Mathematical Modeling of the Wear Rate of the Friction Pair of a Locomotive Wheel–Rail

IF 0.5 4区工程技术 Q4 ENGINEERING, MECHANICAL

Journal of Friction and Wear Pub Date : 2023-06-22 DOI:10.3103/S1068366623010117

M. G. Shalygin, A. P. Vashchishina

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Abstract—

Using a regression model, the factors influencing the wear rate of the locomotive wheel crest are determined. It has been established that the main factors influencing the wear of the locomotive bandage ridge when the rolling stock enters the curved section of the track are diffusion-active hydrogen and the viscosity of the lubricant material with the additives used. The determining factors of the ridge wear are: Р is the pressure of the ridge on the rail (maximum) on the curved section of the track, K_s is impact strength of soft material (wheel tread), η is dynamic viscosity, τ is shear stress in grease, L is friction trail, V is volume of wear particles, and υ is wear rate. A mathematical model of the wear rate of the locomotive wheel crest in a curved section of the railway track is proposed. The proposed model makes it possible to evaluate the operational properties of the wheel–rail friction pair under study. The modification of the model was carried out based on the test results of the Puma lubricant. It is established that the wear rate of the comb with the Puma lubricant is 2.9703 × 10^–6 m/s. The intensity of the release of diffusionally active hydrogen during tests on the friction path was determined as the ratio of hydrogen release during wear and the friction path and is equal to 0.711 ppm/mm. A comparative analysis of the mathematical model and experimental studies on the wear of the wheel ridge using additives to the lubricant: organosulfate, organophosphorus, and a derivative of the hydroquinone compound, the discrepancy between the empirical and theoretical values of the wear rate is 0.67%. The use of the developed mathematical model allows us to evaluate the process of the wear rate of the locomotive wheel ridge and determine the wear of the ridge during operation, in the future it will allow us to calculate the wear in real conditions and predict the timing of the inter-repair run of the rolling stock.

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机车轮轨摩擦副磨损率的数学建模

摘要利用回归模型确定了机车轮顶磨损率的影响因素。研究结果表明，车辆进入轨道弯曲段时，影响机车带脊磨损的主要因素是扩散活性氢和润滑油材料的粘度。钢轨脊磨损的决定因素为:Р为钢轨在轨道弯曲段上的压力(最大值)，Ks为软质材料(车轮踏面)的冲击强度，η为动粘度，τ为润滑脂中的剪切应力，L为摩擦轨迹，V为磨损颗粒体积，υ为磨损率。提出了机车轮顶在轨道弯曲路段磨损率的数学模型。所提出的模型使评估所研究的轮轨摩擦副的工作特性成为可能。根据彪马润滑油的试验结果，对模型进行了修正。结果表明，使用彪马润滑油后梳子的磨损速率为2.9703 × 10-6 m/s。摩擦路径试验中扩散活性氢释放强度确定为磨损过程中氢释放与摩擦路径的比值，等于0.711 ppm/mm。通过对添加了有机硫酸盐、有机磷和对苯二酚衍生物的润滑油的轮脊磨损的数学模型和实验研究进行对比分析，得出的磨损率的经验值与理论值的差异为0.67%。利用所建立的数学模型，可以对机车轮脊磨损率的变化过程进行评估，确定运行过程中轮脊的磨损情况，将来还可以计算实际工况下的磨损情况，预测车辆间修运行的时机。

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来源期刊

Journal of Friction and Wear ENGINEERING, MECHANICAL-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

1.50

自引率

28.60%

发文量

审稿时长

6-12 weeks

期刊介绍： Journal of Friction and Wear is intended to bring together researchers and practitioners working in tribology. It provides novel information on science, practice, and technology of lubrication, wear prevention, and friction control. Papers cover tribological problems of physics, chemistry, materials science, and mechanical engineering, discussing issues from a fundamental or technological point of view.