混合流润滑条件下的水润滑橡胶轴承的润滑特性

杜媛英 1; 2; 李明 1; 刘刚 1; 李自刚 1; 侯高强 1

doi:10.7652/xjtuxb202009005

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混合流润滑条件下的水润滑橡胶轴承的润滑特性

更新时间：2025-07-09

- 混合流润滑条件下的水润滑橡胶轴承的润滑特性
- Lubrication Characteristics of Water-Lubricated Rubber Bearings in Mixed-Flow Lubrication
- 西安交通大学学报 2020年54卷第9期页码：49-57
- 作者机构：
  
  1. 西安科技大学理学院,西安,710054
  2. 兰州理工大学能源与动力工程学院,兰州,730050
- 作者简介：
- 基金信息：
  
  : 2020-03-04。作者简介: 杜媛英(1988—),女,在职博士生,工程师。基金项目: 国家自然科学基金资助项目(11972282);陕西省自然科学基金重点资助项目(2018JZ1001)
- DOI：10.7652/xjtuxb202009005
  中图分类号： TG156
- 网络首发：2020-09-10，
  
  纸质出版：2020
- 稿件说明：
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杜媛英 1, 2, 李明 1, 等. 混合流润滑条件下的水润滑橡胶轴承的润滑特性[J]. 西安交通大学学报, 2020,54(9):49-57.

Lubrication Characteristics of Water-Lubricated Rubber Bearings in Mixed-Flow Lubrication[J]. 2020, 54(9): 49-57.
杜媛英 1, 2, 李明 1, 等. 混合流润滑条件下的水润滑橡胶轴承的润滑特性[J]. 西安交通大学学报, 2020,54(9):49-57. DOI： 10.7652/xjtuxb202009005.

Lubrication Characteristics of Water-Lubricated Rubber Bearings in Mixed-Flow Lubrication[J]. 2020, 54(9): 49-57. DOI： 10.7652/xjtuxb202009005.

摘要

针对水润滑橡胶轴承在混合流态下的润滑问题

基于层流、湍流经典润滑理论建立了水润滑橡胶轴承混合流态下的润滑方程

采用有限差分法分析了混合流润滑下的雷诺数、水膜厚度、衬层变形及水膜压力随偏心率、转速和长径比的变化规律

并将层流、湍流和混合流3种润滑流态下计算得到的润滑特性进行了对比分析。结果表明:混合流润滑方程比层流和湍流润滑方程更适合水润滑橡胶轴承的实际运行工况

混合流润滑下的水膜厚度、衬层变形和水膜压力的取值范围均处在层流润滑和湍流润滑之间; 在混合流润滑下

雷诺数在承压区随偏心率的增大而减小

同时随转速的增加而增大; 水膜厚度随偏心率的增大而减小

随转速和长径比的增大而增大; 偏心率对最大衬层变形的影响最大

转速的影响次之

长径比的影响最小; 水膜压力在承压区随着偏心率、转速和长径比的增加均增大。此研究可为准确分析水润滑橡胶轴承实际运行工况下的润滑特性提供参考

也可为计算流体动力学(CFD)仿真水润滑轴承润滑机理的研究提供依据。

Abstract

To study the lubrication characteristics of water-lubricated rubber bearings(WLRBs)in mixed-flow state

based on the classical laminar flow and turbulent lubrication theory

the mixed flow lubrication equations were established for WLRBs. Adopting the finite difference method

the variations of Reynolds number

water film thickness

liner deformation and water film pressure with eccentricity

rotational speed

and length to diameter ratio under mixed-flow lubrication were investigated

and the lubrication characteristics in three different lubrication states of laminar

turbulent and mixed flows were studied. The results show that the mixed-flow lubrication equations are more suitable for the actual operating conditions of WLRBs than the laminar and turbulent theories. For the mixed-flow lubrication

the value ranges of water film thickness

liner deformation and water film pressure are all between that of laminar and turbulent lubrications. For the mixed-flow lubrication

the Reynolds

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Keywords

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