Numerical analysis on the dynamic contact behavior of hydrodynamic journal bearings during start-up

被引：53

作者：

Cui, Shuhui ^{[1
]}

Gu, Le ^{[1
]}

Wang, Liqin ^{[1
,2
]}

Xu, Bo ^{[3
]}

Zhang, Chuanwei ^{[1
]}

机构：

[1] Harbin Inst Technol, MIIT Key Lab Aerosp Bearing Technol & Equipment, Harbin 150001, Heilongjiang, Peoples R China

[2] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150080, Heilongjiang, Peoples R China

[3] Harbin Marine Boiler & Turbine Res Inst, Harbin 150036, Heilongjiang, Peoples R China

来源：

TRIBOLOGY INTERNATIONAL | 2018年 / 121卷

基金：

中国国家自然科学基金;

关键词：

Journal bearing; Start-up; Asperity contact; Mixed lubrication; MIXED-TEHD MODEL; LUBRICATION; FRICTION; WEAR; PERFORMANCE; SIMULATION;

D O I：

10.1016/j.triboint.2018.01.059

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The dynamic contact behavior of hydrodynamic journal bearings during start-up is investigated. The hydrodynamic oil force and asperity contact force are obtained by solving the mixed lubrication model. The motion of the journal center, the contact time, and the lift-off speed of the bearing are determined. The effects of the relative clearance and acceleration time are discussed. The result shows that the hydrodynamic oil force increases sharply during the early stage of the start-up process, leading to a sharp decrease in the contact force. An increase in the relative clearance of the bearing generates a decrease in both the contact force and the contact time. Also, a high start-up acceleration leads to a sharp decrease in the contact force.

引用

页码：260 / 268

页数：9

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