【摘要】 文中应用非线性动力学现代理论对建立的碰摩转子模型进行了研究。结果表明 :转速变化时 ,系统具有拟周期、周期、混沌运动交替出现的现象 ,且在不同的混沌区内吸引子表现为不同的形状 ,Poincare截面上的高维拟周期轨道表现出特殊的封闭形式。同时 ,还揭示了阻尼对系统复杂运动的抑制作用和非线性刚度使系统运动进一步复杂化等现象。这些现象对于准确诊断转子故障和进一步了解转子的非线性特征都有很大的参考价值。图 7参 9更多还原

【Abstract】 In this paper, the mathematic model of the rotor system with rub impact is analyzed by applying modern nonlinear dynamics theory. As a result, it is indicated that the motion of the rotor system alternates among the periodic, chaotic and quasi periodic vibrations, as rotating speed increases. Meanwhile, the different chaotic regions show the different attractor configurations. Effect of damping on restraining complicated responses is shown by the bifurcation diagrams, in addition to effect of nonlinear stiffness on encouraging complicated responses. The phenomena are great meanings to accurately diagnose rub impact failure, further know nonlinear characteristics of the rotor system. Figs 7 and refs 9.更多还原