挤压成型铝合金薄板焊接接头疲劳强度研究  

Fatigue Assessment of Welded Joints of Extruded Aluminum Alloy Ribbed Sheet

作　　者：徐双喜[1,2] 马甲金 陈高澎 谌伟[1,2] 吴轶钢[1,2] XU Shuangxi;MA Jiajin;CHEN Gaopeng;SHEN Wei;WU Yigang(Deputy Dean School of Naval Architecture,Ocean Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Key Laboratory of High Performance Ship Technology,Wuhan University of Technology,Wuhan 430063,China;Luoyang Ship Material Research Institute,Luoyang 471000,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,武汉430063 [2]武汉理工大学高性能船舶技术教育部重点实验室,武汉430063 [3]洛阳船舶材料研究所,洛阳471000

出　　处：《武汉理工大学学报(交通科学与工程版)》2025年第1期47-52,共6页Journal of Wuhan University of Technology(Transportation Science & Engineering)

基　　金：中央高校基本科研业务费资助项目(2021II032JC,202402001)。

摘　　要：文中对整体挤压成型带筋薄板T型焊接的温度场和应力场进行了系统的模拟分析,并开展了一系列5083-H116铝合金整体挤压成型带筋薄板T型焊接接头疲劳实验.在此基础上,以焊接变形和残余应力为初始条件,基于热点应力更新了适用于整体挤压成型带筋薄板T型焊接接头的疲劳等级曲线.与传统焊接接头相比,挤压板焊接接头横向残余应力提高了22.04%,焊接角变形降低了46%.结果表明,焊接变形和残余应力对传统薄板焊接结构的疲劳效应更为敏感.The temperature field and stress field of T-welding of integrally extruded ribbed sheet were systematically simulated and analyzed,and a series of fatigue tests of T-welded joints of integrally extruded ribbed sheet of 5083-H116 aluminum alloy were carried out.On this basis,taking welding deformation and residual stress as initial conditions and based on hot spot stress,the fatigue grade curve suitable for integral extrusion forming T-shaped welded joints of ribbed thin plates was updated.Compared with the traditional welded joint,the transverse residual stress of the welded joint of extruded plate is increased by 22.04%,and the welding angular deformation is reduced by 46%.The results show that welding deformation and residual stress are more sensitive to the fatigue effect of traditional thin plate welded structure.

关 键 词：挤压成型 加筋板 薄板焊接变形 疲劳强度 

分 类 号：U663.9[交通运输工程—船舶及航道工程]