飞机主承力结构细节分析

工程上往往会遇到如飞机、轮船、汽车等大型结构，对这些大型结构进行有限元分析有时须同时考虑整体以及局部。对于大型结构采用较密的网格，这样会耗费大量时间、资源等，有时会导致计算不收敛；对于局部结构须划分较细的网格才能得到局部构件的细节应力。本文采用子结构法（超单元法）对机翼整体模型中的主承力构件梁进行网格细化，其中梁筋条与肋以及梁缘条与机翼蒙皮采用钉元（弹簧元）模拟多钉连接。在危险载荷工况下对梁进行强度校核和钉载分析，结果表明子结构法能很好地反映大型结构的整体以及细节应力分布，钉元法能很好地模拟机翼多钉连接。

The Detail Analysis for Primary Load-carrying Structure of the Aerocraft

In the project we will often meet like the airplane,the steamboat,the automobile and so on large-scale structure.The whole analysis often be considered as well as the detail analysis for the large-scale structure during the finite element analysis.Using the dense grid regarding the large-scale structure,like this will cost the massive time,the resources and so on,sometimes will cause the computation not to convergence;the thin grid must be used to regard the partial structure which could obtain the partial ...