Mechanisms of Rolling Contact Fatigue in Lubricated Rolling Contacts
润滑滚动接触中的滚动接触疲劳机制
基本信息
- 批准号:2168744
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:英国
- 项目类别:Studentship
- 财政年份:2017
- 资助国家:英国
- 起止时间:2017 至 无数据
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The project aims to provide improved understanding of surface initiated rolling contact fatigue (RCF) damage in rolling/sliding lubricated contacts. This has applications to a wide range of mechanical components including rolling element bearing and gears. RCF manifests itself as pitting or micropitting surface failures. With current trends for use of lower viscosity lubricating oils and increased power density of machines, tribological contacts in engineering applications are having to operate under relatively thin lubricant films leading to increased amount of metal-to-metal contact and hence more surface initiated fatigue damage. Therefore, the focus of this research is on surface initiated RCF cracks which occur at asperity contact level, as opposed to macro-contact level, and commonly lead to microptting damage. The project utilises a triple-disc RCF test machine to generate surface fatigue damage and study the influence of parameters including material, surface finish, slide-roll ratio and contact pressure under controlled contact conditions. This will in turn provide the understanding needed to improve our predictive tools of this type of damage, and the later stages of the project will attempt to utilise our exiting contact mechanics models and the knowledge generated in these experiments to provide numerical predictions of crack initiation and subsequent progression of surface fatigue damage.
该项目旨在提高对滚动/滑动润滑接触中表面引发的滚动接触疲劳(RCF)损伤的理解。这适用于广泛的机械部件,包括滚动元件轴承和齿轮。RCF表现为点蚀或微点蚀表面失效。随着目前使用低粘度润滑油的趋势和机器功率密度的增加,工程应用中的摩擦学接触不得不在相对较薄的润滑膜下工作,导致金属与金属接触的数量增加,从而导致更多的表面疲劳损伤。因此,本研究的重点是表面引发的RCF裂纹,这种裂纹发生在粗糙接触水平,而不是宏观接触水平,通常会导致微蚀损伤。本项目利用三盘RCF试验机产生表面疲劳损伤,研究受控接触条件下材料、表面光洁度、滑辊比、接触压力等参数对表面疲劳损伤的影响。这将反过来为改进我们对这类损伤的预测工具提供所需的理解,项目的后期阶段将尝试利用我们现有的接触力学模型和这些实验中产生的知识来提供裂纹起裂和随后表面疲劳损伤进展的数值预测。
项目成果
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其他文献
吉治仁志 他: "トランスジェニックマウスによるTIMP-1の線維化促進機序"最新医学. 55. 1781-1787 (2000)
Hitoshi Yoshiji 等:“转基因小鼠中 TIMP-1 的促纤维化机制”现代医学 55. 1781-1787 (2000)。
- DOI:
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LiDAR Implementations for Autonomous Vehicle Applications
- DOI:
- 发表时间:
2021 - 期刊:
- 影响因子:0
- 作者:
- 通讯作者:
吉治仁志 他: "イラスト医学&サイエンスシリーズ血管の分子医学"羊土社(渋谷正史編). 125 (2000)
Hitoshi Yoshiji 等人:“血管医学与科学系列分子医学图解”Yodosha(涉谷正志编辑)125(2000)。
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Effect of manidipine hydrochloride,a calcium antagonist,on isoproterenol-induced left ventricular hypertrophy: "Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,K.,Teragaki,M.,Iwao,H.and Yoshikawa,J." Jpn Circ J. 62(1). 47-52 (1998)
钙拮抗剂盐酸马尼地平对异丙肾上腺素引起的左心室肥厚的影响:“Yoshiyama,M.,Takeuchi,K.,Kim,S.,Hanatani,A.,Omura,T.,Toda,I.,Akioka,
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