| 载荷扰动下可倾瓦推力轴承绝热瞬态过程分析 |
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| 引用本文： | 马希直,朱均.载荷扰动下可倾瓦推力轴承绝热瞬态过程分析[J].航空动力学报,2010,25(3):713-717. |
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| 作者姓名： | 马希直 朱均 |
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| 作者单位： | 1. 南京航空航天大学机电学院,南京,210016
2. 西安交通大学机械工程学院,西安,710049 |
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| 摘 要： | 研究了可倾瓦滑动推力轴承在阶跃载荷扰动下的绝热瞬态行为.通过对轴承油膜参数及轴承元件的动力学建模,获得了大载荷扰动工况下可倾瓦推力轴承热瞬态运动参数的非线性响应曲线.由于瞬态分析中大的计算量及油膜力的非线性,计算中采用了Newton-Raphson法对模型进行求解.最终给出了瞬态过程中轴承最高温度、最小膜厚等参数的变化规律.结果表明:如果设计和运行不当,轴承有可能因为瞬态过程中温升过高等原因失效.
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| 关 键 词： | 热瞬态 可倾瓦 推力轴承 响应 温度 |
| 收稿时间： | 2009/3/16 0:00:00 |
| 修稿时间： | 2009/6/23 0:00:00 |
Transient behavior analysis of adiabatic thermal elasto-hydrodynamic lubrication of journal bearing under step load |
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| MA Xi-zhi and ZHU Jun.Transient behavior analysis of adiabatic thermal elasto-hydrodynamic lubrication of journal bearing under step load[J].Journal of Aerospace Power,2010,25(3):713-717. |
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| Authors: | MA Xi-zhi and ZHU Jun |
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| Institution: | College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China |
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| Abstract: | Adiabatic thermal transient behavior of tilted pads thrust bearing under abrupt load change was studied in this paper.The models of oil film and the dynamic parameters of the bearing parts were established,and solved by Newton-Raphson methods because of large cpu consumption and nonlinear oil film force.The responses of the bearing kinetic parameters were acquired.The changes of highest film temperature,minimum film thickness and other parameters of oil film were presented during the transient period.The results indicate that the bearing may be damaged if the design parameters are not properly selected. |
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| Keywords: | thermal transient pivot pads thrust bearing response temperature |
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