- 다단인발공정에서 후미인장응력이 중심파괴에 미치는 영향
- ㆍ 저자명
- 이성원,김민철,심규하,전만수,Lee. S.W.,Kim. M.C.,Shim. G.H.,Joun. M.S.
- ㆍ 간행물명
- 소성가공
- ㆍ 권/호정보
- 2012년|21권 5호|pp.291-297 (7 pages)
- ㆍ 발행정보
- 한국소성가공학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
In this paper, the effect of back tension in multi-pass drawing or wiredrawing on the central bursting defect is investigated using finite element predictions. A rigid-plastic finite element method was used together with the McClintock damage model. Central bursting defects under different back tension stress values ranging from 0% to 20% of the yield strength of the material were predicted and they were compared to understand the effect of the back tension stress values on the central bursting defect. It is found that the level of back tension has a strong influence on the cumulative damage. Thus, higher back tension raises the possibility of the central bursting defect occurring, even though it decreases the interfacial pressure between the die and the work piece.