民用飞机雷达罩结构装配容差仿真分析研究  

The research of simulation and analysis of the assembly tolerance of civil aircraft radome structure

作　　者：朱姜蕾 王素晓 刘鹏[1] 王小峰 谭家亮 ZHU Jianglei;WANG Suxiao;LIU Peng;WANG Xiaofeng;TAN Jialiang(Shanghai Aircraft Design and Research Institute,Shanghai 201210,China)

机构地区：[1]上海飞机设计研究院,上海201210

出　　处：《民用飞机设计与研究》2024年第3期42-48,共7页Civil Aircraft Design & Research

摘　　要：结构装配三维容差仿真可以在零件尚未制造、装配的阶段,通过软件模拟零组件装配过程的容差积累,并对模型进行迭代优化来对飞机的容差方案进行指导,避免飞机装配过程出现大规模超差,从而达到节省大量返工时间与材料成本的目的。针对容差传递关系较复杂、传统一维尺寸链分析方式难以胜任的雷达罩-机头结构装配过程,进行了三维容差仿真分析,旨在预测雷达罩-机头装配后能否满足工程要求。基于容差仿真结果-影响因素报告,对雷达罩制造装配方案进行优化,将雷达罩与机头间隙超差概率由3.19%~6.31%降低到0.10%~0.75%;将雷达罩与机头阶差超差概率由0.31%~1.81%降低到0~0.11%。三维容差仿真分析研究结果可以为雷达罩和机头的设计、工艺人员提供参考。Three-dimensional simulation of tolerance for structural assembly can be used to simulate tolerance accumulation during the assembly process before components are manufactured.This helps in guiding tolerance design of aircraft via iteratively optimizing the model,thus avoiding significant deviations in aircraft assembly,and extra time and material costs can be saved.Three-dimensional tolerance simulation analysis helps in predicting whether the controlling objectives can meet engineering requirements during the radome nose assembly process,which can be challenging using traditional one-dimensional size chain methods.The probability of deviation happens in the gap between the nose and radome was reduced from 3.19%~6.31%to 0.10%~0.75%via optimization based on simulation result,and the probability of deviation happens in the step difference between the radome and nose was reduced from of 0.31%~1.81%to 0~0.11%.The results of three-dimensional simulation research of tolerance provides guidance for designer and technician in radome and nose development and production.

关 键 词：雷达罩 机头 容差 装配 仿真分析 

分 类 号：V260.5[航空宇航科学与技术—航空宇航制造工程]