Transactions of Materials and Heat Treatment

Title：Comparative study of real drawbead and equivalent drawbead

Authors： MA Rong-guo1 2 QIU Xiao-gang2 LIAO Pi-bo1 (1.Faculty of Mechanical and Electrical Engineering Kunming University of Science and Technology Kunming 650093 China 2.Panzhihua Iron and Steel Research Institute Panzhihua 617000 China)

Unit：

KeyWords： FE analysis real drawbead quivalent drawbead

ClassificationCode：TG386

year,vol(issue):pagenumber：2008,33(3):36-38

Abstract：

The dynamic explicit finite element software eta/Dynaform was used to simulate the real and equivalent drawbead models,analyse the influence of the blank hold force(BHF) and virtual velocity on blank's deformation behaviour after passing through drawbead,and make the comparison of the FE simuliation results.The simulation results were validated by experiments.The study shows that the equivalent drawbead model can not precisely simulate the blank's behaviour when it passes the real drawbead.When applied the real drawbead model,the influence of BHF was bigger than equivalent drawbead and the proper range of virtual velocity was obtained at the same time.

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Reference：

[1]LS-DYNA Keyword Manual.Livermore Software TechnologyCorporation[Z].Livermore,1999.
[2]印雄飞,何丹农,彭颖红,等.板料成形有限元分析中的等效拉延筋模型[J].锻压机械,1999,(5):49-51.

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