复合材料层板沉头连接钉载分配影响因素研究  

Study on pin load distribution of multi-countersunk bolt composite laminate joints

作　　者：孙永波[1] 董艇舰[1] 刘昕[1] 潘亚东[1] 

机构地区：[1]中国民航大学工程技术训练中心,天津300300

出　　处：《中国民航大学学报》2016年第3期57-61,共5页Journal of Civil Aviation University of China

基　　金：中央高校基本科研业务费专项(3122015C007)

摘　　要：通过ABAQUS软件建立了多钉沉头螺栓连接三维有限元模型,对复合材料层合板与金属板多钉连接结构进行拉伸性能分析,计算了沉头连接的钉载分配情况,并就钉孔间隙、螺栓扭矩、沉头比等因素对钉载分配的影响进行分析。结果表明:与凸头连接相比,多钉沉头连接对钉载分配有一定的改善作用;钉孔间隙和螺栓刚度对钉载分配影响显著,螺栓扭矩和金属板刚度对钉载分配有一定的影响,但并不明显;摩擦和沉头比对钉载分配的影响可以忽略不计。A 3D finite element model of m ulti-countersunk bolt joint is established with ABAQUS. The tensile performanceof m ulti-bolt joint of composite laminate with metal plate is analyzed, the pin load distributions are calculated,and the effect of factors such as pin clearance, bolt torsion moment, height ratio on the load distributions areanalyzed. Results show that countersunk bolts can improve load distributions slightly compared with protrudingheadbolt for composite laminate joints. The pin clearance and bolt stiffness have great effect on loaddistributions, while the bolt torsion moment and metal plate stiffness have slightly effect, and the effect of frictionand height ratio can be ignored.

关 键 词：复合材料层合板 连接结构 沉头螺栓 载荷分配 拉伸 

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]