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The Aero-engine Bevel Gear often experiences traveling wave resonance (TWR) due to various excitations during operation. The problem is even more severe if traveling wave superposition resonance (TWSR) occurs. Here, we use transient finite element simulation to further analyze the TWSR of aero-engine bevel gears. (1) Modal analysis shows that there are multiple natural frequencies in the TWR of the 3rd nodal diameter (ND), forming a dense modal region. (2) When the meshing frequency exceeds a certain threshold, a corresponding frequency division amplitude also emerges alongside the meshing frequency. As the meshing frequency approaches the threshold value, the fluctuation in contact force increases and the meshing performance decreases. (3) It is noted that the speed corresponding to this threshold falls between the resonance speeds of 3rd ND. The peak-to-peak value of contact force is significantly higher compared to other resonance speeds. In addition, the axial displacement nephogram aligns with the characteristics of the 3rd ND vibration mode, indicating that TWSR has occurred. (4) By adding a damping ring, we successfully suppressed the TWSR of 3rd ND of the bevel gear web.

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Research on Dynamic Characteristics of Traveling Wave Superposition Resonance of Aero-Engine Bevel Gear

  • 会议论文

  • 发表日期：

    2026年

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  • Liubing Chen,
  • Wenjun Luo,
  • Zhongya Jia,
  • Dongbing Tu

摘要

The Aero-engine Bevel Gear often experiences traveling wave resonance (TWR) due to various excitations during operation. The problem is even more severe if traveling wave superposition resonance (TWSR) occurs. Here, we use transient finite element simulation to further analyze the TWSR of aero-engine bevel gears. (1) Modal analysis shows that there are multiple natural frequencies in the TWR of the 3rd nodal diameter (ND), forming a dense modal region. (2) When the meshing frequency exceeds a certain threshold, a corresponding frequency division amplitude also emerges alongside the meshing frequency. As the meshing frequency approaches the threshold value, the fluctuation in contact force increases and the meshing performance decreases. (3) It is noted that the speed corresponding to this threshold falls between the resonance speeds of 3rd ND. The peak-to-peak value of contact force is significantly higher compared to other resonance speeds. In addition, the axial displacement nephogram aligns with the characteristics of the 3rd ND vibration mode, indicating that TWSR has occurred. (4) By adding a damping ring, we successfully suppressed the TWSR of 3rd ND of the bevel gear web.