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轴系是各种机械最重要的运动部件之一,它的动态特性,如固有频率(或临界转速)、振型、动刚度(或动柔度)等,对整机的性能有很大的影响,因此常常需要计算。为了满足不同的实际需要,曾提出许多计算轴系动态特性的方法。有些方法,如传递矩阵法[1][2]、有限单元法等,可详细地考虑轴系的各种因素,如轴的截面变化、轴
Shaft is one of the most important moving parts of all kinds of machinery. Its dynamic characteristics such as natural frequency (or critical speed), vibration mode, dynamic stiffness (or dynamic flexibility), etc., have a great influence on the performance of the whole machine Influence, so often need to calculate. In order to meet different practical needs, many methods for calculating the dynamic characteristics of the shaft system have been proposed. Some methods, such as the transfer matrix method [1] [2], the finite element method, etc., take into account various factors of the shaft system in detail, such as changes in the cross-section of the shaft,