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The aerodynamic forces acting on the surface of the turbine rotor blades are the main factor to affect their vibration characteristics, and the resonance of rotor blades can be determined and forced response analysis can be carried out based on the characteristics of aerodynamic excitation force. In the paper, the equivalent aerodynamic excitation forces on the surface of the rotor blade of a certain aeroengine blisk structure are extracted and analyzed, and then the frequency distribution of the excitation force and its variation with rotating speed are analyzed in the time and frequency domains. The results show that the main component of the aerodynamic force is the mean value and the dangerous excitation order is one and two times of the stator blade number. It can be used in forced response analysis to determine the resonance and high cycle fatigue.

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Analysis of Excitation Force on Aeroengine Blisk Structure

  • 会议论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年

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  • Weiyi Xie,
  • Youfu Song,
  • Yihong Chen,
  • Xuewei Lu,
  • Xiangjie Xiong,
  • Changli Liu

摘要

The aerodynamic forces acting on the surface of the turbine rotor blades are the main factor to affect their vibration characteristics, and the resonance of rotor blades can be determined and forced response analysis can be carried out based on the characteristics of aerodynamic excitation force. In the paper, the equivalent aerodynamic excitation forces on the surface of the rotor blade of a certain aeroengine blisk structure are extracted and analyzed, and then the frequency distribution of the excitation force and its variation with rotating speed are analyzed in the time and frequency domains. The results show that the main component of the aerodynamic force is the mean value and the dangerous excitation order is one and two times of the stator blade number. It can be used in forced response analysis to determine the resonance and high cycle fatigue.