Method for Evaluating the Ductile Crack Propagation Properties of Steel Sheet under Tensile Stress Conditions
薄鋼板の引張負荷状態における延性き裂進展特性評価法
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- Publication code
- 20254055
- Paper/Info type
- JSAE Transaction
Vol.56 No.1
- Pages
- 183-189(Total 7 p)
- Date of publication
- Jan 2025
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | 論文 Translation |
|---|---|
| Category(E) | Paper |
| Author(J) | 1) 畑本 麻斗, 2) 島貫 広志 |
| Author(E) | 1) Asato Hatamoto, 2) Hiroshi Shimanuki |
| Affiliation(J) | 1) 日本製鉄, 2) 日本製鉄 |
| Abstract(J) | 衝突事故の際，複雑な応力条件下で初期欠陥を想定しない母材から延性破壊が起こり得る．本報では，引張応力条件下における鋼材内部からの延性き裂進展特性の評価方法を提案する．開発した試験方法と評価法の適用性について，引張破壊試験と有限要素解析の結果に基づいて議論した． Translation |
| Abstract(E) | During collisions, base metals may incur ductile fracture without evident defects under complex stress conditions. Herein, we propose a test method for evaluating the propagation behavior of internal ductile cracks in metals under tensile stress conditions. The applicability of the developed specimen to the evaluation of ductile crack propagation properties was discussed based on the results of tensile fracture tests and finite element analyses. It is found that the energy dissipated to crack propagation per unit area was constant in the tensile stress state regardless stress triaxiality conditions. |
