Transactions of Materials and Heat Treatment

Title：Research on compound forming process of stretch forming and hydroforming based on numerical simulation

Authors： Chen Shulai Sun Gang Lang Lihui Zhang Chun Zhang Peng

Unit： Tianjin Tianduan Press Co. Ltd. Tianjin Tianduan Aviation Technology Co. Ltd. Beihang University

KeyWords： aluminum alloy stretch forming hydroforming compound forming numerical simulation

ClassificationCode：TG306

year,vol(issue):pagenumber：2018,43(8):49-53

Abstract：

The mechanical properties of aluminum alloy 2024-O were obtained by uniaxial tensile test, and the compound forming process of stretch forming and hydroforming was numerically simulated by finite element analysis software Dynaform. Then, the thinning ratio, FLD forming limit and springback of parts in the compound forming process were analyzed, and the thinning ratio, forming limit diagram and springback value of forming parts were obtained. The results show that comparing with the original skin stretch forming process, the compound forming process improves the yield of difficult parts from 10% to 80% and eliminates the excessive thinning of partial areas with the local maximum thinning ratio decreasing from 22% to 15%, and the process stability of parts is greatly improved. Meanwhile，the compound forming process combines the advantages of skin stretch forming and hydroforming, and the deformation of parts is evenly distributed as well as the fixability of parts is effectively improved. Finally, the feasibility and

Funds：

天津市科技计划项目:新一代中型运载火箭关键典型罩类零件研发与制造(17YFZCGX00530）

陈树来（1986-），男，硕士，工程师，E-mail：120534940@qq.com

Reference：

［1］柏玲磊，陈梁玉，赵坤民.飞机蒙皮振动辅助拉伸成形工艺分析
［J］.锻压技术，2017，42(11)：18-25.

Bai L L，Chen L Y，Zhao K M.Analysis on vibration-assisted stretch forming of aircraft skin panel
［J］.Forging ＆ Stamping Technology,2017，42(11)：18-25.

［2］韩志仁，周叔阳，刘宝明，等.基于 ANSYS 的蒙皮拉形钳口轨迹优化技术研究
［J］.沈阳航空航天大学学报，2017，34（1）：15-19.

Han Z R，Zhou S Y，Liu B M,et al.Research on loading trajectory optimization technology in stretch forming for aircraft skin based on ANSYS
［J］.Journal of Shenyang Aerospace University，2017，34（1）：15-19.

［3］李奎，郎利辉，吴磊，等.锥形薄壁零件多道次充液成形方法
［J］.塑性工程学报，2016，23（4）：36-41.

Li K，Lang L H，Wu L，et al.Multi-stage hydroforming method for conical thin-walled parts
［J］.Journal of Plasticity Engineering, 2016，23（4）：36-41.

［4］王玲，巫永坤，张建民，等. 飞机铝合金双曲度蒙皮充液成形的数值模拟与试验
［J］. 锻压技术，2017，42（6）：169-173.

Wang L，Wu Y K，Zhang J M，et al. Numerical simulation and experiment on the hydroforming for double curved aircraft aluminum alloy skin
［J］. Forging & Stamping Technology，2017，42（6）：169-173.

［5］崔亚平，王连东，吴娜，等.大减径比阶梯管坯液压胀形轴向力加载方式的研究
［J］.塑性工程学报，2017，24（2）：88-92.

Cui Y P，Wang L D，Wu N，et al. Loading modes of axial force for stepped pipe with large diameter reduction ratio in hydroforming
［J］.Journal of Plasticity Engineering，2017，24（2）：88-92.

［6］王玲,崔丽,刘韬,等,复杂凸凹曲率飞机蒙皮充液成形技术研究与应用
［J］.航空制造技术，2017，(21)：80-84.

Wang L，Cui L， Liu T，et al.Research and application of hydroforming for hyperbolic airplane skin with complex concave and convex curvature
［J］.Aeronautical Manufacturing Technology，2017，(21)：80-84.

［7］ Norfleet W. Algorithms for Closed Loop Shape Control
［D］. Cambridge：Massachusetts Institute of Technology,2001.

［8］Papazian J M . Tools of change:Reconfigurable forming dies raise the efficiency of small-lot production
［J］. Mechanical Engineering,2002,124: 52-55.

［9］Oding S S. Controlling the formation of double curvature skins elements on a program controlled stretch formerⅠ
［J］.Soviet Aeronautics, 1987, 30(3): 57-61.

［10］李文平. 汽车顶盖前横梁拉延成形工艺数值模拟分析
［J］.塑性工程学报，2017,24（2）：118-121，127.

Li W P. Numerical simulation analysis on drawing forming process of front cross member of automobile top cover
［J］.Journal of Plasticity Engineering，2017,24（2）：118-121,127.

［11］郎利辉，王永铭，谢亚苏，等.铝合金异形件充液成形失稳控制策略
［J］.塑性工程学报，2011，18(5): 33-37.

Lang L H,Wang Y M,Xie Y S,et al.Investigation into the failure control during hydroforming of special-shaped aluminum sheet part by finite element analysis and experiment
［J］.Journal of Plasticity Engineering,2011,18(5):33-37.

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