A simulation-based design parameter study in the stamping process of an automotive member

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This paper is concerned with the quantitative effect of design parameters on a stamped part of the autobody. The considered parameters in this paper are the blank holding force, the draw-bead force and the blank size, which greatly affect the metal flow during stamping. The indicators of formability selected in this paper are failures such as tearing, wrinkling and the amount of springback. The stamping process of the front side inner member is simulated using the finite element analysis changing the design parameters. The numerical results demonstrate that the blank holding force cannot control the local metal flow during forming although it controls the overall metal flow. The modification of the initial blank size considering the punch opening line ensures the local wrinkling and reduces the amount of springback after forming. The restraining force of draw-bead controls the metal flow in the local area and reduces the amount of excess metal. It is noted that the parametric study of design parameters such as blank holding force, the blank size and the draw-bead are very important in the process design of the complicated member. (C) 2007 Elsevier B.V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2007-07
Language
English
Article Type
Article
Citation

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, v.189, no.1-3, pp.450 - 458

ISSN
0924-0136
DOI
10.1016/j.jmatprotec.2007.02.027
URI
http://hdl.handle.net/10203/3333
Appears in Collection
ME-Journal Papers(저널논문)
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