The nonlinear vibration responses of the aeroengine blade were investigated. Considering the effects of the presetting and pretwisted angles, the blade was modeled as a rotating conical shell . Using Hamilton′s principle, the governing partial differential equations of motion under different excitations were established. Both Galerkin′s approach and numerical method were applied to analyze the nonlinear dynamics of the blade. Numerical simulations were performed to investigate the responses of the blade under different rotating speeds and excitations. The results show that both the rotating speed and excitation have effects on the nonlinear dynamics of the blade.
揭晓博,张伟.航空发动机叶片非线性振动分析[J].动力学与控制学报,2019,17(3):205~212; Jie Xiaobo, Zhang Wei. Nonlinear vibration analysis of the aeroengine blade[J]. Journal of Dynamics and Control,2019,17(3):205-212.