Suppression of Springback for Longitudinally Curved Part by Imparting In-Plane Compression Stress in Press Forming
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- Shinmiya Toyohisa
- Forming Technology Research Department, JFE Steel Corp.
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- Yamasaki Yuji
- Forming Technology Research Department, JFE Steel Corp.
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- Miyake Hiroto
- Forming Technology Research Department, JFE Steel Corp.
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- Hiramoto Jiro
- Steel Research Laboratory, JFE Steel Corp.
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抄録
<p>Dimensional accuracy defects caused by springback behavior are one of the serious problems in press forming for automobile parts using ultrahigh-strength steel sheets. In particular, in hat-shaped parts curved in the longitudinal direction, camber back, which is a kind of springback behavior, occurs. In this study, in order to suppress camber back, a new press-forming method that can impart in-plane compression stress was investigated using parts with a simple hat-shaped section and a W-shaped section simulating automotive parts. As a result, it was found that the amount of camber back decreases on applying compression stress in the longitudinal direction, because the bending moment caused by the difference between stress in the punch bottom area and that in the flange area was reduced. It was also clarified that the sensitivity of the amount of camber back to tensile strength was lowered when this forming method was used. Furthermore, a forming method in which buckling in both ends under a high compression condition can be prevented was developed.</p><p> </p><p>This Paper was Originally Published in Japanese in J. JSTP 60 (2019) 161–166.</p>
収録刊行物
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- MATERIALS TRANSACTIONS
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MATERIALS TRANSACTIONS 63 (3), 304-310, 2022-03-01
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390572664475536256
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- NII論文ID
- 130008163727
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- NII書誌ID
- AA1151294X
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- ISSN
- 13475320
- 13459678
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- NDL書誌ID
- 032007346
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
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- 抄録ライセンスフラグ
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