振型及频率迭代算法的改进及其在 ZQ11A 型纺杯轴承系统的应用

AN IMPROVEMENT ON ITERATION ALGORITHM OF VIBRATION FREQUENCY AND MODE SHAPE WITH ITS APPLICATION ON ROTOR-BEARING SYSTEM OF ZQ11A-TYPE ROTORS

本文在推导了两种高阶清除矩阵的基础上,改进了已有的多自由度线性系统的振型及频率迭代解法,给出了高阶振型及频率的一般算式。应用试解法有效地求得了 ZQ11A 型纺杯轴承系统的振型及频率。

This paper has derived two different forms of Nth order sweeping matrix,from which the Itera- tion Algorithm of Vibration Frequency and Mode Shape has been improved.And the general formula for calculating Nth order vibration frequencies and mode shapes is presented.As an application,the frequencies and mode shapes of Rotor-bearing System of ZQ11A-type spining rotor have been effi- ciently solved.