd显示文摘 | WEN Zefeng JIN Xuesong ZHANG Weihua | 2005 | Wear2005，，258： | 1 |
| 17 | Contact-lmp&ct Stress Analysis of Pu&il Joint P~egion using the Dynamic Finite Element Method 显示文摘 | Zefeng WEN Xuesong JIN Weihua ZHANG | 2005 | Wear2005，258，： | 1 |
| 18 | Effect of sleeper pitch on rail corrugation at a tangent track in vehicle hunting 显示文摘 | Jin Xuesong Xiao Xinbiao Wen Zefeng | 2008 | Wear2008，265，： | 1 |
| 19 | Effect of tangent track buckle on vehicle derailment 显示文摘 | XIAO Xinbiao JIN Xuesong WEN Zefeng | 2011 | Multibody System Dynamics2011，25，1： | 1 |
| 20 | Effect of disabled fastening systems and ballast on vehicle derailment显示文摘 | Xiao XinbaoyJin Xuesong Wen Zefeng | 2007 | Journal of Vibration and Acoustics2007，129，2： | 1 |
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