民用飞机外翼中央翼对接肋腹板选型研究

典型民用飞机外翼中央翼是通过对接肋完成对接的,对接肋的腹板在其中起到重要的传递载荷和支持结构的作用。随着制造技术的发展,先进的民用飞机上出现了整体加筋式的腹板,这有别于传统的组合式加筋的腹板结构。利用商业有限元软件Hyperworks研究在压剪复合载荷并均匀油压载荷下,这两种加强筋类型腹板在变形、局部失稳、整体失稳和破坏下的承载能力,得出了较好的加强筋形式。最后分析针对两种类型腹板的压剪复合加载试验,验证了软件的仿真分析,为关键连接区的零件设计提供方法支持。

Structural Analysis and Experimental Study on Joint Rib Web of Outer Wing and Center Wing for Civil Aircraft

Outer wing connects center wing by butt joint rib, which web transfers the load from wing and provides the support for structure. With the development of manufactures, integrated rib stiffened web which is different from the traditional assembled web was employed on the advanced civil aircraft. . Based on Hyperworks (finite element software) to uniform fuel pressure combined with compressive-shear force, two webs were compared on performance under deformation, local buckling, global bucking and failure and the stiffener location were obtained. Compressive-shear force experiment results were analyzed, and emulation was validated. The research can support the part design in the key joint area.