摘要
机身壁板和机翼壁板是飞机装配过程中典型薄壁件,具有壁薄、弱刚性、曲率变化大等特点,在部装和总装阶段暴露出不同程度的铆接变形问题,且目前无法准确预测或消除。本文从铆接工艺和有限元模型两个方面,建立了面向飞机薄壁件批量铆接过程的有限元仿真简化模型,提出了基于接力计算原理,以MATLAB为二次开发平台,大型有限元软件包ABAQUS为核心求解器的批量铆接过程模拟方法,实现对铆接过程变形情况的分析与预测。通过试验验证该方法的有效性和可行性,为飞机薄壁件铆接变形的控制提供有效的理论支撑。
Fuselage and wing panels are aircraft typical components, with characteristics of thin-wall, weak rigidity, great curvature changing, and structure deformation problems reflected in riveting process are still unable to predict in component assembly and general assembly stage accurately. This paper establishes a simplified model of multi-riveted joints oriented to finite element simulation for aircraft thin-walled components from both the model and process of riveting, and a batch riveting simulation method is proposed with the relay calculated principles as the core, the MATLAB software as the secondary development platform and a large package ABAQUS finite element as the solver, through the simulation and analysis of 10 rivets and experiments the correctness of the established simulation method are verified. The method provides general guidelines on the deformation prediction problem during the entire aircraft riveting assembly process and effective theoretical supports for the aircraft fuselage or wing panel deformation control.
出处
《航空制造技术》
2016年第1期34-37,共4页
Aeronautical Manufacturing Technology
基金
国家自然科学基金资助项目(51375396)资助
关键词
飞机薄壁件
批量铆接
简化模型
有限元仿真
变形预测
Aircraft thin-walled components
Batch riveting
Simplified model
Finite element simulation
Deformation prediction
