Transactions of Materials and Heat Treatment

Title：Numerical simulation and parameters optimization on stamping for rear floor beam of an automobile

Authors： Mo Mingli

Unit： Chongqing Technology and Business Institute

KeyWords： floor beam stamping profile of drawing die response surface method multiobjective optimization

ClassificationCode：TG386

year,vol(issue):pagenumber：2019,44(6):41-45

Abstract：

For a rear floor beam of an automobile, its structure characteristics were analyzed, and the stamping process was designed as drawingtriming and punchingshaping and flanging. Then, the finite element analysis model was established by software Autoform. Aiming at the wrinkling and inadequate drawing phenomenon in the process of drawing,shaping and flanging for parts, the profile of drawing die was optimized for design, and an optimization method based on the response surface method was presented, that is, taking the resistance coefficient of segmented drawbead and the blank holder force as the optimization factors, and taking the maximum thinning rate and the maximum thickening rate as the objective functions. Furthermore, the fitting equation between the optimization factors and the objective functions was constructed by the response surface method, and the best parameters combination with 40% for t1，30% for t2，40% for t3 and 900 kN for Fb was obtained by solving the equation. Finally,the experiments show that the simulation results have a better consistency with the predicted results. And the qualified parts were obtained through trial production, which verified the correctness of the method.

Funds：

重庆市教委科学技术研究项目(KJ1737460)

莫明立（1973-），男，硕士，教授 E-mail：227837817@qq.com

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