马鞍形蒙皮拉形工艺参数仿真优化与试验验证  

Simulation optimization and experimental verification of saddle-shaped skin stretch forming process parameters

作　　者：金晓月 欧阳[2] 张贺刚 陈维 徐柯 黄莹 李强 李小强[4] 陈保国 JIN Xiao-yue;OU yang;ZHANG He-gang;CHEN Wei;XU Ke;HUANG Ying;LI Qiang;LI Xiao-qiang;CHEN Bao-guo(Shanghai Aircraft Manufacturing Co.,Ltd.,Shanghai 201324,China;AVIC Shenyang Aircaft Corporation,Shenyang 110850,China;Hangfa Intelligent Manufacturing(Beijing)Technology Co.,Ltd.,Beijing 100083,China;School of Mechanical Engineering and Automation,Beihang University,Beijing 100191,China)

机构地区：[1]上海飞机制造有限公司,上海201324 [2]沈阳飞机工业(集团)有限公司,辽宁沈阳110850 [3]航发智造(北京)科技有限公司,北京100083 [4]北京航空航天大学机械工程及自动化学院,北京100191

出　　处：《塑性工程学报》2024年第8期37-47,共11页Journal of Plasticity Engineering

摘　　要：对某马鞍形蒙皮零件在拉形过程中的起皱和破裂现象进行了研究,以得到消除缺陷的方法。采用作图法,对该蒙皮零件进行了工艺性分析,确定了工艺参数的范围,用正交试验方法设计了数值模拟方案,利用AI-FORM软件拉形模块进行了模拟仿真,并对仿真结果进行了评估,确定了一种最优的方案,并再次进行了有限元仿真验证,最后在拉形机上进行了拉形试验。发现试验结果与有限元仿真结果吻合很好,消除了起皱和破裂等缺陷,提高了零件的成形质量。结果表明,对此蒙皮零件,拉形轨迹前部分采用较大伸长率,拉伸到4.9%,后部分采用较小伸长率,最终拉伸到7%,有利于避免起皱和破裂。另外,相较于FormCAM,AI-FORM在起皱模拟方面具有明显优势。The wrinkling and cracking phenomena of a saddle-shaped skin part in the stretch forming process were studied to obtain the methods of eliminating the defects.By using the drawing method,the processability analysis of the skin part was carried out,and the range of process parameters was determined.The numerical simulation scheme was designed by using the orthogonal experiment method,and the simulation was performed by using the stretch forming module of AI-FORM software.The simulation results were evaluated and an optimal scheme was determined and verified by finite element simulation again.Finally,stretch forming experiments were carried out on the stretcher.It is found that the experimental results were in good agreement with the finite element simulation results,which eliminates the defects such as wrinkling and cracking,and improves the forming quality of the part.The results show that for skin part which is stretched to 4.9%when a larger elongation is used in the front part of the stretch forming trajectory,and is finally stretched to 7%when a smaller elongation is used in the rear part,which is beneficial to avoid wrinkling and cracking.Additionally,AI-FORM has a significant advantage over FormCAM in simulating wrinkling.

关 键 词：拉形 数控拉形机 有限元模拟 马鞍形蒙皮 正交试验 

分 类 号：V260.5[航空宇航科学与技术—航空宇航制造工程] TH164[机械工程—机械制造及自动化] TG386[金属学及工艺—金属压力加工]