Grease film evolution in rolling elastohydrodynamic lubrication contacts

被引：33

作者：

Li, Xinming ^{[1
]}

Guo, Feng ^{[1
]}

Poll, Gerhard ^{[2
]}

Fei, Yang ^{[1
]}

Yang, Ping ^{[1
]}

机构：

[1] Qingdao Univ Technol, Sch Mech & Automot Engn, Qingdao 266250, Peoples R China

[2] Leibniz Univ Hannover, Inst Machine Design & Tribol, D-30167 Hannover, Germany

来源：

FRICTION | 2021年 / 9卷 / 01期

基金：

中国国家自然科学基金;

关键词：

grease lubrication; rolling contacts; starvation; replenishment; elastohydrodynamic lubrication (EHL); REPLENISHMENT; BEHAVIOR; STARVATION; THICKNESS; FLOW; PREDICTION;

D O I：

10.1007/s40544-020-0381-4

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Although most rolling element bearings are grease lubricated, the underlying mechanisms of grease lubrication has not been fully explored. This study investigates grease film evolution with glass disc revolutions in rolling elastohydrodynamic lubrication (EHL) contacts. The evolution patterns of the grease films were highly related to the speed ranges and grease structures. The transference of thickener lumps, film thickness decay induced by starvation, and residual layer were recognized. The formation of an equilibrium film determined by the balance of lubricant loss and replenishment was analyzed. The primary mechanisms that dominate grease film formation in different lubricated contacts were clarified.

引用

页码：179 / 190

页数：12

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