外翼上壁板根部连接形式对飞机承载能力的影响研究

Research on Effect of the Construction of Outboard Wing Panel End on Plane Bearing Capacity

在飞机结构设计中,外翼上壁板根部连接处结构形式对飞机的传力、变形、承载能力具有重要影响。通过对3种不同形式的上壁板根部连接方案进行压缩试验,研究各方案的承载能力、破坏方式。通过三维有限元方法,计算了连接部位的主要螺钉所分配的载荷,研究了长桁根部斜角对结构屈服载荷的影响,得到了最优的选型方案。

The construction of outboard wing panel end has an important influence on stress-passing characteristic, deformation and bearing capacity in the design of planes. In this paper, compression tests on three different construction of the end are conducted to study the stress-passing characteristic, failure mode of them. The load shared by each screw is computed by three dimensional finite element method, and the optimum construction is obtained by analyzing the effect of bevel angle on the yield load.