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力学与实践 ›› 2004, Vol. 26 ›› Issue (1): 0-0.doi: 10.6052/1000-0992-2002-415

• 应用研究 •    

有限宽轴承-转子系统非线性行为研究

孙保苍 席慧玲 周传荣   

  1. 南京航空航天大学振动工程研究所 江苏大学理学院 南京航空航天大学振动工程研究所
  • 收稿日期:2002-12-02 修回日期:1900-01-01 出版日期:2004-02-10 发布日期:2004-02-10

NONLINEAR DYNAMICAL BEHAVIORS OF A FINITE JOURNAL BEARING-ROTOR SYSTEM

  • Received:2002-12-02 Revised:1900-01-01 Online:2004-02-10 Published:2004-02-10

摘要: 利用平均本征值法求得有限宽轴承的油膜力.以刚性Jeffcott转子为研究对象,借助数 值积分并结合Poinc\'are映射研究了轴承-转子系统的非线性动力学行为.所得结果为平均 本征值法用于同类型的工程实际问题打下了一定的基础.

关键词: 本征值,油膜力,非线性,分岔,概周期

Abstract: In this paper, the oil film force of finite journal bearing is obtained using averaging natural value method. The nonlinear dynamical behaviors of a rigid rotor-bearing system were investigated with the help of numerical integral, Poinc\'are map and spectrum analysis. Some bifurcation maps about rotating speed and a synthetically parameter which reflected the influence of many factors were drawn. The results show that complicated dynamical behaviors such as Hopf bifurcation, double-period and quasi-period movement are existed. The work above-mentioned lay the basis for averaging natural value method to be applied to engineering structure.

Key words: natural value, oil film force, nonlinear, bifurcation, quasi-period