| 稳态和非稳态油膜力模型下的转子系统非线性特征比较 |
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| 引用本文： | 刘淑莲,郑水英,应光耀,汪希萱.稳态和非稳态油膜力模型下的转子系统非线性特征比较[J].机床与液压,2004(8):46-47,42. |
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| 作者姓名： | 刘淑莲 郑水英 应光耀 汪希萱 |
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| 作者单位： | 浙江大学化工机械研究所,杭州,310027;浙江大学化工机械研究所,杭州,310027;浙江大学化工机械研究所,杭州,310027;浙江大学化工机械研究所,杭州,310027 |
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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，分析了油膜力模型按稳态和非稳态短轴承理论计算时的非线性振动特征，同时比较了两种油膜力模型下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，通过与实验比较分析了两种油膜力模型的实用性。
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| 关 键 词： | 非线性转子系统 油膜振荡 不平衡量 |
| 文章编号： | 1001-3881(2004)8-046-2 |
The Nonlinear Characteristics Comparison of Rotor -bearing Under an Unsteady or Steady Oil-film Force Model |
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| LIU Shu-lian,ZHENG Shui-ying,YING Guang-yao,WANG Xi-xuan.The Nonlinear Characteristics Comparison of Rotor -bearing Under an Unsteady or Steady Oil-film Force Model[J].Machine Tool & Hydraulics,2004(8):46-47,42. |
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| Authors: | LIU Shu-lian ZHENG Shui-ying YING Guang-yao WANG Xi-xuan |
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| Abstract: | The dynamical equation of a large-scale rotor-bearing system was established,in which the oil-film forces of the bearings were described by either steady or unsteady nonlinear force model.By means of order reduction and the Newmark integral method,the nonlinear behaviors of the system was numerically studied,and the influence of the unbalance and rotating speed on the system stability were analyzed.The rotor trajectories,frequency spectrum were given for comparison of the oil-film force model. |
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| Keywords: | Nonlinear rotor-bearing system Oil film oscillation Unbalance |
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