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분할된 ALE 방법에 의한 평금형 열간압출의 3차원 유한요소해석
강연식,양동열,Kang, Yeon-Sick,Yang, Dong-Yol 대한기계학회 1997 大韓機械學會論文集A Vol.21 No.11
In the analysis of metal forming process, ALE(Arbitrary Lagrangian Eulerian) finite element methods have been increasingly used for the capability to control mesh independently from material flow. The methods can be divided into two groups i.e., coupled and split formulations. In the present work, the split ALE formulation is used for computational efficiency. A split ALE finite element method developed for rigid-viscoplastic materials and applied to the analysis of hot square die extrusion. Since thermal state greatly affects the product quality, an ALE scheme for temperature analysis is also presented. As computational examples, profile shapes as square and cross-like sections are chosen.