Simulation and Springback Prediction of Integral Panel with High Ribs in Age Forming

Abstract:

Age forming is the best forming method of integral panel parts of aircrafts, which have large amount of springback and the springback’s accuracy, is hard to control, so a method which can make an accurate prediction of the springback after forming is needed. This article which is based on creep test data and CPT, fits the creep constitutive equation and obtained the material parameter. The numerical simulation is adopted to process age forming simulation on springback of T-specimen of aluminum 2124, and the simulation result is compared with the test result to do revision of the material parameter; the revised material parameter is applied into the numerical simulation of age forming of the integral panel which is of high strength. Through tests which can confirm the error ranges from -1mm to +1mm, this method’s accuracy is proved.

• Periodical: Applied Mechanics and Materials (Volumes 152-154)
• Pages: 135-139
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.152-154.135
• Online since: January 2012
• Authors: Zhong Gan, Hai Bing Tan, Jia Zan Zhu
• Keywords: Age Forming, Creep Constitutive Equation, Numerical Simulation, Springback Prediction

References

[1] Huang Ling, Wan Min , Wu Xiangdong etc. Prediction of Springback and Tool Surface Modification Technology for Age Forming of Integral Panel [J]，Acta Aeronautica Et Astronautica Sinica 2009, 30（8）: 1531-1536.

[2] P P J eunechamps , K C Ho , J Lin , J P Ponthot , T ADean. A closed form technique to predict springbackincreepage2forming[J ] . International Journal of Mechan2ical Sciences , 2006. 48 (6) : 6212-6218.

[3] K.C. Ho, J. Lin, T.A. Dean. Modelling of springback in creep forming thick aluminum sheets[J ]. International Journal of Plasticity 20 (2004) 733–751.

DOI: 10.1016/s0749-6419(03)00078-0

[4] GanZhong, Zhang Haiyan, Wang Tianxiu. Research on Application of Creep Constitutive Model in Age-forming Simulation[J]，Journal of System Simulation 2009, 20(21): 6647-6649.

[5] Huang Xia, ZengYuansong, Huang Shuo. Experimental research on the creep age forming for aluminium alloy 2324 [J], JOURNAL OF PLASTICITY ENGINEERIN G 2009, 16(3): 136-139.

[6] Huang Ling, Wan Min, HuangShuo. FE Analysis of Creep Age Forming for Aluminum Alloy 7B04 Plate [J]，Precise sheet metal forming technology 2007: 484-487.

[7] GanZhong, Zhang Lei XuXudong etc. Research on springback compensation of mold surfacefor age forming of integral panel [J]，JOURNAL OF PLASTICITY ENGINEERIN G 2010, 17(5): 15-18.