摘　要：针对倾斜转子-滑动轴承系统的周期解稳定性问题，考虑倾斜状态下滑动轴承径向载荷的变化，基于有限元法建立了系统的动力学方程。使用Newmark方法仿真得到了倾斜转子-轴承系统的动力学响应，并分析了倾斜角度变化对转子周期解失稳阈速和失稳区宽度的影响。仿真结果表明，转子倾斜角度增大会导致转子失稳阈速减小，失稳宽度增大，但对周期解失稳区域上边界影响不大。倾斜转子的升速实验验证了仿真结果。

Abstract: To study the periodic solution stability problems of inclined rotor-journal bearing system, the dynamic equation of inclined rotor system is established considering the change of radial load of journal bearing based on finite element method. The response of inclined rotor-journal bearing system is obtained by using Newmark method. The influences of inclination angle on rotor unstable threshold and width of unstable area are analyzed. Simulation results show that the increase of inclination angle lead to the decrease of unstable threshold and broaden the unstable area, while the upper boundaries of unstable areas change little. The experimental researches validate the simulation results.