摘要
随着船舶动力装置的发展,出现了各种形式的轴系扭振复杂分支系统,给使用传统的试算方法进行系统的固有频率计算带来一定困难,有时会出现“漏根”和“奇异值”问题。本文研究了复杂分支系统的特点,提出用矩阵运算的QR方法进行固有频率计算。
With the development of marine power plant, there appear various kinds of complicated multi-branched system of axial torsional vibration. This makes it more difficult to carry out calculation of the natural frequencies of the system traditionally. There are sometimes problems of'missing root'and'singular value'. This paper investigates the characteristics of complicated mulibranched system, giving the trial method of natural frequencies by applying the RQ method of matrix calculation. This method is of high speed and precision with good distinguishing ability, requiring only little computer storage. This can be used for the calculation of arbitrary torsional vibration, satisfying the needs of ship design and production and drawing examination for ship test.
关键词
扭振
固有频率
动力装置
船舶
complicated multi-branched system
torsional vibration natural frequencies
trial method
RQ Methods
system matrix
missing root
singular value
