某型航空发动机宽弦风扇叶片强度分析

Stress Analysis of Wide-chord Fan Blade from an Aero Engine

针对某型航空发动机,考虑到离心力和气动力共同作用的影响,对该型发动机风扇叶片进行了有限元建模和强度分析,其中对气动力的加载进行了适当的简化。计算结果表明,该型叶片具有较高的静强度储备;应力集中区域在风扇叶片叶盆靠近叶根的区域,是叶片的几何形状以及离心力和气动力共同作用的结果。

For a type of aero- engine,this paper has established a finite element model and then analyzed the model stress to the engine fan blades by considering the influence of the centrifugal force and aerodynamic force. The aerodynamic force has been appropriately simplified. Calculation results show that this type of fan blade has high static strength reserve; region of stress concentration is in the pressure surface of the fan blade near the blade root,which is because of the blade geometry and the influence of the centrifugal force and aerodynamic force.