• Transactions of Materials Processing
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• v.11 no.4
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• pp.295-301
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• 2002

Recently, design concepts of vehicle will have to consider the safty and economy of fuel consumtion. The hydroforming technology has applied to increase strength, and to decrease weight, cost and part count. The hydroforming has been recognized as general technique in automotive industry. This paper deals with the trends of automotive application of hydroforming, new hydroforming technologies, facilities.

• Journal of the Korean Society for Precision Engineering
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• v.17 no.4
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• pp.38-47
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• 2000

Recently, finite element method has been used as an effective tool in the design process of sheet metal forming. In the present study, an implicit method and an explicit method have been developed for 2D analysis and 3D analysis, respectively, and applied to several processes including plane strain draw bending and TWB sqaure cup drawing. Also, commercial codes are used for geometrically complex problems, such as tube hydroforming, "L" cup deep drawing and side frame forming. In this paper, basic formulations used in the methods are introduced and results obtained from the applications are discussed.discussed.