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。
杨新文
,
姚一鸣
,
周顺华
,
练松良
. 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[J]. 机械工程学报, 2018
, 54(4)
: 22
-29
.
DOI: 10.3901/JME.2018.04.022
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 vertical wear; (2) with the wheel passing weight increasing, the development of wear width and vertical wear are stepped up, and the wear width increases rapidly in the early phase, then tends to be stable; (3) under the conditions of superelevation of 0.05m, 0.07m, 0.09m and curve radius 1000m, the higher rail's wear increase, whereas the lower rail's wear decreased, which is because the effect of lateral displacement of wheelset is more significant than that of wheel/rail normal force on rail wear.
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