| 油膜失稳故障的非线性特征分析 |
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| 引用本文： | 郑水英,刘淑莲,汪希萱.油膜失稳故障的非线性特征分析[J].流体机械,2003,31(4):28-31. |
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| 作者姓名： | 郑水英 刘淑莲 汪希萱 |
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| 作者单位： | 浙江大学,浙江杭州,310027 |
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| 基金项目： | 国家教委博士点基金项目 ( 960 3 3 5 2 2 ) |
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| 摘 要： | 以多自由度转子系统为对象，运用模态降阶和变步长的Newmark积分方法分析了油膜力分别按短轴承理论和长轴承理论计算时的非线性振动特征，同时分析了转子不平衡量的大小和转速对轴颈振动的涡动轨迹、频谱及其稳定性的影响。
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| 关 键 词： | 非线性转子系统 油膜振荡 不平衡量 稳定性 |
| 文章编号： | 1005-0329(2003)04-0028-04 |
| 修稿时间： | 2002年10月10 |
The Nonlinear Character of Oil Film Unstability |
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| Zheng Shuiying,Liu Shulian,Wang Xixuan.The Nonlinear Character of Oil Film Unstability[J].Fluid Machinery,2003,31(4):28-31. |
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| Authors: | Zheng Shuiying Liu Shulian Wang Xixuan |
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| Affiliation: | Zheng Shuiying Liu Shulian Wang Xixuan |
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| Abstract: | On the basis of the stable short bearing theory and long bearing theory,the nonlinear dynamical equation of a mult\|freedom rotor system can be solved by the order reduction and the Newmark integral method.The characteristics of rotor trajectories,frequency spectrum and stability of the nonlinear rotor\|bearing system were nurnerically studied under different unbalance and roating speed.The result can provide the theoretical reference for forecasting and diagnosing fault of oil film unstabbility. |
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| Keywords: | nonlinear rotor bearing system oil film oscillation unbalancing weight |
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