Optimum of Drawbead Design and Restraining Forces by Sensitivity Analysis Method Combined with Inverse Approach in Sheet Metal Forming Process

Abstract:

A improved algorithm to optimize the restraining force of equivalent drawbead was proposed base on BGFS(Broyden-Fletcher-Goldfarb-Shanno) algorithm combined with a simplified finite element method called inverse approach(IA). The forming limit curve (FLC) and the wrinkle limit curve (WLC) were considered as the objective function to reflect the influence of Fracture and wrinkle defect in sheet metal forming process. The optimized result was more accurate than those procedures only consider the variation of thickness distribution. The optimized process was also very efficient due to the simplified assumptions of the IA. Two stamping parts were presented to validate the accuracy of this optimum algorithm.

• Periodical: Advanced Materials Research (Volume 502)
• Pages: 369-375
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.502.369
• Online since: April 2012
• Authors: Guo Feng Yi, Yu Qi Liu, Ting Du
• Keywords: Inverse Approach, Optimum Design, Restraining Forces, Sensitivity Analysis, Sheet Metal Forming

References

[1] H. Naceur, Y.Q. Guo, J.L. Batoz, C.Knopf-Lenoir. Optimization of drawbead restraining forces and drawbead design in sheet metal forming process [J]. Int. J. Mechanical Sciences., 2001(43): 2407-2434

DOI: 10.1016/s0020-7403(01)00014-5

[2] H. Naceur, A.Delaméziere, J.L. Batoz, Y.Q. Guo. Some improvements on the optimum process design in deep drawing using the inverse approach[J] Int. J. Materials Processing Technology., 2004(146) :250-262

DOI: 10.1016/j.jmatprotec.2003.11.015

[3] Hyunbo Shim, Kichan Son, Kwanghee Kin. Optimum blank shape design by sensitivity analysis[J] Int. J. Materials Processing Technology., 104 2000(104) :191-199

DOI: 10.1016/s0924-0136(00)00556-2

[4] Liu yuqi, Li Zhigang, Yan Yakun. Fast accurate prediction of blank shape in sheet metal stamping forming, ACTA MECHANICA SOLIDA SINICA, 2004 (17):36-42.

[5] Du Ting, Liu Yuqi, Zhang Zhibing Li Zhigang. Fast and Accurate Estimation of Blank Shape and Strain Distribution for Sheet Metal Forming. China Mechanical Engineering, 2005(16):1867-1870