飞机橡皮囊成形零件毛坯精确预示方法研究  

Research on Precise Blank Prediction Method of Aircraft Part by Rubber Bladder Forming

作　　者：朱明华[1,2] 王文斌[1] 鲍益东[1] 黄翔[1] 

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]上海飞机制造有限公司,上海200436

出　　处：《航空学报》2013年第3期670-676,共7页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(51075206);2011年度上海市高新技术产业化重点项目(11-42);上海飞机制造有限公司2012年度创新基金~~

摘　　要：橡皮囊成形是飞机钣金零件成形的主要方法之一,其初始毛坯形状的预示是橡皮囊成形中的一个难点问题。针对橡皮囊成形的工艺特点,提出了一种基于一步逆成形有限元法的飞机橡皮囊成形钣金零件毛坯快速精确预示方法。首先将设计好的飞机钣金零件作为最终构形,然后采用一步逆成形有限元法进行初始毛坯的快速反向模拟,最后将通过该方法获得的毛坯外形应用到实际飞机钣金橡皮囊成形中,实验结果表明该方法可以快速精确地预示出飞机橡皮囊成形钣金零件的初始毛坯形状。Rubber bladder forming is one of the main forming methods for aircraft sheet metal parts in which the prediction of initial blank shape is difficult, in accordance with the technology characteristics of rubber bladder forming, a fast prediction method is proposed for the initial blank shape of a rubber bladder formed part based on one-step inverse forming finite ele- ment method. Firstly, the designed aircraft sheet metal part is treated as the final configuration; then a quick reverse simulation is carried out to obtain the initial blank by the one-step inverse finite element method. Finally, the blank outline from the above method is applied to real rubber bladder forming manufacture. The experimental results demonstrate that this method can predict the precise initial blank shape for a rubber bladder forming part.

关 键 词：橡皮囊成形 钣金零件 毛坯 一步逆成形 有限元法 

分 类 号：V261.28[航空宇航科学与技术—航空宇航制造工程]