论文部分内容阅读
利用ABAQUS软件对壁板斜搭接件各钉承载比例进行了三维有限元分析。在分析过程中采用静态接触算法模拟钉与板的连接、板与板的搭接,并综合考虑搭接片之间的摩擦和接触、沉头铆钉上的预紧力、铆钉干涉量以及整个模拟试验件的边界约束条件。分析计算结果与试验结果基本一致,说明采用该软件和静态接触算法来模拟计算钉载分配是可行的。研究结果表明,在一定的使用范围内,对于机翼壁板斜搭接结构,减少搭接片最小厚度,一、四排钉传载率下降,二、三排钉传载率上升,钉载分配趋于均匀,且孔周局部应力集中也有所降低。
The ABAQUS software was used to carry out the 3D finite element analysis of the load carrying ratio of the slatted slat. In the process of analysis, the static contact algorithm is used to simulate the connection between the nail and the plate, the overlap between the plate and the plate, and the friction and contact between the lap tabs, the preload on the countersunk head rivet, the interference amount of the rivet and the whole simulation Boundary conditions for test pieces. The analysis and calculation results are basically consistent with the experimental results, which shows that it is feasible to use this software and the static contact algorithm to simulate the load distribution. The results show that in a certain range of application, for the oblique slap connection structure of the wing panels, the minimum thickness of the lap joint is reduced, the transmission rates of one and four rows of nails decrease, the transmission rates of the second and third rows of nails increase, Distribution tends to be uniform, and the local stress concentration around the hole also decreases.