针对航空齿轮壁薄、质轻、动态性能差的特点，提出了一种用有限元进行理论计算，摄动理论进行结构灵敏度分析及参数动力修改的结构动态设计方法及过程。整个过程均在微机上进行。 Aiming at the characteristics of aeronautic gear such as thin, light weight and poor dynamic performance, a dynamic design method and process of structural dynamic analysis based on finite element method and perturbation theory are proposed. The whole process are carried out on the computer.