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한승상(S. S. Han),엄재근(J. G. Eom),장성민(S. M. Jang),이민철(M. C. Lee),전만수(M. S. Joun),강신준(S. J. Kang),손요헌(Y. H. Son) 한국소성가공학회 2009 한국소성가공학회 학술대회 논문집 Vol.2009 No.5
In this paper, limitation of rigid-plastic finite element method caused from rigid-plasticity assumption and numerical problem is investigated in detail and a useful scheme is proposed to get rid of the plastic deformation in rigid or elastic region, A typical example of a possible long bar extrusion process is given, which may be impossible to simulate without using the proposed scheme. The scheme is successfully applied to simulating the long bolt forging process.