A Simplified Non-Hertzian Wheel-Rail Adhesion Model Under Interfacial Contaminations Considering Surface Roughness

IF 1.8 4区工程技术 Q3 ENGINEERING, CHEMICAL Lubrication Science Pub Date : 2024-10-27 DOI:10.1002/ls.1726

Zhaoyang Wang, Bing Wu, Jiaqing Huang

{"title":"A Simplified Non-Hertzian Wheel-Rail Adhesion Model Under Interfacial Contaminations Considering Surface Roughness","authors":"Zhaoyang Wang, Bing Wu, Jiaqing Huang","doi":"10.1002/ls.1726","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>The accuracy and efficiency of the wheel-rail adhesion model are important to the wheel-rail rolling contact issues. The purpose of this study is to develop a simplified non-Hertzian wheel-rail adhesion model under interfacial contaminations to predict the wheel-rail adhesion coefficient. Firstly, a non-Hertzian full elasto-hydrodynamic lubrication (EHL) model was developed and applied to determine the wheel-rail contact pressure and film thickness under interfacial contaminations. Then, the empirical formula of central film thickness available to non-Hertzian wheel-rail normal contact relating to train speeds, axle loads and material parameters were proposed based on a large number of non-Hertzian full EHL simulation for smooth surface under interfacial contaminations using linear regression. The empirical non-Hertzian central film thickness formula and minimum film thickness formula for wheel-rail contact obtained in this paper show certain differences from the formulas based on Hertzian contact. Using the proposed non-Hertzian central film thickness formula, a simplified non-Hertzian wheel-rail contact adhesion model was developed, and the adhesion coefficient was obtained at different speeds and compared with the field test data. The numerical results showed good agreement with field test data.</p>\n </div>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"37 1","pages":"105-116"},"PeriodicalIF":1.8000,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lubrication Science","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ls.1726","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The accuracy and efficiency of the wheel-rail adhesion model are important to the wheel-rail rolling contact issues. The purpose of this study is to develop a simplified non-Hertzian wheel-rail adhesion model under interfacial contaminations to predict the wheel-rail adhesion coefficient. Firstly, a non-Hertzian full elasto-hydrodynamic lubrication (EHL) model was developed and applied to determine the wheel-rail contact pressure and film thickness under interfacial contaminations. Then, the empirical formula of central film thickness available to non-Hertzian wheel-rail normal contact relating to train speeds, axle loads and material parameters were proposed based on a large number of non-Hertzian full EHL simulation for smooth surface under interfacial contaminations using linear regression. The empirical non-Hertzian central film thickness formula and minimum film thickness formula for wheel-rail contact obtained in this paper show certain differences from the formulas based on Hertzian contact. Using the proposed non-Hertzian central film thickness formula, a simplified non-Hertzian wheel-rail contact adhesion model was developed, and the adhesion coefficient was obtained at different speeds and compared with the field test data. The numerical results showed good agreement with field test data.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

考虑表面粗糙度的接触面污染下的简化非赫兹轮轨黏附模型

轮轨黏附模型的准确性和有效性对轮轨滚动接触问题具有重要意义。本研究的目的是建立一个简化的接触面污染下的非赫兹轮轨黏附模型来预测轮轨黏附系数。首先，建立了非赫兹全弹性流体动力润滑模型，并应用该模型计算了接触面污染条件下轮轨接触压力和油膜厚度。在此基础上，利用线性回归方法对光滑表面进行了大量非赫兹全EHL模拟，得到了非赫兹轮轨法向接触时可用的中心膜厚度与列车速度、轴重和材料参数的关系。本文得到的轮轨接触经验非赫兹中心膜厚度公式和最小膜厚度公式与基于赫兹接触的公式存在一定的差异。利用提出的非赫兹中心膜厚度公式，建立了简化的非赫兹轮轨接触黏附模型，得到了不同速度下的黏附系数，并与现场试验数据进行了对比。数值计算结果与现场试验数据吻合较好。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

Lubrication Science ENGINEERING, CHEMICAL-ENGINEERING, MECHANICAL

CiteScore

3.60

自引率

10.50%

发文量

审稿时长

6.8 months

期刊介绍： Lubrication Science is devoted to high-quality research which notably advances fundamental and applied aspects of the science and technology related to lubrication. It publishes research articles, short communications and reviews which demonstrate novelty and cutting edge science in the field, aiming to become a key specialised venue for communicating advances in lubrication research and development. Lubrication is a diverse discipline ranging from lubrication concepts in industrial and automotive engineering, solid-state and gas lubrication, micro & nanolubrication phenomena, to lubrication in biological systems. To investigate these areas the scope of the journal encourages fundamental and application-based studies on: Synthesis, chemistry and the broader development of high-performing and environmentally adapted lubricants and additives. State of the art analytical tools and characterisation of lubricants, lubricated surfaces and interfaces. Solid lubricants, self-lubricating coatings and composites, lubricating nanoparticles. Gas lubrication. Extreme-conditions lubrication. Green-lubrication technology and lubricants. Tribochemistry and tribocorrosion of environment- and lubricant-interface interactions. Modelling of lubrication mechanisms and interface phenomena on different scales: from atomic and molecular to mezzo and structural. Modelling hydrodynamic and thin film lubrication. All lubrication related aspects of nanotribology. Surface-lubricant interface interactions and phenomena: wetting, adhesion and adsorption. Bio-lubrication, bio-lubricants and lubricated biological systems. Other novel and cutting-edge aspects of lubrication in all lubrication regimes.

期刊最新文献

Issue Information Issue Information A Simplified Non-Hertzian Wheel-Rail Adhesion Model Under Interfacial Contaminations Considering Surface Roughness Enhancing Lubrication Performance of Ga–In–Sn Liquid Metal via Electrochemical Boronising Treatment Issue Information