Transient mixed thermal elastohydrodynamic lubrication analysis of aero ball bearing under non-steady state conditions

被引：0
|
作者：
Wu, Jiqiang [1 ]
He, Tao [2 ]
Wang, Dandan [3 ]
Wang, Liqin [1 ]
Jiang, Shengyuan [4 ]
Wang, Yaqian [1 ]
Chen, Kang [1 ]
Zhang, Chuanwei [1 ]
Shu, Kun [1 ,5 ]
Li, Zhen [1 ]
机构：
[1] Harbin Inst Technol, Sch Mechatron Engn, Harbin 150001, Peoples R China
[2] Sun Yat Sen Univ, Sch Intelligent Syst Engn, Shenzhen Campus, Shenzhen 518107, Peoples R China
[3] Aero Engine Corp China, Key Lab Power Transmiss Technol Aero Engine, Shenyang 110015, Peoples R China
[4] Harbin Inst Technol, State Key Lab Robot & Syst, Harbin 150001, Peoples R China
[5] Harbin Inst Technol, Zhengzhou Res Inst, Zhengzhou 450046, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2025年 / 202卷
基金：
中国国家自然科学基金;
关键词：
Aero ball bearing; Non-steady state conditions; Dynamic characteristics; Transient mixed thermal elastohydrodynamic; lubrication; FULL NUMERICAL-SOLUTION; FINITE LINE CONTACT; HIGH-SPEED; DISCRETE CONVOLUTION; RAPID DECELERATION; FILM BEHAVIOR; PART I; PRESSURE; DYNAMICS; COLLAPSE;
D O I：
10.1016/j.triboint.2024.110342
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A transient mixed thermal elastohydrodynamic lubrication model of bearing considering the thermal effect and the changes in velocity, load, and contact geometry is proposed. Based on the bearing dynamic and lubrication analysis, the effects of bearing rotational speed and start-stop conditions on the dynamic behavior and lubrication performance are studied. Results show that when the bearing rotational speed exceeds a certain critical value, the increasing speed will reduce the film thickness, especially the outer raceway. The increasing bearing acceleration can cause a higher slide-roll ratio and film temperature at the initial start-up process. Compared with the start-up process, the lubrication change in the shut-down process has a similar opposite trend, but the overall lubrication performance is better.
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页数：16
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