Tapered Roller Bearing Rib-Roller End Interaction at Hydrodynamic Contact

IF 0.5 4区工程技术 Q4 ENGINEERING, MECHANICAL

Journal of Friction and Wear Pub Date : 2023-03-13 DOI:10.3103/S106836662206006X

I. M. Klebanov, A. M. Brazhnikova, K. A. Polyakov

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引用次数: 1

Abstract—

Wear of the contact surfaces is an important characteristic of rib-roller end interaction of roller bearings. The purpose of this study was to develop effective methods for calculating the wear rate of these surfaces under alternating dynamic loads. In wear rate calculations of bearing parts, as a rule, Archard’s law is used since it has been verified in hydrodynamic friction testing of bearing steels. In the paper, based on this law, a direct step-by-step wear rate calculation method for rib-roller end contact at variable loads and sliding speeds is developed. According to it, normal force, sliding velocity, and contact oil film thickness are determined in bearing dynamic modeling, and the finite element method is used to calculate contact pressure fields. A multi-mass bearing dynamic model includes a contact friction model, which allows an adequate description of hydrodynamic contact behavior of solid bodies. Using the bearing life dependence on the oil film parameter and experimentally measured steel bearing wear rates, the dependence of wear coefficient on the oil film parameter is obtained. The direct calculation method involves many computations, which makes the influence of individual factors on wear rate non-obvious. In this regard, a method of wear rate calculation with averaged parameters is also proposed. Using these two methods, rib-roller end wear calculations for a double-row tapered roller bearing are implemented. The spherical shape of the roller end and conical, toroidal convex, and concave shapes of the rib are considered. Comparison of wear rates obtained by the two methods confirms the acceptable accuracy of calculations with averaged parameters. The results in particular demonstrate that a toroidal concave rib surface allows reducing the wear rate up to three times in comparison with the tapered surface.

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圆锥滚子轴承肋-滚子端部流体动力接触的相互作用

接触面磨损是滚子轴承肋-滚子端部相互作用的一个重要特征。本研究的目的是开发有效的方法来计算这些表面在交变动态载荷下的磨损率。在轴承零件磨损率的计算中，一般采用阿卡德定律，因为它已在轴承钢的水动力摩擦试验中得到验证。本文在此基础上，提出了一种变载荷、变滑动速度下肋辊端部接触的直接步进磨损率计算方法。在此基础上，在轴承动力学建模中确定了法向力、滑动速度和接触油膜厚度，并采用有限元法计算了接触压力场。多质量轴承动力学模型包括接触摩擦模型，该模型可以充分描述固体的流体动力接触行为。利用轴承寿命对油膜参数的依赖关系和实验测量的钢轴承磨损率，得到了磨损系数对油膜参数的依赖关系。直接计算法计算量大，个别因素对磨损率的影响不明显。在此基础上，提出了一种基于平均参数的磨损率计算方法。利用这两种方法，实现了双列圆锥滚子轴承肋-滚子端部磨损的计算。考虑了滚轮端部的球形形状和肋部的锥形、环形凸形和凹形。比较两种方法得到的磨损率，证实了平均参数计算的精度是可以接受的。结果特别表明，与锥形表面相比，环形凹肋表面可以将磨损率降低三倍。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.

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