叶片固有频率散度的计算

The Calculation of Blade Natural Frequency Dispersity

根据文献[1]提出的参数小变化对本征值影响的思路及弯矩法导出在参数小变化时固有频率散度的简便计算公式。并以某型压气机叶片为例,给出小偏差的理论计算值与实测数据的对比结果,其方法可用于叶片固有频率散度的工程计算和频谱分析。

In accordance with the idea,expressed in literature (1) concerning the effect of small changes of parameters on eigenvalues this paper provides a simplified calculation formula for natural frequency dispersity in case of small changes in parameters. Taking the blades of a certain type of compressor as an example, the authors also give the results of comparison between the actually measured data and the theoretically calculated values of small deviations. The method proposed in this paper can be used for frequency spectrum analysis and engineering calculation of blade natural frequency dispersity.