复杂薄壁零件板多级充液成形及过程数值模拟

李涛; 郎利辉; 安冬洋; 王玲

复杂薄壁零件板多级充液成形及过程数值模拟

1.
北京航空航天大学机械工程及自动化学院, 北京 100083
2. 沈阳飞机工业集团有限公司 110034

基金项目: 国家自然科学基金资助项目(10577001); 归国留学人员基金资助项目; 新世纪优秀人才支持计划资助项目

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中图分类号: TG 394
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出版历程
- 收稿日期: 2006-07-01
- 网络出版日期: 2007-07-31

Multi sheet hydroforming of complicated thin wall part and numerical simulation

1.
School of Mechanical Engineering and Automation, Beijing University of Aeronautics and Astronautics, Beijing 100083, China
2. Shenyang Aircraft Corporation, Shenyang 110034, China

摘要

摘要: 板充液成形已被证明是制造复杂零件一种有效的方法.采用板多级充液成形方法对难成形复杂薄壁结构的飞行器零件进行了研究,利用有限元数值模拟的方法,分析了预成形凸模形状、预成形深度,以及液室压力等关键工艺参数对成形的影响.对成形中出现的诸如破裂、起皱等失效形式进行了探讨,给出了终成形时实现成功成形的最高液室压力区域范围.提出了控制成形质量的措施,优化了工艺参数,并根据数值模拟的结果进行了试验验证.结果表明,模拟结果和试验结果达到了较好的一致.
- 多级板充液成形 /
- 数值模拟 /
- 液室压力
Abstract: Sheet hydroforming has proven to be an effective method for manufacturing complicated parts. The multi-sheet hydroforming technology of complicated thin wall aerocraft part was investigated. Effects of key process parameters including the shape of pre-forming punch,corresponding pre-forming depth,and cavity pressure on the forming process of the finally formed parts were explored in multi-hydrodynamic deep drawing by using the finite element numerical simulation methods. Failure types including fracture and wrinkling during sheet hydroforming were discussed. The successful region of the maximal cavity pressure was provided during the forming process of the final formed parts. The measures of controlling forming quality were presented, and process parameters were optimized. According to the results of the numerical simulation, the experimental confirmations were carried on by using the equipment of sheet hydroforming which had been developed independently. It is shown that the results from the simulation are in reasonable agreement with those from experiment.
- multi sheet hydroforming /
- numerical simulation /
- cavity pressure

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参考文献(1)

[1] Siegert K, Haussermann M, Losch B, et al. Recent development in hydroforming technology[J]. Mater J Process Technol, 2000, 98:251-258 [2] 徐永超, 陈宇, 苑世剑. 板材充液拉深:汽车等行业的重要新兴产业[J]. 锻造与冲压,2006(6):57-59 Xu Yongchao, Chen Yu, Yuan Shijian. Sheet metal hydro-mechanical deep drawing:a new and important technology in the field of automobile [J]. Forging & Metalforming, 2006(6):57-59(in Chinese) [3] Gelin J C, Ghouati O, Paquir P. Modelling and control of hydroforming processes for flanges forming Annals of CIRP. Switzerland:Hallwag, 1998, 47 (1):213-216 [4] Zhang Shihong, Lang Lihui, Kang Dachang, et al. Hydromechanical deep-drawing of aluminium parabolic workpieces-experiments and numerical simulation[J]. International Journal of Machine Tools & Manufacture, 2000, 40:1479-1492 [5] Geiger M, Vollertsen F, Hein P. Hydroforming of sheet metal pairs Kals H J. Proc Technol of the SheMet′98. Netherlands:Enschede, University of Twent, 1998:37-50 [6] Amino H, NaKamura K, Nakagawa T. Counter-pressure deep drwing and its application in the forming of automobile parts[J]. Journal of Materials Processing Technology, 1990, 23:43-265 [7] Lang Lihui, Danckert J, Nielsen K B. Analysis of key parameters in sheet hydroforming combined with stretching forming and deep drawing[J]. Journal of Engineering Manufacture Proceedings of the IMechE, Part B, 2004, 218:845-856 [8] Lang Lihui, Kang Dachang, Zhang Shihong, et al. Effects of specified blank size on body wrinking during hydrodynamic deepdrawing of tapered rectangular box[J]. Acta Metallurgica Sinica, 2000, 13(1):476-480 [9] Geiger M, Voollertsen P H. Hydroforming of sheet metal pairs[J]. Proceedings of She Met, 1998, 98:37-51 [10] Roades M L, Roades L J. Method and apparatus for die forming sheet materials:US, 5 085 068 .1992 [11] Lang Lihui, Danckert J, Nielsen K B. Study on hydromechanical deep drawing with uniform pressure onto the blank[J]. International Journal of Machine Tools & Manufacture, 2004, 44:495-502 [12] Novotny S, Geiger M. Process design for hydroforming of lightweight metal sheets at elevated temperatures[J]. Journal of Materials Processing Technology, 2003, 138:594-599

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