基于并联装配模型的飞机壁板件装配偏差分析

Assembly Variation Analysis of Aeronautical Panels Based on the Model of Assembly in Parallel

飞机是一种对气动外形准确度要求很高的机械产品,壁板件作为飞机机身的主要部件,其装配质量将会影响飞机的装配质量及性能。目前,对壁板件的装配偏差分析主要还是按照传统的柔性件装配偏差模型进行,而没有针对壁板件的装配工艺特点进行建模分析,这势必会造成分析偏离实际装配情况,导致结果精度不高。本文针对壁板件装配工艺特点提出一种并联装配模型,在小变形、线弹性假设下对其进行装配偏差分析,建立并联装配偏差模型,在此基础上,按照壁板件装配顺序建立壁板件装配偏差模型,为壁板件装配偏差分析及预测提供理论和技术手段。并以具体案例模型分别对所提出的并联装配偏差模型及壁板件装配偏差模型进行了求解及仿真装配验证。

The aircraft is a kind of mechanical products with high accuracy for aerodynamic shape. As the main components of the fuselage of aircraft, the panel assembly quality influences the quality and performance of aircraft assembly. At present, the assembly variation analysis of panel part mainly uses the traditional assembly variation model of the flexible parts, without taking the characteristics of the assembly process of panel part into account. This is bound to cause analysis to deviate from the actual assembly, and lead to low accuracy of results. In this paper, an assembly model in parallel is proposed for the assembly process of panel part. At first, under the assumption of small deformation and linear elasticity, the assembly variation is analyzed, and the assembly variation model in parallel is established. Then the assembly variation of aeronautical panel is modeled according to the assembly sequence of panel part, which provides theoretical and technical means for the analysis and prediction of the assembly variation of panel part. Finally, the specific cases are used to solve and verify the assembly variation analysis model in parallel and the assembly variation model of panel part separately.