Study on the Dynamic Characteristics of Water-Lubricated Rubber Journal Bearing Considering Journal Misalignment

doi:10.7652/xjtuxb202101013

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Study on the Dynamic Characteristics of Water-Lubricated Rubber Journal Bearing Considering Journal Misalignment

更新时间：2025-07-09

- Study on the Dynamic Characteristics of Water-Lubricated Rubber Journal Bearing Considering Journal Misalignment
- Vol. 55, Issue 1, Pages: 101-109(2021)
- 作者机构：
  
  西安交通大学现代设计及转子轴承系统教育部重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202101013
  CLC： TH133
- Online First：10 January 2021，
  
  Published：2021
- 稿件说明：
移动端阅览
Study on the Dynamic Characteristics of Water-Lubricated Rubber Journal Bearing Considering Journal Misalignment[J]. 2021, 55(1): 101-109.
DOI：

Study on the Dynamic Characteristics of Water-Lubricated Rubber Journal Bearing Considering Journal Misalignment[J]. 2021, 55(1): 101-109. DOI： 10.7652/xjtuxb202101013.

摘要

针对轴颈倾斜下水润滑橡胶径向轴承动力学建模问题

提出了32系数动力学模型

建立了弹流润滑模型

采用差分求解方法求解了8系数模型和32系数模型下的轴承动特性

分析了偏心率和倾斜角的变化对轴承动特性系数的影响。研究结果表明:轴承的8系数模型下刚度和阻尼系数随偏心率的增大而增大

且在大偏心率下呈指数式增大; 轴承的32系数模型下角刚度和角阻尼系数也随偏心率的增大而增大; 随着轴颈倾斜角增大

32系数模型下轴承的位移刚度系数、位移阻尼系数、角刚度系数、角阻尼系数、角-力交叉刚度系数、角-力交叉刚度阻尼系数、位移-力矩交叉刚度及位移-力矩交叉阻尼系数都相继增大。该研究对水润滑橡胶径向轴承的润滑性能优化设计提供了一定的参考。

Abstract

To solve the dynamic modeling problem of water-lubricated rubber journal bearing with journal misalignment

a 32-coefficient dynamic model is proposed

and the related elastohydrodynamic lubrication model is established. Then the dynamic characteristics of the bearings in 8-coefficient model and 32 coefficient model are solved by difference methods. The influences of eccentricity and journal misalignment angle on the bearing dynamic characteristic coefficient are analyzed. The results show that the stiffness and damping coefficient increase with the eccentricity in the 8-coefficient model

and increase exponentially at large eccentricity; the angular stiffness and angular damping coefficient also increase with the eccentricity in the 32-coefficient model of bearing. With the increase of journal misalignment angle

the displacement stiffness coefficient

displacement damping coefficient

angular stiffness coefficient

angular damping coefficient

angular-force cross stiffness coefficient

angular-force cross stiffness damping coefficient

displacement-torque cross stiffness coefficient and displacement-torque cross damping coefficient in the 32-coefficient model of bearing increase successively. This research may provide a reference for the optimal design of water-lubricated rubber journal bearings.

关键词

Keywords

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