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<p>The accessory gearbox is a crucial component of the power transmission system of an aero-engine. The current design of the accessory gearbox case heavily relies on engineering experience, resulting in a bulky and heavy structure. This makes it increasingly challenging to meet the design requirements of high-power density. This work proposes a multi-objective topology optimization method based on the compromise programming method for the aero-engine accessory gearbox case. By locally thinning the gearbox case wall thickness, the case weight is reduced by 12.7%, and the maximum Mises stress is also reduced by 19.7% compared to the initial design scheme. Furthermore, the maximum vibration acceleration amplitude is reduced by 23.9%. These results provide a new solution for the lightweight design of the aero-engine accessory gearbox case.</p>

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Multi-objective topology optimization of aero-engine accessory gearbox case based on compromise programming method

  • 期刊论文

  • 发表日期：

    2025年5月28日

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  • Hao Huang,
  • Zeng Wang,
  • Ziyi Yang,
  • Huaiju Liu,
  • Zehua Lu

摘要

The accessory gearbox is a crucial component of the power transmission system of an aero-engine. The current design of the accessory gearbox case heavily relies on engineering experience, resulting in a bulky and heavy structure. This makes it increasingly challenging to meet the design requirements of high-power density. This work proposes a multi-objective topology optimization method based on the compromise programming method for the aero-engine accessory gearbox case. By locally thinning the gearbox case wall thickness, the case weight is reduced by 12.7%, and the maximum Mises stress is also reduced by 19.7% compared to the initial design scheme. Furthermore, the maximum vibration acceleration amplitude is reduced by 23.9%. These results provide a new solution for the lightweight design of the aero-engine accessory gearbox case.