转子系统的质量偏心对非线性振动特性的影响 - 北京东方振动和噪声技术研究所 关键词：转子轴承系统，非线性振动，质量偏心 [gap=386]KEYWORDS：rotor-bearing system, nonlinear vibration, mass eccentricity
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local mass eccentricity 局部质量偏心率
mass eccentricity of the superstructure 上部结构质量偏心
eccentricity of mass 质量偏心率
Mass eccentricity only influences the main critical peak and has less effect on other peaks.
质量偏心主要影响临界峰值，对其它各峰值影响很小。
The bifurcation diagrams of bending and torsional vibrations can be divided into four zones which have different influence of mass eccentricity.
同时，弯振和扭振分叉图可分为四个运动区，质量偏心对这四个运动区的影响各不相同。
The results show that the coupled bending-torsional vibration range increases and the motion changes from periodic motion to quasi-periodic motion as the mass eccentricity rises;
结果表明：随着质量偏心的增加，弯扭耦合区的范围增大，系统运动由周期运动变为概周期运动；
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