前言目前,碟片式分离机的振动问题已成为衡量产品质量的一个关键指标。因此,在进行动力学分析时,不仅要计算机器的第一阶临界转速,而且还要计算第二阶临界转速。国内广泛应用的碟片式分离机临界转速计算方法是两个自由度的影响系数方法。此法适于手算,对一阶临界转速的计算精度也比较好,但只能算分离机的一阶临界转速,而且要将轴简化为等直径或两个直径段、对复杂的 Preface At present, the vibration problem of disc separator has become a key indicator of product quality. Therefore, in the dynamic analysis, not only to calculate the first critical speed of the machine, but also to calculate the second critical speed. The widely used disc separator critical speed calculation method is two degrees of freedom influence coefficient method. This method is suitable for hand calculations, the first-order critical speed calculation accuracy is better, but only the first-order critical speed separator, but also to reduce the shaft to equal diameter or two diameter segments, the complexity of