|
|||||
|
|
| 圆柱滚子轴承混合润滑状态下的超声法膜厚测量 | |
| 引用本文： | 李猛,田桂斌,刘意,刘恒,戚社苗,宋海涛,姬传义.圆柱滚子轴承混合润滑状态下的超声法膜厚测量[J].振动与冲击,2020,39(10):279-284. |
| 作者姓名： | 李猛 田桂斌 刘意 刘恒 戚社苗 宋海涛 姬传义 |
| 作者单位： | 1.长安大学 汽车学院,西安710064； 2.西安交通大学 机械工程学院,西安710049； 3.洛阳LYC轴承有限公司，河南 洛阳471039； 4.航空精密轴承国家重点实验室，河南 洛阳471039； 5.北京航天自动控制研究所，北京100854 |
| 基金项目： | 国家重点研发计划(2018YFB2000200);中国博士后基金项目(2019M662503);中央高校基本科研业务费资助项目(300102228104);国家自然科学基金(51705399)。 |
| 摘 要： | 圆柱滚子轴承由于其线接触特点被广泛应用于各类低速重载工况下的大型设备中,其运行性能和稳定性与滚子和内外圈间的接触润滑状态密切相关;基于等效刚度的超声法可用于实际工况的滚子轴承弹流润滑油膜厚度测量,但无法直接适用于低速重载工况下流体润滑和粗糙峰接触共存的混合润滑状态膜厚测量。为此,提出了一种混合润滑状态下的超声测量方法,建立了界面油膜刚度和粗糙体接触刚度的并联模型,通过引入接触系数并结合经验公式对超声法所测界面总刚度进行分解,获取混合润滑状态下的油膜刚度,进而得到更加准确的油膜厚度。将实验结果和理论结果的对比分析,验证了该模型的可行性和有效性。 |
| 关 键 词： | 圆柱滚子轴承 混合润滑 超声测量 接触系数 油膜厚度 |
Ultrasonic measurement of oil film thickness in cylindrical roller bearings under mixed lubrication |
|
| LI Meng,TIAN Guibin,LIU Yi,LIU Heng,QI Shemiao,SONG Haitao,JI Chuanyi.Ultrasonic measurement of oil film thickness in cylindrical roller bearings under mixed lubrication[J].Journal of Vibration and Shock,2020,39(10):279-284. | |
| Authors: | LI Meng TIAN Guibin LIU Yi LIU Heng QI Shemiao SONG Haitao JI Chuanyi |
| Affiliation: | 1.School of Automobile, Chang’an University, Xi’an 710064, China; 2.College of Mechanical Engineering, Xi’an Jiaotong University, Xi’an 710049,China； 3.Luoyang LYC Bearing Co.,Ltd., Luoyang 471039, China; 4.State Key Laboratory of Aerospace Precision Bearings, Luoyang 471039,China; 5.Beijing Aerospace Automatic Control Institute, Beijing 100854,China |
| Abstract: | Cylindrical roller bearings are widely used in various types of large equipment under low speed and heavy load conditions due to their linear contact characteristics.Their operating performance and stability are closely related to the contact lubrication state between rollers and the inner or outer rings.The ultrasonic method based on equivalent stiffness can be used to measure the thickness of elastohydrodynamic lubrication film of roller bearings under actual working conditions.But it cannot be directly applied to the measurement of oil film thickness in mixed lubrication state under low speed and heavy load conditions.Therefore, an ultrasonic measurement method under mixed lubrication was proposed in this paper, and the parallel model of interface oil film stiffness and rough body contact stiffness was established.By introducing the contact coefficient and combining with the empirical formula, the total interface stiffness measured by ultrasonic method was decomposed to get the oil film stiffness under mixed lubrication state.Then a more accurate oil film thickness was obtained.Finally, through comparing the experimental and theoretical results, the feasibility and validity of the proposed model were verified. |
| Keywords: | cylindrical roller bearing mixed lubrication ultrasonic measurement contact coefficient oil film thickness |
| 本文献已被 CNKI 维普 等数据库收录！ | |
| 点击此处可从《振动与冲击》浏览原始摘要信息 | |
| 点击此处可从《振动与冲击》下载全文 | |