Improved Dynamics Model of Locomotive Traction Motor with Elasticity of Rotor Shaft and Supporting Bearings

作     者：Yuqing Liu Zaigang Chen Jieyu Ning Kaiyun Wang Wanming Zhai Yuqing Liu;Zaigang Chen;Jieyu Ning;Kaiyun Wang;Wanming Zhai

作者机构：State Key Laboratory of Traction PowerSouthwest Jiaotong UniversityChengdu 610031China 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2022年第35卷第5期

页      面：333-350页

核心收录：

学科分类：082304[工学-载运工具运用工程] 08[工学] 080204[工学-车辆工程] 0802[工学-机械工程] 0823[工学-交通运输工程] 

基　　金：National Natural Science Foundation of China(Grant Nos.52022083 51775453 and 51735012) 

主　　题：Traction motor Bearing Gear mesh Vehicle-track coupled dynamics 

摘      要：The locomotive traction motor is described as a rotor-bearing system coupling the kinetic equations of the traction shaft and its support bearings with the determination of their elastic deformations in this *** the effect of excitations induced by the dynamic rotor eccentric distance and time-varying mesh stiffness,the elastic structure deformations of the shaft and support bearings are formulated in the vibration environment of the *** addition,the nonlinear contact forces between the components of the rolling bearing,the lubricating oil film,and radial clearance are comprehensively considered in this *** results indicate that the elastic deformations of the shaft and bearings can change the dynamic responses of the traction motor and its support *** are large differences between the ranges of the rotor motion calculated by the rigid and the flexible traction motor models when the intensified wheel-rail interaction is *** the increase of the rotor eccentricity,the results underscore the role of the elasticity of traction shaft and support bearings in dynamic researches of the traction *** critical value of the initial eccentric distance for the rub-impact phenomenon decreases from 1.23 mm to 1.15 mm considering the flexible effect of the shaft and *** dynamics model of the traction motor can provide more accurate and reasonable simulation results for correlational dynamic researches.