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服役数据表明,民用飞机辅助动力装置在运行中发生破坏时可能产生非包容的高能转子碎片。本文总结了机体结构受非包容转子碎片损伤的评估方法。根据FAA咨询通告中的“小碎片”模型,绘制非包容转子影响区域包络图;对于处于受影响区域中的结构件,通过作图法确定结构件的平动风险角,从而确定结构受影响的严重情况;对应严重情况,建立机体剩余结构有限元模型,施加剩余载荷,计算剩余结构内力解,对剩余结构进行强度分析。
Service data indicate that non-inclusive, high-energy rotor debris may be generated when a commercial aircraft’s auxiliary power unit breaks down during operation. This article summarizes the assessment of the damage to the structure of the body by the non-containment rotor. Draw an envelope diagram of the region of influence of the unaccounted rotor according to the “small fragment” model in the FAA advisory circular; determine the translational risk angle of the structural element for the structural elements in the affected area to determine the structure In the serious situation, the finite element model of the residual structure of the body is established, the residual load is applied, the internal force of the remaining structure is calculated, and the strength of the remaining structure is analyzed.