装配工装是飞机制造过程中最重要的工艺装备之一,结构复杂,对刚度、强度和轻量化要求较高.使用有限元法对某型飞机进气道后段装配工装进行仿真分析和优化设计,针对装配工装的复杂性提出离散化模型简化原则和参数化优化方法,直观、显著地提高了工装骨架的刚度,最大形变量优化为0.0715 mm,且保证其不过于笨重,节约了原材料的使用量.%Assembly fixture is one of the most important technological equipment during the process of aircraft manufacturing, its structure is certain to be complex and possess superior stiffness, strength and light weight. This article analyzes and optimizes the structure of aircraft rear-inlet fixture by finite element analysis ( FEA) and gives out the principle of discretization modeling and the optimization method based on parametric modeling. Based on the principle and optimization method above, the optimized fixture is not only used to greatly enhance, the stiffness, but also meets the demand of light weight. It is clear that the maximum deformation of the fixture' s frame is decreased to 0.0715 mm. In addition, it is of potential benefits.
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