| 弹性支承不平衡转子系统非线性振动特性研究 |
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| 引用本文： | 刘初升,赵跃民.弹性支承不平衡转子系统非线性振动特性研究[J].中国矿业大学学报,2004,33(6):656-659. |
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| 作者姓名： | 刘初升 赵跃民 |
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| 作者单位： | 1. 中国矿业大学,机电学院,江苏,徐州,221008
2. 中国矿业大学,化工学院,江苏,徐州,221008 |
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| 基金项目： | 国家自然科学基金重大研究项目(90210035)
国家杰出青年基金项目(50025411) |
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| 摘 要： | 本以大型振动筛激振器的转子轴承系统为研究对象，研究了轴承弹性非线性的转子-轴承系统的动力学行为，建立了不平衡转子-轴承系统的弹性振动的时变方程，用多重尺度法给出了系统的解析解，发现不平衡转子-轴承系统的弹性振动存在超次谐波现象，最后以ZK2065型振动筛激振器为例给出了其数值解，从中发现轴承的预紧对转子-轴承系统的稳定性有较大的影响，因此在系统设计时应避开不稳定区．
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| 关 键 词： | 振动筛 激振器 转子轴承系统 时变方程 超次谐波 |
| 文章编号： | 1000-1964(2004)06-0656-04 |
| 修稿时间： | 2004年5月10日 |
Research on Nonlinear Characters of Elastic Support Unbalance Rotor System |
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| LIU Chu-sheng,ZHAO Yue-min.Research on Nonlinear Characters of Elastic Support Unbalance Rotor System[J].Journal of China University of Mining & Technology,2004,33(6):656-659. |
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| Authors: | LIU Chu-sheng ZHAO Yue-min |
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| Abstract: | The rotor-bearing system of large screen exciter was studied in detail. The nonlinear elastic dynamics characters of rotor-bearing system was given, and time-dependant equation of unbalance rotor-bearing elastic vibration was proposed. The theoretical solution of the equation was obtained by means of a multiple scale method. The elastic vibration sub-harmonic waves of rotor-bearing system was found. Finally the numerical result of ZK2065 vibration screen exciter was obtained, and the result shows that the stability of rotor-bearing system was observably influenced by tightness of bearing. The range of unstable frequency should be avoided during designing rotor-bearing system. |
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| Keywords: | unbalanced rotor-bearings system time-dependant equation sub-harmonic wave |
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