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이인환(In-Hwan Lee),조해용(Hae-yong Cho),송홍기(Hong-ki Song),김지훈(Ji-Hoon Kim),서보혁(Bo-Hyuck Seo),경기현(Ki-Hyun Kyoung) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.5
Forging for spring cup of engine valve was investigated in this study. New method is needed to reduce cost and development lead time required to fix forming process of new product , that eventually can provide die, metal flow and forming loads with high confidence level. FEM could provide required detail information that could reduce trial error in advance before the actual production. By using the rigid-plastic finite element simulation, possibilities of improving former research were explored. Results generated by FEM could foresee expected material deformation in advance and made possible new forming process successfully.