使用考虑表面粗糙度和温度的简化三维模型对轮轨附着力进行数值研究

IF 1.8 4区工程技术 Q3 ENGINEERING, CHEMICAL

Lubrication Science Pub Date : 2023-09-17 DOI:10.1002/ls.1677

Jiaqing Huang, Bing Wu, Guangwen Xiao, Quan Shen

{"title":"使用考虑表面粗糙度和温度的简化三维模型对轮轨附着力进行数值研究","authors":"Jiaqing Huang, Bing Wu, Guangwen Xiao, Quan Shen","doi":"10.1002/ls.1677","DOIUrl":null,"url":null,"abstract":"<p>Wheel-rail adhesion is important to the traction and braking of railway vehicles. This paper develops a three-dimensional numerical model considering surface roughness and temperature to investigate water-contaminated adhesion characteristics. A simplified elastohydrodynamic lubrication model considering the thermal effect is developed to obtain the normal load carried by liquid film and asperities. Meanwhile, a third body layer (3BL) model, which considers the effects of pressure and temperature on 3BL, is used to calculate the tangential stress and friction coefficient of asperity contact. To verify the numerical model, firstly, the results are compared with the existing experimental results at low and high speeds. In addition, the effects of surface roughness and temperature on adhesion coefficient are investigated. Furthermore, the elastoplastic behaviour of the tangential stress and the adhesion characteristics for large creepages are studied. The obtained adhesion-creepage curve can represent the decreasing trend after reaching saturation because of temperature.</p>","PeriodicalId":18114,"journal":{"name":"Lubrication Science","volume":"36 2","pages":"88-103"},"PeriodicalIF":1.8000,"publicationDate":"2023-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Numerical investigation of wheel-rail adhesion using a simplified three-dimensional model considering surface roughness and temperature\",\"authors\":\"Jiaqing Huang, Bing Wu, Guangwen Xiao, Quan Shen\",\"doi\":\"10.1002/ls.1677\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Wheel-rail adhesion is important to the traction and braking of railway vehicles. This paper develops a three-dimensional numerical model considering surface roughness and temperature to investigate water-contaminated adhesion characteristics. A simplified elastohydrodynamic lubrication model considering the thermal effect is developed to obtain the normal load carried by liquid film and asperities. Meanwhile, a third body layer (3BL) model, which considers the effects of pressure and temperature on 3BL, is used to calculate the tangential stress and friction coefficient of asperity contact. To verify the numerical model, firstly, the results are compared with the existing experimental results at low and high speeds. In addition, the effects of surface roughness and temperature on adhesion coefficient are investigated. Furthermore, the elastoplastic behaviour of the tangential stress and the adhesion characteristics for large creepages are studied. The obtained adhesion-creepage curve can represent the decreasing trend after reaching saturation because of temperature.</p>\",\"PeriodicalId\":18114,\"journal\":{\"name\":\"Lubrication Science\",\"volume\":\"36 2\",\"pages\":\"88-103\"},\"PeriodicalIF\":1.8000,\"publicationDate\":\"2023-09-17\",\"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.1677\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lubrication Science","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/ls.1677","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

摘要

轮轨附着力对铁路车辆的牵引和制动非常重要。本文建立了一个考虑到表面粗糙度和温度的三维数值模型，以研究水污染的附着特性。建立了一个考虑热效应的简化弹性流体动力润滑模型，以获得液膜和凸面所承受的法向载荷。同时，第三体层（3BL）模型考虑了压力和温度对 3BL 的影响，用于计算非晶体接触的切向应力和摩擦系数。为了验证数值模型，首先将结果与现有的低速和高速实验结果进行了比较。此外，还研究了表面粗糙度和温度对粘附系数的影响。此外，还研究了切向应力的弹塑性行为和大蠕变时的粘附特性。所获得的附着力-蠕变曲线可以表现出在达到饱和后由于温度的影响而逐渐减小的趋势。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Numerical investigation of wheel-rail adhesion using a simplified three-dimensional model considering surface roughness and temperature

Wheel-rail adhesion is important to the traction and braking of railway vehicles. This paper develops a three-dimensional numerical model considering surface roughness and temperature to investigate water-contaminated adhesion characteristics. A simplified elastohydrodynamic lubrication model considering the thermal effect is developed to obtain the normal load carried by liquid film and asperities. Meanwhile, a third body layer (3BL) model, which considers the effects of pressure and temperature on 3BL, is used to calculate the tangential stress and friction coefficient of asperity contact. To verify the numerical model, firstly, the results are compared with the existing experimental results at low and high speeds. In addition, the effects of surface roughness and temperature on adhesion coefficient are investigated. Furthermore, the elastoplastic behaviour of the tangential stress and the adhesion characteristics for large creepages are studied. The obtained adhesion-creepage curve can represent the decreasing trend after reaching saturation because of temperature.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。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.