风扇/增压级动平衡工装最佳支承跨距计算方法

某型航空发动机风扇增压级平衡工装采用悬臂支承结构,其支承跨距是该平衡工装的重要设计参数。针对该平衡工装的结构特点建立了最佳支承跨距的理论分析模型,给出了最佳支承跨距计算的解析表达式,并通过数值计算对最佳支承跨距进行了验证。结果表明:平衡工装最佳支承跨距的解析解与数值解一致,建立的最佳支承跨距计算方法可以为风扇增压级平衡工装的支承跨距的参数设计提供理论指导,提高平衡工装的平衡精度和平衡效果。

Calculation Method of Optimum Bearing Span of Fan/Booster Balancing Tool

The cantilever structure is adopted in balance tool of an aeroengine fan/booster, and the balance tool bearing span is an important design parameter. The theoretical analysis model of the optimal bearing span was established according to the structure characteristics of the balance tool, and the analytical expression of the optimal bearing span was obtained. The result of expression was validated by numerical simulation. The results show that the theoretical result of the optimal bearing span is consistent with numerical calculation, and the calculation method of optimal bearing span can provide guidance to the parameter design of bearing span for balance tool of fan/booster, which can improve the balance accuracy and quality of balance tool.