書誌事項
- タイトル別名
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- Effect of Strain Gradient on Stretch Flange Deformation Limit of Steel Sheets
- ウスコウハン ノ ノビ フランジ ヘンケイ ゲンカイ ニ オヨボス ヒズミ コウバイ ノ エイキョウ
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抄録
The effect of strain gradient on the stretch flange deformation limit of steel sheets was investigated by hole expansion test under some forming conditions and by FEM. Hole expansion ratio was changed by changing initial hole diameter and punch shapes. It was clarified that limit deformation strain increases as it does not depend on initial hole diameter or punch shape, and thus strain gradient increases. The strain gradient along the direction toward the maximum principal strain did not affect limit deformation strain. The limit deformation thickness strain of the stretch flange portion could be changed by changing strain gradient. The sensitivity of the effect of strain gradient on limit deformation strain tended to increase as material yield ratio increased. These results suggest that the formability of stretch flange deformation area should be determined from not only the maximum principle strain but also the strain gradient and blanking clearance.
収録刊行物
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- 塑性と加工
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塑性と加工 51 (594), 700-705, 2010
一般社団法人 日本塑性加工学会
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詳細情報 詳細情報について
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- CRID
- 1390282681475950848
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- NII論文ID
- 130004488240
- 10026553315
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- NII書誌ID
- AN00135062
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- COI
- 1:CAS:528:DC%2BC3cXhtVyktbnM
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- ISSN
- 18820166
- 00381586
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- NDL書誌ID
- 10784248
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可