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Title: An Experimental Study of Springback for Dual Phase Steel and Conventional High Strength Steel.
Document #: SAE 2001-01-3106
Presented at: International Body Engineering Conference & Exposition
(IBEC),
October 2001, Detroit MI.
Author: Aleksy Konieczny & Ming Shi, U. S. Steel; Chang Du,
DaimlerChrysler.
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Abstract: An experimental study of springback was conducted for a hat channel section with varying cross sections and controlled gap between punch and die. The channel section was formed in a single step forming process with upper pressure pad. DP590 steel was compared to a group of high strength steels (HSS), e.g. HSLA270, 340, and 420. In addition, sidewall curl phenomenon was studied utilizing bending under tension test. This paper describes methodology of experiment and discusses springback related results. It also offers recommendations that can be applied to die-punch gap control or material substitution situations. The results of this investigation can be used to verify accuracy of springback predictions in finite element analysis
(FEA).
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