西南交通大学学报2025，Vol.60Issue(2)：346-355,10.DOI:10.3969/j.issn.0258-2724.20230173
考虑等效锥度离散度的JM3车轮型面优化
Optimization of JM3 Wheel Profile Considering Equivalent Conicity Dispersion
摘要
Abstract
Wheel-rail profile compatibility has an important influence on the dynamic performance of rail vehicles.The present standard JM3 wheel profile has a large difference in equivalent conicity when it is matched with different types of rail profiles in China.It has the problem of locomotive swaying caused by too low equivalent conicity when the profile is matched with the grinding rail with large rail cant.To address these issues,the optimization objective of reducing the equivalent conicity dispersion of the wheel profile matched with CN60 and CN60N rail profiles under different rail cants was set.The wheel profile was described by a method combining arcs and straight lines.The JM3 wheel profile was optimized by utilizing NSGA-II genetic algorithm to improve the lateral position parameters of the two arc centers near the rolling circle.The wheel-rail contact characteristics and the locomotive dynamic simulation of the wheel profile before and after optimization were compared.The results show that when the optimized wheel profile is matched with the rails above,the nominal equivalent conicities at the 3 mm transverse displacement of the wheelset are all about 0.1,which reduces the equivalent conicity dispersion of the original JM3 wheel profile and improves the adaptability of the wheel profile to different rail profiles and line conditions.At the same time,the locomotive hunting stability,lateral stability,curving performance,and wear performance index of the optimized profile are all improved compared with the original wheel profile.In addition,the phenomenon of low-frequency swaying of locomotives on specific lines is eliminated.关键词
JM3型面/等效锥度/轮轨匹配/多目标优化/动力学性能Key words
JM3 wheel profile/equivalent conicity/wheel-rail profile compatibility/multi-objective optimization/dynamic performance分类
交通工程引用本文复制引用
孟凡愚,沈龙江,邓小星,姚远..考虑等效锥度离散度的JM3车轮型面优化[J].西南交通大学学报,2025,60(2):346-355,10.基金项目
国家自然科学基金项目(52372403,U2268211) （52372403,U2268211）
四川省自然科学基金项目(2022NSFSC0034,2022NSFSC1901) （2022NSFSC0034,2022NSFSC1901）
国铁集团科研开发计划课题(N2023J071) 牵引动力国家重点实验室自主研究课题(2022TPL-T02)资助. （N2023J071）
