西南交通大学学报2023，Vol.58Issue(6)：1339-1346,8.DOI:10.3969/j.issn.0258-2724.20210448
车轮多边形对重载机车轮轨相互作用及接触损伤的影响分析
Wheel-Rail Interaction and Rolling Fatigue Damage of Heavy-Haul Locomotive Subjected to Wheel Polygonal Wear
摘要
Abstract
In order to study the rolling fatigue damage(RCF)of heavy-haul locomotive wheels,the three-dimensional heavy-haul locomotive-track coupled dynamics model was established,and the dynamic interaction behavior of locomotive wheel-rail system under the condition of wheel polygonal wear and different rail surface frictions was studied.On this basis,a wheel tread RCF prediction model based on the dynamic responses of the wheel-rail system was established,and the effect of wheel polygonal wear on the wheel surface wear was studied under the changing wheel-rail friction conditions with the braking effort.The results suggest that the wheel polygonal wear not only intensifies wheel-rail dynamic interaction but also increases wheel-rail interface wear and damage.The wheel polygonal wear can aggravate the wheel tread RCF under the dry contact condition.The fluctuation range of the damage index of the locomotive with one and four wheelsets increases by 19.59%and 39.43%compared with that of a normal wheel.Under the low-adhesion contact condition,the wheel polygonal wear can aggravate the wheel wear,and the fluctuation range of wheel-rail creep force increases 5.85 times.The fluctuation range of the wear number of the locomotive with one and four wheelsets improves 6.44 times and 6.22 times,respectively.关键词
重载机车/车轮疲劳损伤/车轮多边形/车辆-轨道耦合动力学/损伤指数Key words
heavy-haul locomotive/rolling fatigue damage of wheels/wheel polygonal wear/locomotive-track coupled dynamics/damage index分类
交通工程引用本文复制引用
张波,杨云帆,凌亮,王开云..车轮多边形对重载机车轮轨相互作用及接触损伤的影响分析[J].西南交通大学学报,2023,58(6):1339-1346,8.基金项目
国家自然科学基金(U2268210,52072317,51825504) （U2268210,52072317,51825504）
