A thermo-elastic-hydrodynamic model for air foil thrust bearings considering thermal seizure and failure analyses

被引：14
|
作者：
Xiong, Cheng [1 ]
Xu, Bo [1 ]
Yu, Huanchun [2 ]
Huang, Zhongwen [2 ]
Chen, Zhenqian [1 ]
机构：
[1] Southeast Univ, Sch Energy & Environm, Key Lab Energy Thermal Convers & Control, Minist Educ, Nanjing 210096, Peoples R China
[2] AVIC Nanjing Engn Inst Aircraft Syst, Nanjing 211106, Peoples R China
来源：
TRIBOLOGY INTERNATIONAL | 2023年 / 183卷
基金：
中国国家自然科学基金;
关键词：
Thermo-elastic-hydrodynamic; Thermal failure; Foil thrust bearing; Gas lubrication; YOUNGS MODULUS; SHEAR MODULUS; PERFORMANCE; COATINGS; DESIGN;
D O I：
10.1016/j.triboint.2023.108373
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This study aims to investigate the thermo-elastic performance of an air-lubricated thrust bearing under the thermal failure effect. A thermo-elastic-hydrodynamic model was established using temperature-dependent alloy material properties. The thermo-elastic deformation characteristics were analyzed based on the fluid-thermal -structure interaction approach. The mechanisms of bearing thermal seizures and failure behavior were stud-ied. The results show that the rotor thermal warping deformation at low rotating speed plays a leading role in the increase of the film thickness. The rotor-foil thermal seizure occurs in a high rotating speed. The additional forced cooling conditions effectively reduce the risk of thermal failure.
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页数：11
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