基于修正的轮轨非Hertz接触的重载铁路曲线超高对-机械工程学报.PDFVIP

第 54 卷第 4 期 机 械 工 程 学 报 Vol.54 No.4 2018 年 2 月 JOURNAL OF MECHANICAL ENGINEERING Feb. 2018 DOI ：10.3901/JME.2018.04.022 基于修正的轮轨非Hertz 接触的重载铁路曲线 超高对钢轨磨耗的影响分析* 杨新文 姚一鸣 周顺华 练松良 ( 同济大学道路与交通工程教育部重点实验室 上海 201804) 摘要：为了探讨重载铁路平曲线超高对钢轨磨耗的影响，首先利用有限元方法求解了轮轨法向接触影响系数，然后建立了详 细的钢轨磨耗预测分析模型，模型包括车辆-轨道耦合动力学模型、修正的轮轨非赫兹法向接触模型、轮轨切向接触模型和 Archard 磨耗模型，并用现场实测结果验证了预测模型的正确性。利用该模型计算分析了曲线超高对重载铁路钢轨磨耗的影 响。结果表明：假定车速为 60 km/h，在曲线半径450 m 线路条件下，曲线中点处外轨的侧磨量大于垂磨量；随着通过总重 的增加，钢轨磨耗宽度，垂磨量呈阶梯状发展，磨耗宽度在磨耗初期发展迅速，随后趋于稳定；在曲线超高0.05 m、0.07 m、 0.09 m，线路半径 1 000 m 的条件下，随着外轨超高增大，外轨磨耗有增大的趋势，内轨磨耗有减小的趋势，主要原因是轮 对横移量比轮轨法向力对钢轨磨耗的影响更加明显。 关键词：重载铁路；影响系数；非赫兹接触；Archard 磨耗模型 中图分类号：U211 Influence of Curve Superelevation of Heavy Haul Railway on Rail Wear Based on Revised Wheel/Rail Non-Hertz Contact YANG Xinwen YAO Yiming ZHOU Shunhua LIAN Songliang (Key Laboratory of Road and Traffic Engineering of Ministry of Education, Tongji University, Shanghai 201804) Abstract ：In order to investigate the effect of curve superelevation on rail wear of heavy haul railway, a finite element method is used to solve the wheel/rail normal contact influence coefficient, and a detail model is established to predict and analyze the rail wear. The model includes vehicle-track coupled dynamics model, the revised wheel/rail non Hertz normal contact model, wheel/rail tangential contact model and the Archard wear model, and verifies the correctness of the prediction model with field measurement. The model is used to calculate the influence of the curve superelevation on rail wear in heavy haul railway. The results show that:(1) under the conditions of curve radius 450m at a vehicle speed of 60km/h, the side wear of higher rail is greater than the