用广义Lanczos法分析含流管系的模态参数和稳定性

Analysing the Modal Parameters and Stability ofPipe-structrure Conveying Fluid with Generalized-Lanczos Method

本文对高速稳定流复杂管系的有限元模型直接用广义Ｌａｎｃｚｏｓ法进行模态参数和稳定性分析，从而提高了计算效率。文中对完全避免复数运算进行了研究，得出了实用的计算公式，并对计算结果进行了实验验证。

This paper analyses directly the medal parameters and stability of complicated pipe-structure con-veying high velocity and steady fluid with generalized Lanczos methed,and computing efficiency israised.Moreover,the paper analyses thoroughly the problem that the complex computation can beavoided completely,and presents the applicable computing fomulations.