지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 저널정보
- 한국소성·가공학회 기타자료 The 8th International Conference and Workshop on numerical simulation of 3D seet metal forming processes (NUMISHEET 2011)
- 발행연도
- 2011.8
- 수록면
- 431 - 438 (8page)
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초록· 키워드
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The application of thickness gradient based necking criterion to understand the effect of weld conditions on the forming limit of TWB is explored in this paper. The weld conditions considered for the analysis are weld-base material property combination, weld orientation and weld location. Limiting Dome Height (LDH) test is simulated using PAM STAMP 2G, an elastic-plastic finite element code and limit strains of un-welded, welded blanks are predicted using thickness gradient based necking criterion. Transverse weld has insignificant effect on the limit strains when it is placed at the centre of the sheet. In the case of transverse weld placed at critical locations of the sheet, decrease in limit strains is observed. In other cases, weld properties show negligible influence on the forming limit strains of transverse welded blanks. Longitudinal weld has significant effect on the limit strains of TWB depending on the weld properties and strain path. However, the overall FLC of longitudinal welded blank is by and large similar to that of un-welded blank. Some of the simulation results are found to be consistent with the available experimental observations qualitatively.
목차
Abstract
INTRODUCTION
METHODOLOGY
RESULTS AND DISCUSSION
CONCLUSIONS
REFERENCES
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