Main Stiffness and Main Damping of Sliding Bearings Considering Local Contact

doi:10.7652/xjtuxb201401019

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Main Stiffness and Main Damping of Sliding Bearings Considering Local Contact

更新时间：2025-07-09

- Main Stiffness and Main Damping of Sliding Bearings Considering Local Contact
- Vol. 48, Issue 1, Pages: 112-117(2014)
- 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/xjtuxb201401019
  CLC： TH113;TH117
- Online First：10 January 2014，
  
  Published：2014
- 稿件说明：
移动端阅览
Main Stiffness and Main Damping of Sliding Bearings Considering Local Contact[J]. 2014, 48(1): 112-117.
DOI：

Main Stiffness and Main Damping of Sliding Bearings Considering Local Contact[J]. 2014, 48(1): 112-117. DOI： 10.7652/xjtuxb201401019.

摘要

针对存在局部固体接触的滑动轴承动特性问题

提出了根据分布参数润滑模型的轴承主刚度和主阻尼系数的简化算法。在流固耦合基本润滑方程中

通过引入润滑区与接触区的个数、面积和位置等分布特征参数

得到了滑动轴承分布参数润滑模型。以水润滑轴承为例

减少分布特征参数数目

并采用分解和合成的计算策略

得到了轴承主刚度和主阻尼系数的简化计算式。通过无转速情况下的加载试验

获得了典型载荷范围内轴承的结构静刚度

这与假设承载区圆心角为60°的理论值相差15.5%

并由引入无线传感技术的多因素试验获得了阻尼数据。研究结果表明:该模型及简化算法适用于小膜厚(<10 μm)轴承进行试验数据分析或设计计算

为部分液膜润滑轴承刚度试验与理论值相差较大(甚至成倍)的问题提供了一条研究思路。

Abstract

Aiming at dynamic characteristics of sliding bearings with local solid contact

a simplified algorithm of main stiffness and main damping based on distributed parameter lubrication model is proposed and experimentally verified. The numbers

sizes and positions of lubrication areas and contact areas are introduced in the fluid-solid coupling lubrication equations to form the distributed parameters lubrication model of sliding bearing. Taking water-lubricated bearing as an example

the simplified formula of main stiffness and main damping is obtained by decreasing the number of distributed parameters and using the computation strategy of decomposition and synthesis. A single factor test when the rotor is static is designed and conducted. The experimental value of bearing structure stiffness differs from the theoretical value by 15.5% when the central angle of load area is assumed as 60°. Multi-factor test with wireless sensor technology is conducted to obtain the damping coefficients. The results show that the distributed parameter lubrication model and proposed algorithm are suitable for the test data analysis or design calculations of small thickness(<10 μm)bearings

and provide an approach for problem with obvious difference between the theoretical and experimental stiffness for partial liquid-film bearings.

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Keywords

references

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