模具参数对分瓣模式无铆连接工艺影响  

Influence of die parameters on clinching process with extensible dies

作　　者：刘营 王志勇 邢鲁超 Liu Ying;Wang Zhiyong;Xing Luchao(School of Mechanical and Electrical Engineering,Shandong University of Aeronautics,Binzhou 256600,China)

机构地区：[1]山东航空学院机电工程学院,山东滨州256600

出　　处：《锻压技术》2024年第3期143-151,共9页Forging & Stamping Technology

基　　金：山东省自然科学基金资助项目(ZR2020KE051,ZR-2021QE204);山东省重点研发计划项目(2019GGX105004);滨州学院科研基金(BZXYLG2015);滨州学院双服务项目(BZXYSFW-201912)。

摘　　要：为了研究分瓣模式无铆连接过程中模具参数对接头性能的协同影响,利用有限元分析软件Abaqus建立了Al5052铝合金的分瓣模式无铆连接过程的有限元模型,并对连接过程进行了数值模拟分析,得到了接头成形过程中材料的等效应力场、凹模运动速度等信息,分别分析了凹模深度、凹模半径和滑动模预紧力对接头几何参数的影响,最后对这3个因素对接头几何参数的协同影响进行了综合分析。结果表明,滑动模预紧力的加入改变了凹模半径和凹模深度双因素对接头互锁值的影响规律,施加一定的滑动模预紧力能够改善接头的机械互锁,提高接头的力学性能。研究得到的模具参数对接头成形的影响规律,为铝合金分瓣模式无铆连接工艺的研究应用奠定了基础。In order to study the synergistic effect of die parameters on joint performance during the clinching process with extensible dies,a finite element model of clinching process with extensible dies for Al5052 aluminum alloy was established by finite element software Abaqus,and the connection process was numerically simulated and analyzed to obtain the information of equivalent stress field,movement speed of sliding die and so on during the joint forming process.Then,the influences of die depth,die radius and preload of sliding die on the geometric parameters of joint were studied.Finally,the synergistic influence of these three factors on the geometric parameters of joint was comprehensively analyzed.The results show that the addition of the preload of sliding die changes the original influence of die radius and die depth on the interlock value of joint,and applying a certain preload of sliding die can improve the mechanical interlock of joint and the mechanical properties of joint.Thus,the influence of die parameters on the joint forming lays a foundation for the research and application of the clinching process with extensible dies for aluminum alloy.

关 键 词：Al5052铝合金 分瓣模式无铆连接 滑动模 预紧力 互锁值 

分 类 号：TG306[金属学及工艺—金属压力加工]