轮轨横移黏着作用下轨道车辆轮对−齿轮传动系统动力学研究  

Study on dynamics of wheelset-gear transmission system of rail vehicle in wheel-rail lateral adhesion

作　　者：樊林放 徐向阳[1,2] 田富文 倪元庆 陈兆玮 FAN Linfang;XU Xiangyang;TIAN Fuwen;NI Yuanqing;CHEN Zhaowei(School of Traffic&Transportation,Chongqing Jiaotong University,Chongqing 400074,China;School of Mechatronics and Vehicle Engineering,Chongqing Jiaotong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学交通与运输学院,重庆400074 [2]重庆交通大学机电与车辆工程学院,重庆400074

出　　处：《中南大学学报(自然科学版)》2025年第2期807-818,共12页Journal of Central South University:Science and Technology

基　　金：重庆市杰出青年科学基金资助项目(cstc2021jcyj-jqX0010);重庆市研究生科研创新项目(CYB23257)。

摘　　要：针对曲线段轮对横移黏着作用下轮对−齿轮传动系统动态特性不明等问题,本文通过曲线段轮对横移受力和空间接触几何分析,结合改进的Kik-Piotrowski理论和FaStrip算法,提出曲线段轮轨横移动态黏着接触模型;综合考虑轮轨动态黏着激励、时变啮合刚度、非线性轴承接触力等因素,建立轮轨横移黏着作用下轮对−齿轮传动系统动力学模型;最后分析不同曲线段下轮轨黏着接触特性以及曲线半径、运行速度对传动系统动态特性的影响。研究结果表明:当横移量为0 mm时,左右轮轨接触斑对称且面积相等,两侧最大法向接触应力均为155.1 MPa,且位于接触斑正中心,两侧最大切向接触应力均为40.2 MPa,且均位于接触斑左侧滑移区;随着正向横移量增大,左侧轮轨法、切向接触应力幅值先减小后增大,右侧法向、切向应力幅值逐渐减小,且分布位置向轮对中心偏移,接触斑滑动区占比逐渐增大,轮轨黏着接触性能逐渐恶化;随着曲线半径减小和运行速度增加,齿轮啮合力、轴承接触力和左右侧横向轮轨力都随之增大,从而加剧系统振动,并且在内外耦合激励影响下,左侧轴承接触力和轮轨力均比右侧的高。Aiming at the problem of unclear dynamic characteristics of wheelset-gear transmission systems in lateral adhesion of curved section in current research,a dynamic adhesive contact model of wheel-rail lateral movement in curved section was proposed by analysising lateral slip force and spatial contact geometry of wheelset,combined with modified Kik-Piotrowski theory and FaStrip algorithm.Considering wheel-rail dynamic adhesion excitation,time-varying meshing stiffness,nonlinear bearing contact force,etc.,dynamic model of wheelset-gear transmission system under the action of wheel-rail lateral adhesion was established.Finally,wheel rail adhesive contact characteristics in different curve sections and the influence of curve radius and running speed on the dynamic characteristics of the coupled transmission system were analyzed.The results show that when the lateral displacement is 0 mm,the left and right wheel-rail contact spots are symmetrical and have equal areas,the maximum normal contact stress is 155.1 MPa and is located at the center of the contact spot,the maximum tangential contact stresses on both sides are 40.2 MPa,which are located in the sliding zone on the left side of contact spot,and with the increase of positive lateral displacement,normal and tangential contact stress amplitude of left wheel-rail decreases first and then increases,normal and tangential contact stress amplitude of right wheel rail decreases gradually,and distribution position of the stress amplitude shifts to the center of the wheelset,the proportion of the sliding zone of contact spot increases gradually,and wheel-rail adhesive contact performance deteriorates gradually.With the decrease of the curve radius and increase of running speed,the gear meshing force,bearing contact force and lateral wheel-rail force on the left and right sides increase,which aggravates the system vibration.Under the influence of internal and external coupling excitation,the bearing contact force and the wheel rail force on left side are higher than those o

关 键 词：轨道车辆 轮对横移 轮轨黏着 传动系统 动态特性 

分 类 号：U264.4[机械工程—车辆工程]