QQ客服 官方微博 反馈留言

	The investigation of contact ratio in mixed lubrication
	Luo, JB ; Liu, S
	2010-05-10 ; 2010-05-10
会议名称	TRIBOLOGY INTERNATIONAL ; German/Russian Workshop on Development of Surface Topography in Friction Processes ; Berlin, GERMANY ; Web of Science
关键词	measurement of contact ratio mixed lubrication thin film lubrication SURFACE-ROUGHNESS FILM THICKNESS LINE CONTACTS NANO-SCALE EHL COMPUTATION VISCOSITY Engineering, Mechanical
中文摘要	In order to describe the mixed lubrication in nano-scale which is constituted from dry friction, boundary lubrication, and thin film lubrication, a contact ratio between surfaces of a glass disk and a steel ball in a pure rolling process has been measured by the technique of Relative Optical Interference Intensity (ROII) with a resolution of 0.5 nm in the vertical direction and 1 mu m in the horizontal direction. The relationships between the contact ratio and its influence factors have been investigated. Experimental results indicate that the contact ratio in the static state is related to the combined surface roughness, maximum Hertz pressure, and the combined elastic module of tribo-pair in an exponential function. The decrease of rolling speed or lubricant viscosity, and the increase of the pressure will enhance the dynamic contact ratio which is the contact ratio measured in the rolling process. The addition of polar additives into basic oil will reduce the contact ratio. The contact ratio between rough surfaces is larger than that between smooth surfaces in the higher speed region. However, the former becomes smaller than the later after speed decreases below a critical value. A formula for calculating the dynamic contact ratio is given in the end of the paper. (c) 2005 Elsevier Ltd. All rights reserved.; Bewrlin Technol Univ
会议录出版者	ELSEVIER SCI LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19315]
专题	清华大学
推荐引用方式 GB/T 7714	Luo, JB,Liu, S. The investigation of contact ratio in mixed lubrication[C]. 见:TRIBOLOGY INTERNATIONAL, German/Russian Workshop on Development of Surface Topography in Friction Processes, Berlin, GERMANY, Web of Science.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。