Characteristics analysis of forced vibration response of mistuned cascades

Weiwei Zhang, Yiqi Gao, Jinlou Quan, Dan Su

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

This paper employs a reduced order aerodynamic model based on Computational Fluid Dynamics (CFD), coupled with the structural dynamic equation, to analyze the forced vibration response of the mistuned cascade. The displacement amplitude of the typical transonic cascade in the tuned and mistuned cases are calculated by the proposed method, and the effect of mistuning patterns, mistuning strengths and mass ratios on the forced vibration response amplitude of the mistuned cascade are investigated quantitatively. The results show that the stiffness mistuning patterns in this paper can improve the stability of the cascade, but can also result in the increase of the modal localized level. The maximum vibration amplitude magnification factor has a peak value as the mistuning strength increases or the mass ratio decreases, and the peak value is significantly affected by mistuning patterns. Due to its efficiency in the analysis of the modal localization of the mistuned cascade with forced vibration, the proposed method is beneficial for engineering applications.

源语言英语
文章编号521018
期刊Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica
38
9
DOI
出版状态已出版 - 25 9月 2017

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