【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。更多还原

【Abstract】 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.更多还原