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논문 리스트

2016
Study on design of progressive dies for manufacture of automobile structural member using DP980 advanced high strength steel
대한기계학회
Eun-Mi Lee, Do-Sik Shim, Jong-Youn Son, 백경윤, Hi Seak Yoon, Kyoung-Bo Ro
논문정보
Publisher
Journal of Mechanical Science and Technology
Issue Date
2016-02-01
Keywords
-
Citation
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Source
-
Journal Title
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Volume
30
Number
2
Start Page
853
End Page
864
DOI
ISSN
1738-494X
Abstract
Advanced high-strength steel (AHSS) is widely used in automobile manufacturing to reduce the weight of vehicles, thereby improving fuel efficiency. However, the high yield and tensile strength of AHSS leads to a serious springback problem in the cold sheet metal forming process. This phenomenon has delayed the implementation of AHSS in vehicle parts due to the resulting negative impact on part accuracy. In this study, parameter optimization and multi-stage die compensation were conducted with Finite element (FE) analysis to develop a progressive forming process for automobile structural members using DP980. The FE simulation used the Yoshida-Uemori model to predict the springback phenomenon accurately. The key parameters that significantly influence the springback behavior were optimized using FE simulation and the Taguchi method. The simulation results were used to determine the die and mold compensation. After the parameter optimization and multi-stage die compensation, the final part was obtained with acceptable dimensional accuracy.

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