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Title:Optimization on drawing process parameters of an automobile taillight installation reinforcement
Authors: Chen Jun′an 
Unit: Chongqing Resources and Environmental Protection of University 
KeyWords: drawing  drawbeads  blank holder force  taillight installation reinforcement  response surface method  multi-objective optimization 
ClassificationCode:TG386
year,vol(issue):pagenumber:2019,44(11):56-63
Abstract:
For the wrinkling and cracking defects of an automobile taillight installation reinforcement during the drawing process, two schemes of full-enclosed sectional drawbeads and local single-section drawbeads were designed. In order to judge the risk of cracking and wrinkling of formed parts better, the maximum thinning rate (Y1) and the wrinkling trend function (Y2) were used as evaluation criteria, and the relevant response functions were established by the method of central composite test and numerical simulation. The optimized process parameters of drawing process with local single-section drawbeads were obtained by multi-objective optimization, namely, the resistance coefficients of drawbeads X1=0.14, X2=0.30,X3=0.32, X4=0.39, and the blank holder force F=200 kN. Then, the effectiveness of the multi-objective optimization method with the maximum thinning ratio (Y1) and wrinkle trend function (Y2) as evaluation criteria and the resistance coefficients of drawbeads and blank holder force as optimization factors was verified by numerical simulation and actual test results. By comparing the layout schemes of drawbeads, using the local single-section drawbeads not only obtains qualified parts, but also reduces the workload during the die development.
Funds:
重庆市教育委员会资助项目(173305)
AuthorIntro:
陈俊安(1982-),男,学士,讲师,E-mail:cjancq@163.com
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