Transactions of Materials and Heat Treatment

Title：Optimum design of multi-step forming part based on response surface model

Authors： LIU Wei WU Jian-jun PENG Yong-qian

Unit： Northwestern Polytechnical University Xian Aircraft Industry (Group) Co. Ltd.

KeyWords： multi-step forming response surface design of experiment optimum design

ClassificationCode：TG386

year,vol(issue):pagenumber：2011,36(1):157-160

Abstract：

Focused on the problem of cracking which easily occurred in stepped boxed-shaped parts when multi-step forming, the maximal thinning of blank was chosen as the object function, and combining with the central composite face-centered design of experiment，the forming process of the parts with different sizes were simulated by finite element software DYNAFORM, the moving least square based on second order response surface models was gradually established to replace the complex and implicit relation between the design parameters and output response, and then, global optimum design in the region of interest was found out using genetic algorithm. The optimized design size was got. The stepped boxs cracks are effectively avoided during the multi-step forming to have the qualified part.

Funds：

国家863计划（2008AA04Z120）

Reference：

［1］谢延敏，于沪平，陈军，等. 基于代理模型的板料成形优化技术进展[J]. 塑性工程学报, 2006, 13（2）：20-24.
［2］苏娟华，张文琼，李丽春. 神经网络与正交试验法结合优化板料成形工艺[J]. 锻压技术,2009, 34（1）：154-156.
［3］刘伟. 板料成形工艺与模具多目标优化设计技术及应用研究[D]. 哈尔滨：哈尔滨工业大学, 2005.
［4］ Kok S, Stander N. Optimization of a sheet metal forming process using successive multipoint approxi-mations[J].Structural Optimization, 1999, 18:277-295.
［5］ Naceur H, Ben-Elechi S, Batoz J L, et al. Response surface methodology for the rapid design of aluminum sheet metal forming parameters[J].Materials & Design,2008,29:781-790.
［6］ Jansson T,Andersson A,Nilsson L. Optimization of draw-in for an automotive sheet metal part-An evaluation using surrogate models and response surfaces[J]. Journal of Materials Processing Technology,2005,159:426-434.
［7］孙成智，陈关龙，林忠钦，等. 基于数值模拟的变压边力优化设计[J]. 上海交通大学学报, 2004, 38（7）：1086-1090.
［8］孙光永,李光耀,龚志辉.基于代理模型的变复杂度方法在板料成形优化中的应用[J].机械工程学报,2009,45(9):201-209.
［9］ Huang Y,Lo Z Y, Du R.Minimization of the thickness variation in multi-step sheet metal stamping[J]. Journal of Materials Processing Technology，2006, 177: 84-86.
［10］苏晓红，吴建军. 响应面法在多次拉深成形参数优化中的应用[J]. 锻压装备与制造技术,2009, 44（1）：56-59.
［11］王涛，陶薇. 应用正交试验设计提高拉深件的成形质量[J]. 锻压技术, 2008, 33（5）:48-50.

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