TY - JOUR
T1 - Characteristics analysis of forced vibration response of mistuned cascades
AU - Zhang, Weiwei
AU - Gao, Yiqi
AU - Quan, Jinlou
AU - Su, Dan
N1 - Publisher Copyright:
© 2017, Press of Chinese Journal of Aeronautics. All right reserved.
PY - 2017/9/25
Y1 - 2017/9/25
N2 - 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.
AB - 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.
KW - Computational fluid dynamics (CFD)
KW - Fluid-structrual coupling
KW - Forced response
KW - Mistuning
KW - Reduced order model (ROM)
UR - http://www.scopus.com/inward/record.url?scp=85037544179&partnerID=8YFLogxK
U2 - 10.7527/S1000-6893.2017.621018
DO - 10.7527/S1000-6893.2017.621018
M3 - 文章
AN - SCOPUS:85037544179
SN - 1000-6893
VL - 38
JO - Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica
JF - Hangkong Xuebao/Acta Aeronautica et Astronautica Sinica
IS - 9
M1 - 521018
ER -