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http://dx.doi.org/10.5228/KSPP.2008.17.3.170

Process Design and Finite Element Analysis of Rectangular Cup used for Ni-MH Battery with High Aspect Ratio  

Ku, T.W. (부산대학교 항공우주공학과)
Kim, H.Y. ((주)일광캔테크)
Song, W.J. (부산대학교 산학협력단)
Kang, B.S. (부산대학교 항공우주공학과)
Publication Information
Transactions of Materials Processing / v.17, no.3, 2008 , pp. 170-181 More about this Journal
Abstract
The shape of rectangular cup used for Ni-MH(Nickel-coated Metal Hydrogen) battery for hybrid car looks quite simple, but the forming process of extruding and setting up process design are highly difficult. Furthermore, there are few concrete reports on the rectangular deep drawn cup as part of hybrid vehicles till now. In this study, process design for rectangular cup in the multi-stage deep drawing process is carried out, and FE analysis is also preformed based on the result of the process design. From the simulation result, some unexpected problems such as earing, wrinkling and excessive thickness changes of the intermediate blank occurred. To overcome these failures, a series of modification for punch shape in the forming process design are completed and applied. Considering the modified punch shape in the multi-stage deep drawing process, additional FE analysis is also carried out and the simulation result is verified in view of the deformed shape, thickness change and effective strain distribution. The result of FE analysis with the improved process design confirmed not only reducing thinning of wall and possibilities of failure but also improving the quality of drawing product through the modification of punch shape.
Keywords
Process Design; Finite Element Analysis; Multi-Stage Deep Drawing; Rectangular Cross-Sectioned Cup;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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