Multi-objective Optimization of Parameters for Forming Process of Drawing and Hole-Flanging Workpiece

Abstract

Abstract:

To optimize the drawing and flanging process, three objective functions for fracture, wrinkle and thickness varying were built using theoretical analysis and numerical simulations. In order to minimize the defects of sheet metal forming simultaneously, a synthetical method was developed based on the multiobjective optimization technique. In this method, taking the air conditioner front panel as an example, response surface models were created by combining experimental design and data handling with Matlab. Then, an improved fast non-dominated sorting genetic algorithm was used to obtained a set of Pareto front, which minimized rupture, wrinkle and uneven thickness integrally. The results of numerical simulation and production test show that the
optimization model is valid and practical.

Key words:sheet metal stamping,drawingflanging,multiobjective optimization design,response surface methodology,improved genetic algorithm

CLC Number:

TG 386.41

ZHOU Jie1,DAI Hong1,CHEN Yongfeng1,LU Junjiang2,YAO Xiaobing2. Multi-objective Optimization of Parameters for Forming Process of Drawing and Hole-Flanging Workpiece[J]. Journal of Shanghai Jiaotong University, 2014, 48(03): 412-416.

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