한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)
- 한국소성가공학회 2007년도 춘계학술대회 논문집
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- Pages.258-261
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- 2007
마찰교반용접(FSW) 된 알루미늄 합금(AA6111-T4, AA5083-H18) 및 DP강 판재의 인장 실험시 파단 현상 해석
Analysis of Failure Phenomena in Uni-axial Tension Tests of Friction Stir Welded AA6111-T4, AA5083-H18 and DP-Steel
- 박상준 (서울대학교 재료공학부) ;
- 엄기문 ((주)르노 삼성 자동차 연구소) ;
- 마닝 (서울대학교 재료공학부) ;
- 안강환 (서울대학교 재료공학부) ;
- 정경환 (서울대학교 재료공학부) ;
- ;
- ;
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- 정관수 (서울대학교 재료공학부)
- Park, S. ;
- Um, K. ;
- Ma, N. ;
- Ahn, K. ;
- Chung, K.H. ;
- Kim, Chong-Min ;
- Okamoto, Kazutaka (General Motors R&D Center) ;
- Wagoner, R.H. (Hitachi America Ltd.) ;
- Chung, K. (Ohio State University)
- 발행 : 2007.05.10
초록
Failure phenomena in uni-axial tension test were experimentally and numerically investigated for AA6111-T4, AA5083-H18 and DP-Steel, which were friction-stir welded with the same and different thicknesses. Forming limit diagram(FLD) was measured using hemispherical dome stretching tests for base materials and also predicted by Hill's bifurcation and M-K theories for welded areas. Finite element simulations well predicted hardening behaviors, failure locations as well as failure patterns for the uni-axial tension tests especially utilizing very fine meshes and FLD along with stress softening.
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