复合材料层合板沉头多钉连接钉载分配研究  

Research of load distribution in multi-countersunk bolt joints on composite laminate

作　　者：孙永波[1] 程小全[1] 张纪奎[1] 胡仁伟[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100191

出　　处：《高科技纤维与应用》2013年第1期63-66,74,共5页Hi-Tech Fiber and Application

基　　金：北航凡舟基金青年基金(20090506)

摘　　要：沉头螺栓连接因具有改善钉载分配不均匀性,保持结构表面光滑等优点,在飞行器复合材料表面结构连接中得到了广泛应用。但是国内外对于沉头连接钉载分配却少有研究,通过ABAQUS软件建立复合材料层合板与金属沉头螺栓多钉连接三维有限元模型,计算沉头连接的钉载分配情况。对比凸头连接的载荷分配结果发现:沉头连接对钉载分配有一定的改善作用,且金属板厚度的改变对沉头螺栓载荷分配影响很小。Countersunk bolt joint can improve the structural load distribution and aero-performance of the aircraft, which are widely used in composite aircraft surface structure. But, the research on load distribution of countersunk bolt joints on composite laminate is not uncommon in previous papers. In this article, the numerical simulation model was established to analyze load distribution of countersunk joint in composite laminate with metal. The results showed that compared with composite protruding-head bolt joint, countersunk bolt joint can improve load distribution slightly. And changing metal thickness hardly effected the load distribution of composite countersunk bolt joint.

关 键 词：复合材料层合板 沉头螺栓连接 凸头螺栓连接 钉载分配 研究 

分 类 号：V214.8[航空宇航科学与技术—航空宇航推进理论与工程]