考虑轴倾斜的滑动轴承流固耦合瞬态分析

朱希玲; 李学慧

doi:10.12299/jsues.22-0018

考虑轴倾斜的滑动轴承流固耦合瞬态分析

doi: 10.12299/jsues.22-0018

朱希玲^1,,
李学慧²

1.
上海工程技术大学机械与汽车工程学院，上海 201620
2.
鞍钢实业集团有限公司冶金资源再生利用分公司，鞍山 114031

详细信息

作者简介:
朱希玲（1977−），女，讲师，硕士，研究方向为流体力学、油膜轴承. E-mail：zhuxiling@sues.edu.cn

中图分类号: TH133
计量
- 文章访问数: 244
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- PDF下载量: 49
- 被引次数: 0
出版历程
- 收稿日期: 2022-01-25
- 刊出日期: 2022-06-30

Transient analysis of misaligned journal bearings based on fluid-structure interaction approach

ZHU Xiling^1
,,
LI Xuehui²

1.
School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
2.
Metallurgical Resource Recycling Branch of Angang Industrial Group Co., Ltd., Anshan 114031, China

摘要

摘要:
考虑轴受力产生变形引起的轴倾斜，采用流固耦合方法，直接求解Navier−Stokes方程，对滑动轴承系统中轴和润滑油膜进行三维瞬态分析，同时求解流场和固体域，得到油膜动态压力分布、轴心的运动轨迹和不同转速下油膜厚度分布. 结果表明，轴倾斜使油膜压力分布和轴心轨迹变化明显，最小油膜厚度减小，流场压力峰值增大. 通过对滑动轴承的三维瞬态分析可以预测轴承工作过程中实时的轴心轨迹、压力分布、油膜厚度等润滑特性，为滑动轴承的优化设计提供参考.
- 滑动轴承 /
- 轴倾斜 /
- 瞬态分析 /
- 油膜厚度
Abstract:
The shaft is deformed with the action of load. The misalignment due to deformation caused by the action of load is considered. The fluid-structure interaction method was used. Navier-Stokes equation was solved directly. The three-dimensional transient analysis of shaft and oil film in journal bearing system was carried out. The flow field and solid domain were solved at the same time. Transient film pressure distribution, trajectory of journal center and minimum oil film thickness under different rotate speeds were solved. The results show that the oil film pressure distribution and thickness of oil film change obviously. The minimum oil film thickness decreases, the peak oil film pressure increased when misalignment was considered. The real-time trajectory of journal center, oil film thickness and transient film pressure distribution can be predicted by the transient analysis, which is very significant for the optimal design of journal bearing.
- journal bearing /
- misalignment /
- transient analysis /
- oil film thickness

HTML全文

图 1 轴承轴向示意图

Figure 1. Geometry of misaligned journal bearing

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图 2 对中状态下的轴心轨迹图

Figure 2. Trajectory of aligned shaft

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图 3 倾斜状态下的轴心轨迹图

Figure 3. Trajectory of misaligned shaft

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图 4 对中时油膜瞬态压力分布

Figure 4. Transient film pressure distribution of aligned shaft

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图 5 轴倾斜时油膜瞬态压力分布

Figure 5. Transient film pressure distribution of misaligned shaft

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图 6 沿轴线方向上油膜节点压力分布

Figure 6. Curve of nodal pressure along Z direction

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图 7 沿轴线方向节点压力随转速变化曲线

Figure 7. Curve of nodal pressure along Z direction at different rotation speeds

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图 8 最小油膜厚度随转速的变化曲线

Figure 8. Minimum oil film thickness at different speeds

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