Crack Propagation Analysis of High Strength Steels with Isogeometric Analysis and Ductile Failure Model under High Stress Triaxiality State
高応力三軸度状態を考慮した延性破断モデルとIsogeometric解析による高強度鋼板のき裂進展解析
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20254166
- Paper/Info type
- Journal of Society of Automotive Engineers of Japan
Vol.79 No.3
- Pages
- 114-120(Total 7 p)
- Date of publication
- Mar 2025
- Publisher
- JSAE
- Language
- Japanese
Detailed Information
| Category(J) | ホットトピックス Translation |
|---|---|
| Category(E) | Hot Topics |
| Author(J) | 1) 西 紳之介, 2) 松野 崇 |
| Author(E) | 1) Shinnosuke Nishi, 2) Takashi Matsuno |
| Affiliation(J) | 1) 本田技研工業, 2) 鳥取大学 |
| Abstract(J) | 本誌では、高強度鋼板のき裂進展解析のために、3次の非構造スプラインソリッド要素を用いたIsogeometric解析（IGA）を採用した。また、2軸引張状態の応力三軸度を超える範囲の破断閾値を考慮した延性破断モデルを作成し、IGAに導入した。これにより、実際のテストのき裂進展を良好に再現する結果が得られることが分かった。 Translation |
| Abstract(E) | For crack propagation analyses, it is important to represent the local deformation of automotive body structures during crash with high accuracy and to predict the failure at high stress triaxiality. In this paper, crack propagation analyses of high-strength steel were performed using Isogeometric analysis（IGA）with third order unstructured spline solid elements and ductile fracture thresholds under high stress triaxiality obtained by small round bar tensile experiment. The results of IGA showed the high correlation for crack propagation with the experiment and behavior after fracture initiation. |
