【摘要】 以转子动力学、Hetrz 理论和非线性动力学理论为基础,针对一端轴承座松动的滚动轴承-转子系统的具体特点,建立了系统的动力学方程.通过数值仿真研究了转子系统在转速变化和松动间隙扩展时显示的周期分叉和混沌运动等复杂动力学现象及其变化规律,得出了有价值的结论,这些结论可为该类故障的诊断提供参考.更多还原

【Abstract】 In allusion to the specific features of a nonlinear rolling element bearing-rotor system with bearing house’s looseness at one support,the nonlinear vibration of the system is formulated based on rotor dynamics, Hertz theory and nonlinear dynamics.The complex motions including the period doubling and chaotic motions and the transformational laws are studied with the increase of the rotating speed and the augment of the clear- ance by means of numerical simulation.The analysis results in this paper provide some reference for diagnosing the fault of bearing house’s looseness.更多还原