网站首页期刊简介编委会过刊目录投稿指南广告合作征订与发行联系我们English
拉形轨迹对铝合金贮箱箱底瓜瓣拉形成形的影响
英文标题:Influence of stretch forming trajectory on stretch forming of melon shaped bottom for aluminum alloy tank
作者:张杰刚 李继光 周超  李玉辰 张下陆 李小强 
单位:1.天津航天长征火箭制造有限公司 2.首都航天机械有限公司 3.北京航空航天大学 机械工程及自动化学院 
关键词:拉形轨迹 2219铝合金 箱底瓜瓣 拉形成形 ABAQUS软件 
分类号:TG316
出版年,卷(期):页码:2019,44(10):29-34
摘要:

 

 
利用ABAQUS有限元分析软件,分析了3种典型的拉形成形轨迹对铝合金贮箱箱底瓜瓣拉形成形的影响,并进行了试验验证。结果表明:采用先包覆再拉伸的拉形轨迹,成形力不能有效地传递到成形区域而集中在模具的圆角处,圆角处的壁厚为6.7 mm,其余部位壁厚基本保持不变,为6.9~7.0 mm,零件的应变分布不均匀,成形效果较差;采用先拉伸再包覆的拉形轨迹,零件产生较大的变形,成形过程中在过渡圆角处有断裂的危险,最小壁厚达到了6.2 mm,减薄率为11.5%;采用边包覆边拉伸的拉形轨迹,零件的应变分布变化趋势较为平缓,壁厚分布也较均匀,零件壁厚为6.6~6.8 mm。
 

 

 
The influences of three typical stretch forming trajectories on stretch forming of melon shaped bottom for aluminum alloy tank were analyzed by the finite element analysis software ABAQUS, and the experiment verification was carried out. The results show that through the stretch forming trajectory of first covering and then stretching, the forming force cannot be effectively transferred to the forming area and concentrated in the fillet of die, the wall thickness at fillet is 6.7 mm, and the wall thicknesses of the rest areas remain unchanged, which is 6.9-7.0 mm. Therefore, the strain distribution of part is not uniform, and the forming results is poor. However, the stretch forming trajectory of first stretching and then covering is used, the part produces large deformation, and the transition fillet has the risk of fracture in forming process, namely, the minimum wall thickness is 6.2 mm and the thinning rate is 11.5%. Furthermore, by the stretch forming trajectory of covering and stretching at the same time, the variation trend of strain distribution for part is relatively smooth, the wall thickness distribution is more uniform, and the wall thickness of part is 6.6-6.8 mm.
基金项目:
天津市科技支撑项目(17YFZCGX00530)
作者简介:
作者简介:张杰刚(1980-),男,硕士,高级工程师 E-mail:zhangjg_0532@163.com 通讯作者:李继光(1981-),男,博士,高级工程师 E-mail:jiguangli2008@126.com
参考文献:

 


 

 


[1]韩金全, 陈石平, 徐龙. 某复杂蒙皮拉形中起皱缺陷的消除
[J]. 精密成形工程, 2015, 7(2):55-59.

 

Han J Q, Chen S P, Xu L. Elimination of wrinkle defects from a certain complex aircraft skin during stretching
[J]. Journal of Netshape Forming Engineering, 2015, 7(2):55-59. 

 


[2]陈雪, 王瑶, 李明哲. 基于可变型面模具的蒙皮件柔性夹钳拉形技术研究
[J]. 机床与液压, 2015, 43(5):60-62.

 

Chen X, Wang Y, Li M Z. Research on flexible gripper stretch forming technology for skin parts based on reconfigurable forming die
[J]. Machine Tool & Hydraulics, 2015, 43(5):60-62.

 


[3]白雪飘, 李东升, 万敏, 等. 基于蒙皮拉形模拟系统的数控拉形仿真与实践
[J].塑性工程学报, 2004,11(1):43-45,51.

 

Bai X P, Li D S, Wan M, et al. Simulation and practice on NC stretch-forming for the stretchform system
[J]. Journal of Plasticity Engineering, 2004,11(1):43-45,51.


[4]王仲仁, 滕步刚, 汤泽军. 塑性加工技术新进展
[J]. 中国机械工程, 2009, 20(1):108-112.

 

Wang Z R, Teng B G, Tang Z J. New development on technology of plasticity
[J]. China Mechanical Engineering,2009, 20(1):108-112.

 


[5]王昆, 万敏. 铝合金拉形粗晶临界预应变曲线的建立及应用
[J]. 北京航空航天大学学报, 2013, 39(4):508-511.

 

Wang K, Wan M. Determination and application of coarse-grain critical pre-strain curve to aluminum alloy stretch forming
[J]. Journal of Beijing University of Aeronautics and Astronautics, 2013, 39(4):508-511.

 


[6]方昆范, 黄英主. 机械工程材料实用手册
[M]. 沈阳:东北大学出版社, 1995.

 

Fang K F, Huang Y Z. Practical Handbook of Mechanical Engineering Materials
[M]. Shenyang: Northeastern University Press, 1995.

 


[7]刘纯国, 刘伟东, 邓玉山. 多点冲头主动加载路径对薄板拉形的影响
[J]. 吉林大学学报:工学版,2018, 48(1):221-228.

 

Liu C G, Liu W D, Deng Y S. Effect of multi-point punch active loading path on the stretch-forming of sheet
[J]. Journal of Jilin University: Engineering and Technology Edition, 2018, 48(1):221-228.

 


[8]谭富星, 张镇川, 宗超勇. 不同夹持方式下高速动车组蒙皮件拉形过程数值模拟
[J]. 锻压装备与制造技术, 2016, 51(6):95-98.

 

Tan F X, Zhang Z C, Zong C Y. Numerical simulation of high speed train skin parts stretch-forming process based on flexible clamping method
[J]. China Metalforming Equipment & Manufacturing Technology,2016, 51(6):95-98.

 


[9]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.

 


[10]李小强, 宋楠, 李东升. VTL型数控蒙皮拉形机加载轨迹设计
[J]. 塑性工程学报,2012, 19(4):49-55.

 

Li X Q, Song N, Li D S. Design of loading trajectory for VLT numerical control stretch forming machine
[J]. Journal of Plasticity Engineering, 2012, 19(4):49-55.

 


[11]陈志红, 李明哲, 高占民. 蒙皮件多点拉形过程中成形缺陷的数值模拟
[J]. 塑性工程学报, 2007, 14(3):112-116.

 

Chen Z H, Li M Z, Gao Z M. Numerical simulation study about forming defects on the process of muti-point stretch-forming for skin parts
[J]. Journal of Plasticity Engineering,2007,14(3):112-116.

 


[12]韩志仁, 孔庆猛, 孟祥韬. 飞机蒙皮拉形加载轨迹研究
[J]. 机械设计与制造, 2016, (4):258-261.

 

Han Z R, Kong Q M, Meng X T. Study on loading trajectory of aircraft skin in stretch forming
[J]. Machinery Design & Manufacture,2016, (4):258-261.

 
服务与反馈:
本网站尚未开通全文下载服务】【加入收藏
《锻压技术》编辑部版权所有

中国机械工业联合会主管 北京机电研究所有限公司 中国机械工程学会塑性工程分会主办
联系地址:北京市海淀区学清路18号 邮编:100083
电话:+86-010-82415085 传真:+86-010-62920652
E-mail: fst@263.net(稿件) dyjsjournal@163.com(广告)
京ICP备07007000号-9