Contact pressure prediction in sheet metal forming using finite element analysis
Pereira, M. P., Yan, W. and Rolfe, B. F. 2008, Contact pressure prediction in sheet metal forming using finite element analysis, in IDDRG 2008 : Proceedings of the IDDRG 2008 Conference : Best in class stamping, 16-18 June 2008, Olofström, Sweden, Industriellt utvecklingscentrum i Olofström AB, Olofström, Sweden, pp. 361-371.
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Tool wear has become a significant issue associated with the forming of high strength sheet steels in the automotive industry. In order to combat this problem, recent research has been devoted to utilizing the contact results obtained from current sheet metal forming software predictions, in order to develop/apply tool wear models or tool material selection criteria for use in the stamping plant. This investigation aims to determine whether a specialized sheet metal forming software package can correctly capture the complex contact conditions that occur during a typical sheet metal stamping process. The contact pressure at the die radius was compared to results obtained using a general-purpose finite element software package, for a simple channel-forming process. Although some qualitative similarities between the two predictions were observed, it was found that significant differences in the magnitude and distribution of the contact pressure exists. The reasons for the discrepancies in results are discussed with respect to the simplifications and assumptions adopted in the finite element model definitions, and with regards to other results available in the literature.
Field of Research
091399 Mechanical Engineering not elsewhere classified
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