厚板多点成形起皱缺陷的仿真  

Simulation of wrinkling defects in thick plate multi-point forming

作　　者：刘宝明 于任龙 尹海军[3] 乐洪博 贾震[2] LIU Bao-ming;YU Ren-long;YIN Hai-jun;LE Hong-bo;JIA Zhen(Key Laboratory of Fundamental Science for National Defense of Aeronautical Digital Manufacturing Process,Shenyang Aerospace University,Shenyang 110136,China;College of Aerospace Engineering,Shenyang Aerospace University,Shenyang 110136,China;Engineering Technology Center,Shenyang Aircraft Industry(Group)Co.,Ltd.,Shenyang 110850,China;Shenyang First Military Representative's Office of Air Force Department,Shenyang 110843,China)

机构地区：[1]沈阳航空航天大学航空制造工艺数字化国防重点学科实验室,沈阳110136 [2]沈阳航空航天大学航空宇航学院,沈阳110136 [3]沈阳飞机工业(集团)有限公司工程技术中心,沈阳110850 [4]空军装备部驻沈阳地区第一军事代表室,沈阳110843

出　　处：《沈阳航空航天大学学报》2023年第1期1-8,共8页Journal of Shenyang Aerospace University

基　　金：国家自然科学基金(项目编号:52275355)。

摘　　要：针对壁板类零件在活络式方形压头和固定式半球压头不同压制方式下的起皱,通过ABAQUS有限元软件模拟成形过程,从接触面积和压制方式两个方面对起皱缺陷进行分析。结果表明:相同条件下非对压活络式方形压头多点成形改善起皱问题效果更好,增大接触面积和非对压的压制方式可以显著改善壁板成形中的起皱问题,数值模拟结果与理论分析结果相符合,为非对压活络式方形压头多点成形技术的应用提供了理论基础。Aiming at the wrinkling of the wall parts under different pressing modes of the movable square indenter and the fixed hemisphere indenter,the forming process was simulated by the finite element software ABAQUS.The wrinkling defects were analyzed from the aspects of contact area and pressing mode.The results show that the effect of the asymmetric pressure adjustable type square head is better under the same conditions.What′s more,increasing the contact area and the asymmetric pressure of pressing mode can significantly improve the wall wrinkling problem of sheet forming.The numerical simulation results are agreement consistent with the theoretical analysis results,which provides a theoretical basis for the the application of multi-point forming technology of square indenter with the asymmetric pressure adjustable type square head.

关 键 词：起皱缺陷 活络式方形压头 多点成形 壁板成形 数值模拟 

分 类 号：V262.32[航空宇航科学与技术—航空宇航制造工程]