CFRP/合金构件抽芯铆接成型机制及钉套变形区参数优化  

Core-Pulling Riveting Forming Mechanism of CFRP/Alloy Components and Parameter Optimization of Deformation Zone in Nail Sleeve

作　　者：桂林景 李皓 周秩同 胡建清[3] 王安康 单垄垄 张涵 GUI Linjing;LI Hao;ZHOU Zhitong;HU Jianqing;WANG Ankang;SHAN Longlong;ZHANG Han(Tianjin Key Laboratory of Fastening and Connecting Technology Enterprises,Aerospace Seiko Co.,Ltd.,Tianjin 300300,China;School of Mechanical Engineering,Tianjin University,Tianjin 300354,China;China Helicopter Design and Research Institute,Jingdezhen Jiangxi 300384,China)

机构地区：[1]航天精工股份有限公司,天津市紧固连接技术企业重点实验室,天津300300 [2]天津大学机械工程学院,天津300354 [3]中国直升机设计研究所,江西景德镇300384

出　　处：《机床与液压》2024年第17期176-184,共9页Machine Tool & Hydraulics

摘　　要：结合仿真及试验的方法,针对机械锁紧鼓包型抽芯铆钉的钉套变形区中高温区域的屈服强度和长度等参数对连接强度的影响规律进行研究。通过建立有限元仿真模型及试验验证,预测钉套变形区的鼓包成型形状与复合材料铆接结构的失效形式,并对铆接结构的承载性能变化规律进行分析。此外通过建立BP神经网络模型,得到了铆接结构最佳的钉套变形区中高温区域的屈服强度和长度等参数。结果表明:随着钉套构件高温区材料屈服强度的增加和长度的减少,铆接结构件鼓包成型装配力逐渐提升,同时铆接结构也出现承载力峰值,这主要与拉伸过程中鼓包成型区域的变形和复合材料的损伤有关。Simulation and experimental methods were combined to study the influence of parameters such as yield strength and length in the high-temperature region of the deformation zone of the mechanical locking drum type core pulling rivet on the connection strength.By establishing a finite element simulation model and experimental verification,the bulging shape of the deformation zone of the nail sleeve and the failure form of the composite riveted structure were predicted,and the variation law of the load-bearing performance of the riveted structure was analyzed.In addition,by establishing a BP neural network model,the yield strength and length of the high-temperature region in the deformation zone of the rivet sleeve with the best riveting structure were obtained.The results indicate that as the yield strength of the material in the high-temperature zone of the nail sleeve component increases and the length decreases,the assembly force of the riveted structural component bulge forming gradually increases,and at the same time,the riveted structure also shows a peak bearing capacity,which is mainly related to the deformation of the bulge forming area and the damage of the composite material during the tensile process.

关 键 词：复合材料 铆接成型 有限元仿真 BP神经网络 

分 类 号：TB333[一般工业技术—材料科学与工程]