CFRP沉头孔锪窝深度误差对连接性能的影响  

Effect of CFRP Countersunk Hole Socket Depth Error on Connection Performance

作　　者：戴仡智 郝浩杰 邱建平 赵喜东 齐振超[1] 陈文亮[1] DAI Yizhi;HAO Haojie;QIU Jianping;ZHAO Xidong;QI Zhenchao;CHEN Wenliang(College of Mechanical and Electrical Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;AVIC Xi'an Aircraft Industry(Group)Co.,Ltd.,Xi'an 710089,China;China Changfeng Electromechanical Technology Reserch Institute,Beijing 100854,China)

机构地区：[1]南京航空航天大学机电学院,江苏南京210016 [2]中航工业西安飞机工业(集团)有限责任公司,陕西西安710089 [3]中国长峰机电技术研究院,北京100854

出　　处：《机械制造与自动化》2024年第3期99-104,共6页Machine Building & Automation

摘　　要：沉头螺栓连接能保证结构良好的气动外形,常被应用于飞机蒙皮等结构。沉头孔的制备过程中,由于设备条件限制,会导致锪窝深度误差较大,给复合材料叠层结构带来隐患。针对这一问题,结合有限元仿真分析进行单钉单剪的静拉伸试验,研究锪窝深度误差对CFRP连接性能的影响。结果表明:对比于齐平状态的标准窝深值,锪窝较浅对静强度影响较小,较深则会导致结构的静强度下降,且锪窝越深,静强度下降越快。Although countersunk bolt connection can ensure a good structure of aerodynamic shape and is often used in aircraft skin and other structures,a large error in the depth of countersink socket in the preparation process of countersunk holes is likely to occur due to limited equipment conditions,which brings hidden dangers to the composite laminated structure.To solve the problem,by combineing finite element simulation analysis,conducts a static tensile test of single nail and single shear,and studies the influence of countersink depth error on CFRP connection performance.The results show that the shallower countersink socket has less effect on the static strength compared with the standard fossa depth value in the flush state,and the deeper countersink will lead to the decrease of the static strength of the structure,and the deeper the countersink socket is,the faster the static strength decreases.

关 键 词：螺栓连接 沉头孔 锪窝深度误差 连接性能 

分 类 号：TH131[机械工程—机械制造及自动化]