U-bending에서의 DP780 강판의 스프링백 거동 연구Investigation of Springback Behavior of DP780 Steel Sheets after the U-bending Process

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Sheet metal forming processes induce residual stress in the final product due to plastic deformation. The residual stress leads to elastic recovery of the formed part called springback, which causes shape errors in the final product. This error is a serious issue, especially for high strength steels, which are widely used in auto-body structures. Therefore, the evaluation of the amount of springback becomes critical for high strength steels. This paper investigates the springback behavior of DP780 steel sheets after the U-bending process using the geometry of the standard U-shape tool from the NUMISHEET’93 benchmark problem. The amounts of springback were measured as a function of the intrusion direction, forming speed and blank holding force.
Publisher
한국소성가공학회
Issue Date
2012-10
Language
Korean
Citation

소성가공, v.21, no.6, pp.384 - 388

ISSN
1225-696X
URI
http://hdl.handle.net/10203/102544
Appears in Collection
ME-Journal Papers(저널논문)
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