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이성원(S. W. Lee),변우성(W. S. Byeon),차상렬(S. R. Cha),김봉수(B. S. Kim),전만수(M. S. Joun) 한국소성가공학회 2011 한국소성가공학회 학술대회 논문집 Vol.2011 No.10
In this paper, case study on shape defects in cold forging is carried out using a finite element method. The representative defects are found from the related literature or industries. Two different materials, i.e., ESW105 with negligible strain hardening capability SCM435 with typical strain hardening behiviors, are tested for the same problem. The predictions of defect formation are seen through metal flow lines or state variables including effective strain and damage.