Experimental study on forming behavior of high-strength steel sheets under electromagnetic pressure

To experimentally investigate the forming behavior of automotive high-strength steel sheets under electromagnetic pressure, three high-strength steel sheets (DP780, DP980, and CP1180) were freely formed into hemi-elliptical protrusions. The experiments were performed using a spiral flat coil and ope...

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Bibliographic Details
Published in:Proceedings of the Institution of Mechanical Engineers. Part B, Journal of engineering manufacture Journal of engineering manufacture, 2015-04, Vol.229 (4), p.670-681
Main Authors: Kim, Daeyong, Park, Hyeon Il, Lee, Jinwoo, Kim, Ji Hoon, Lee, Myoung-Gyu, Lee, Youngseon
Format: Article
Language:English
Subjects:
Automotive engineering
Behavior
Electromagnetism
Experiments
Pressure
Steel
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Summary:To experimentally investigate the forming behavior of automotive high-strength steel sheets under electromagnetic pressure, three high-strength steel sheets (DP780, DP980, and CP1180) were freely formed into hemi-elliptical protrusions. The experiments were performed using a spiral flat coil and open-cavity die. Aluminum driver plates were utilized for improving the forming efficiency. The forming behavior was investigated by evaluating characteristics such as peak height, limit height, and springback angle for various charge voltages. The effect of the aluminum driver plate on the forming behavior of the high-strength steel sheet was also observed.
ISSN:0954-4054
2041-2975
DOI:10.1177/0954405414538258