西南交通大学学报2024，Vol.59Issue(5)：1034-1042,9.DOI:10.3969/j.issn.0258-2724.20220392
实测轮轨蠕滑曲线对钢轨磨耗影响分析
Effect of Measured Wheel-Rail Creep Curves on Rail Wear
摘要
Abstract
The wheel-rail creep curve influences dynamic wheel-rail interaction,which further affects rail wear.To study the effect of the measured wheel-rail creep curve on rail wear,parameters suitable for the Polach model and modified FASTSIM algorithm were obtained based on the least square method,and measured creep curves at the running speed of 40-400 km/h of the vehicle were simulated.After that,the vehicle system dynamics model was established in the SIMPACK,and measured creep curves were considered through the Polach model.Finally,the Kik-Piotrowski model and modified FASTSIM algorithm were used to calculate the non-Hertzian rolling contact,and rail wear was predicted by the USFD model.The discrepancies of rail wear under ideal and measured creep curves were compared.The research shows that the rail wear depth under the ideal creep curve is more obvious than that under the measured creep curve.As more vehicles pass the rail,the rail wear distribution range under ideal conditions is larger,and the distribution ranges of inner and outer rail are respectively 1.5 and 1.3 times those under the measured creep curve;the friction coefficient and wear rate significantly influence the magnitude and distribution range of rail wear,so it is necessary to consider the measured wheel-rail creep curve in vehicle dynamics simulation and rail wear calculation.A pre-processing program is developed to determine parameters of the measured creep curve,which can serve for vehicle dynamics simulation and rail wear calculation and effectively guide maintenance work such as rail grinding.关键词
蠕滑曲线/数值模拟/车辆系统动力学模型/钢轨磨耗/接触斑Key words
creep curve/numerical simulation/vehicle system dynamics model/rail wear/contact patch分类
交通工程引用本文复制引用
王平,宋娟,杨春凯,安博洋,陈嵘..实测轮轨蠕滑曲线对钢轨磨耗影响分析[J].西南交通大学学报,2024,59(5):1034-1042,9.基金项目
国家自然科学基金项目(52108418,U1934214) （52108418,U1934214）
中央高校基本科研业务费(2682021CX016) （2682021CX016）
四川省杰出青年科技人才项目(2020JDJQ0033) （2020JDJQ0033）
