聚合物基复合材料凸头螺栓连接研究进展

机械连接是聚合物基复合材料最典型的连接方式，因其在连接工艺性和可靠性方面的优势，使其在航空航天制造领域得到了广泛应用。对凸头螺栓连接聚合物基复合材料接头的研究进展进行综述。回顾了复合材料接头的机械连接形式，讨论了在拉伸加载下的失效过程，详细论述了复合材料接头的损伤模式；重点讨论了复合材料接头力学性能影响因素的研究进展，包括复合材料性能（纤维类型、增强体结构形式、纤维与金属混杂层板、铺层角度及比例、固化工艺、初始材料缺陷）、紧固件性能（紧固件刚度、钉头型式、螺栓直径、螺纹密封、间隙配合、干涉配合、紧固件缺失）、连接板性能、侧向约束（拧紧力矩、预紧面积、补偿垫片、接触面摩擦因素）、几何效应（复合材料板尺寸、板厚与孔直径比、层合板宽度与孔直径比、孔端距与孔直径比、螺孔形状、螺孔质量、螺孔位置误差）、载荷（静载荷、动态载荷、疲劳载荷、蠕变、松弛、温湿载荷）等；对聚合物基复合材料凸头螺栓连接的未来研究方向进行了展望。

Research progress in mechanically fastened polymer-matrix composite joints with protruding-head bolts

The present article attempts a more comprehensive review of recent literature in the broader area of mechanically fastened polymer-matrix composite joints with protruding-head bolts. The article begins with a review of the mechanical configurations of composite joints. A study of the mechanical configurations of composite joints opens the topic. This is followed by a discussion of the failure progression of composite joints in tensile loading. The remaining sections are devoted to the influence of composite properties (fiber type, reinforcement structure, fiber and metal mixed laminates, ply angle and proportion, curing process, initial material defects), fastener performance (fastener stiffness, bolt head type, bolt diameter, thread seal, gap fit, interference fit, fastener missing), connection plate performance, lateral constraints (tightening moment,bearing area, compensation gasket, contact surface friction factors), geometric effects (composite plate size, plate thickness to hole diameter ratio, specimen width to hole diameter ratio, hole end distance to hole diameter ratio, hole shape, hole quality, hole position error) as well as loads (static load, dynamic load, fatigue load, creep, relaxation, warm and wet load) on joint strength and failure. Finally, comments are offered regarding the most important remaining problems in this area, along with recommendations for future work.