层叠式推力箔片轴承试验台设计及静特性试验

张广辉; 徐科繁; 韩佳真; 黄钟文; 吉世伟

doi:10.13224/j.cnki.jasp.20230050

层叠式推力箔片轴承试验台设计及静特性试验

doi: 10.13224/j.cnki.jasp.20230050

1.
哈尔滨工业大学能源科学与工程学院，哈尔滨 150001
2.
中国航空工业集团有限公司金城南京机电液压工程研究中心，南京 211106

基金项目: 国家科技重大专项（2017-Ⅳ-0008-0045）

详细信息

作者简介:
张广辉（1982-），男，教授、博士生导师，博士，主要从事转子动力学研究。E-mail：zhanggh@hit.edu.cn

中图分类号: V245.3
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- 文章访问数: 490
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- 被引次数: 0
出版历程
- 收稿日期: 2023-02-03
- 网络出版日期: 2025-05-19

Test-rig design and static characteristic tests of multi-layer thrust foil bearing

1.
School of Energy Science and Engineering，Harbin Institute of Technology，Harbin 150001，China
2.
Jincheng Nanjing Engineering Institute of Aircraft Systems，Aviation Industry Corporation of China，Limited，Nanjing 211106，China

摘要

摘要:
为获取轴承特性变化规律，设计并搭建了可动静同步轴向加载的推力气体箔片轴承试验台，针对具有三层箔片结构的层叠式推力箔片轴承，依次开展了静刚度试验、起飞转速试验、极限承载试验等静特性试验。研究结果表明：基于空心轴设计的多段转轴可同时传递动静载荷，有助于获取推力轴承动态特性；库伦摩擦效应导致被测轴承静刚度随载荷呈非线性变化，基于试验数据拟合得到的刚度表达式有助于相关工程设计；高轴承数下轴承动压效应更为显著，因此轴承起飞转速随预载荷单调增加，极限承载随转速单调增加。
- 层叠式推力箔片轴承 /
- 多段转轴设计 /
- 静刚度 /
- 起飞转速 /
- 极限承载
Abstract:
A thrust gas foil bearing test rig with dynamic and static synchronous axial loading was designed and built to obtain the variation rule of bearing characteristics. For the multi-layer thrust foil bearing with a three-layer foil structure, the static stiffness tests, lift-off speed tests, and ultimate load capacity tests were carried out successively. The results showed that the multi-section rotating shaft based on the hollow shaft design can simultaneously transfer the dynamic and static loads, helping obtain the dynamic characteristics of thrust bearings. The Coulomb friction effect resulted in the nonlinear change of the static stiffness of the bearing under test with the load, and the stiffness expression based on the fitting of test data could contribute to the relevant engineering design. The bearing dynamic pressure effect was more significant under a high bearing number, so the bearing lift-off speed increased monotonically with the preload, and the ultimate load capacity increased monotonically with speed.
- multi-layer thrust foil bearing /
- multi-section shaft design /
- static stiffness /
- lift-off speed /
- ultimate load capacity

HTML

图 1 推力箔片轴承试验台

Figure 1. Thrust foil bearing test rig

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图 2 层叠式推力箔片轴承

Figure 2. Multi-layer thrust foil bearing

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图 3 多段转轴设计示意图

Figure 3. Schematic diagram of the design of multi-axis

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图 4 静刚度试验时域数据

Figure 4. Time-domain data of static stiffness test

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图 5 层叠式推力箔片轴承静刚度试验数据

Figure 5. Static stiffness test data of multi-layer thrust foil bearing

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图 6 起飞转速试验时频数据

Figure 6. Time-frequency data of lift-off speed test

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图 7 不同预载荷下的起飞转速数据

Figure 7. Lift-off speed test data under different preloads

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图 8 极限承载试验时域数据

Figure 8. Time-domain data of ultimate load capacity test

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图 9 不同涂层状态下箔片实物图

Figure 9. Physical diagrams of foils under different coating states

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表 1 层叠式箔片轴承参数^[15]

Table 1. Parameters of multi-layer foil bearing^[15]

参数	数值
扇形瓦外径R₂/mm	57.15
扇形瓦内径R₁/mm	29.75
扇形瓦块数N	12
平箔片厚度t_f/mm	0.27
中间板厚度t_m/mm	0.12
支承板高度t_s/mm	0.8
箔片弹性模量E/10¹¹ Pa	2.1
箔片泊松比ν	0.3

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表 2 不同转速下层叠式推力箔片轴承极限承载数据

Table 2. Ultimate load capacity test data of multi-layer thrust foil bearing under different rotational speeds

转速/（r/min）	极限承载/N
9000	162.7
9600	196.5
10100	192.3
11100	217.6

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