Dynamic Characteristic Analysis of Elastic Support and Squeeze Film Damper Cylindrical Roller Bearing under Unsteady Condition

Yulei Xia; Yongcun Cui; Xiaofang Jia; Kaiwen Deng; Si'er Deng

doi:10.16578/j.issn.1004.2539.2021.09.018

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Dynamic Characteristic Analysis of Elastic Support and Squeeze Film Damper Cylindrical Roller Bearing under Unsteady Condition

Test·Analysis | 更新时间：2022-11-10

- Dynamic Characteristic Analysis of Elastic Support and Squeeze Film Damper Cylindrical Roller Bearing under Unsteady Condition
- Journal of Mechanical Transmission Vol. 45, Issue 9, Pages: 119-125(2021)
- 作者机构：
  
  1.河南科技大学机电工程学院，河南洛阳 471003
  2.八环科技集团股份有限公司博士后工作站，浙江台州 318000
  3.辽宁重大装备制造协同创新中心，辽宁大连 116024
  4.高端轴承摩擦学技术与应用国家地方联合工程实验室，河南洛阳 471023
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2021.09.018
  CLC：
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夏玉磊,崔永存,贾晓芳等.非稳态工况下弹支SFD圆柱滚子轴承动态特性分析[J].机械传动,2021,45(09):119-125.

Xia Yulei,Cui Yongcun,Jia Xiaofang,et al.Dynamic Characteristic Analysis of Elastic Support and Squeeze Film Damper Cylindrical Roller Bearing under Unsteady Condition[J].Journal of Mechanical Transmission,2021,45(09):119-125.
夏玉磊,崔永存,贾晓芳等.非稳态工况下弹支SFD圆柱滚子轴承动态特性分析[J].机械传动,2021,45(09):119-125. DOI： 10.16578/j.issn.1004.2539.2021.09.018.

Xia Yulei,Cui Yongcun,Jia Xiaofang,et al.Dynamic Characteristic Analysis of Elastic Support and Squeeze Film Damper Cylindrical Roller Bearing under Unsteady Condition[J].Journal of Mechanical Transmission,2021,45(09):119-125. DOI： 10.16578/j.issn.1004.2539.2021.09.018.

摘要

航空发动机主轴系统中滚动轴承常与弹性支承和挤压油膜阻尼器（Squeeze film damper，SFD）联合使用，以降低转子的振动。由于支承方式的改变，轴承的运动状态发生较大的变化。基于滚动轴承动力学理论和模态综合法，建立了弹支SFD圆柱滚子轴承-刚性转子刚柔耦合动力学分析模型，开展了转子不平衡量产生的非稳态载荷对弹支SFD圆柱滚子轴承动态特性的影响研究。结果表明，非稳态工况下，弹支SFD圆柱滚子轴承保持架打滑率表现出明显的波动；挤压油膜阻尼器结构参数对轴承承载和打滑特性有不同程度的影响；周期性的时变载荷使保持架打滑增大且打滑率呈现无规则波动。

Abstract

The bearing in the main shaft system of the aero-engine is often used in combination with elastic support and squeeze film damper （SFD） to reduce vibration. And this will affect the motion state of the bearing due to the change of the supporting mode. Based on the dynamics theory of rolling bearing and the modal synthesis method， a bearing/rigid rotor model supported by the cylindrical roller bearing with elastic support and squeeze film damper is established. It is used to study the influence of unsteady load caused by rotor unbalance on dynamics characteristics of the bearing. The results show that the skidding rate of the cage shows obvious fluctuation characteristics when the unbalance causes the bearing under unsteady conditions. The squeeze oil damper has a certain influence on the bearing loads and skidding characteristics. The skidding rate of cage increases and presents irregular fluctuations due to the periodic time-varying load.

关键词

轴承动力学弹性支承挤压油膜阻尼器轴承动态特性

Keywords

Bearing dynamicsElastic supportSqueeze film damperBearing dynamic characteristic

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