NONLINEAR DYNAMIC CHARACTERISTIC OF THE ROTOR SUPPORTED BY FIXED-TILTING PAD JOURNAL BEARINGS

HEI Di; LV YanJun; ZHANG YongFang

doi:10.16579/j.issn.1001.9669.2016.05.007

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NONLINEAR DYNAMIC CHARACTERISTIC OF THE ROTOR SUPPORTED BY FIXED-TILTING PAD JOURNAL BEARINGS

更新时间：2022-09-22

- NONLINEAR DYNAMIC CHARACTERISTIC OF THE ROTOR SUPPORTED BY FIXED-TILTING PAD JOURNAL BEARINGS
- Journal of Mechanical Strength Vol. 38, Issue 5, Pages: 940-946(2016)
- 作者机构：
  
  1. 陕西铁路工程职业技术学院机电工程系
  2. 西安理工大学机械与精密仪器工程学院
  3. 西安理工大学印刷包装工程学院
- 作者简介：
- 基金信息：
- DOI：10.16579/j.issn.1001.9669.2016.05.007
  CLC：
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HEI Di, LV YanJun, ZHANG YongFang. NONLINEAR DYNAMIC CHARACTERISTIC OF THE ROTOR SUPPORTED BY FIXED-TILTING PAD JOURNAL BEARINGS. [J]. 38(5):940-946(2016)
DOI：

HEI Di, LV YanJun, ZHANG YongFang. NONLINEAR DYNAMIC CHARACTERISTIC OF THE ROTOR SUPPORTED BY FIXED-TILTING PAD JOURNAL BEARINGS. [J]. 38(5):940-946(2016) DOI： 10.16579/j.issn.1001.9669.2016.05.007.

摘要

以固定-可倾瓦轴承支撑的单盘柔性转子为研究对象,根据转子动力学理论建立了其动力学模型。基于动态Reynolds方程和边界条件,运用Castelli法求解Reynolds方程,在单瓦坐标系下建立了单块轴瓦的非线性油膜力数据库。经过坐标变换,组装计算最终获得固定-可倾瓦轴承的油膜力。在计算油膜力的时候考虑两种情况,即考虑瓦块转动惯量和忽略瓦块转动惯量。首先将这两种情况下转子的运动轨迹进行比较,然后这种分析了考虑瓦块转动惯量时转子的动力学行为,同时也比较了在不同的预负荷和支点比的情况下转子的运动轨迹和可倾瓦瓦块的摆角。

Abstract

In this paper,the single disk flexible rotor which is supported by the fixed-tilting pad journal bearings is studied,and the model of the rotor system is established by the rotor dynamics theory. The Reynolds equation is solved by the method of Castelli based on the dynamic Reynolds equation and the boundary conditions,at the same time,the oil film force data base of single pad is established in its coordinate system. Through the coordinate transformation,the oil film force of the fixed-tiling pad journal bearing is obtained by the assembly method. When the oil film force is calculated,two situations are considered,i. e.considering the inertia of the pad and neglecting the inertia of the pad. Firstly,the comparison of the rotor orbit is complemented at the two situations. Then,the dynamic behaviors of the rotor are analyzed at the situation of considering the inertia of the pad,and the comparison of pendulum angles of tilting pads and the orbits of the rotor are implemented at different preloads and pad pivot ratios.

关键词

固定-可倾瓦轴承非线性动力学稳定性数据库油膜力

Keywords

Fixed-tilting pad bearingsNonlinear dynamicsStabilityData baseOil film force

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