数值结果表明，同轴承长径比及转子质量偏心相比，轴颈间隙是影响系统轴心轨迹和频域特性的主要因素。
The result shows that compared with slenderness ratio of bearing and the eccentricity of rotor, the journal clearance is the main factor influencing the trajectory and domain characteristics.
通过对位移信号的快速FFT变换，分析了系统振动信号的基本特征，研究了双侧转子对中间轴颈振动的影响；
The displacement signals of ten test positions in the system were processed with FFT Algorithm and basic spectrum features were extracted.
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