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Application and Verification of Virtual Manufacturing to Hot Press Forming Process with Boron Steel  

Suh, Yeong-Sung (Department of Mechanical Engineering, Hannam University)
Ji, Min-Wook (Department of Mechanical Engineering, Hannam University)
Lee, Kyung-Hoon (Solution-Lab Company)
Kim, Young-Suk (Department of Mechanical Engineering, Kyungpook University)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.18, no.2, 2010 , pp. 61-66 More about this Journal
Abstract
A virtual manufacturing system that is composed of JMatPro, a material modeler and $DEFORM^{TM}$-HT, a finite element package is applied to the hot press forming process: high temperature material properties for each phase such as flow stress, elastic modulus, Poisson's ratio, thermal expansion coefficient, in addition to TTT curve are predicted by JMatPro and taken into $DEFORM^{TM}$-HT to predict the material behavior considering phase transformation and heat transfer simultaneously. In order to verify the accuracy of computation, the residual stress and the springback were compared with the experimental measurements. Both the predicted and measured principal residual stresses and amount of springback were in good agreement. It was also found that the residual stresses generated from hot press forming are not negligible as it has been generally assumed, although the springback deformation is quite small.
Keywords
Hot press forming; Virtual manufacturing; Boron steel; Material properties modeler; Elastic-plastic finite element analysis; Residual stress; Instrumented indentation test; JMatPro; $DEFORM^{TM}$-HT;
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Times Cited By KSCI : 1  (Citation Analysis)
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