Abstract
This study proposes FEM simulation on forward extrusion of bi-metal rod comprised of Aluminum (Core) and Copper (Sleeve). A Deform-2D commercial software with constant shear friction is used to explore the forming characteristics, such as the effective stress, the effective strain, the velocity field, the extrusion force, the die stress, the ratio of inner diameter to outer diameter at exit after the deformation (the aspect ratio). Besides the extrusion forces and the aspect ratio after the deformation obtained by FEM 2D can be compared with the upper bound method (UBM) and the experiment from Hwang [13]. It notes that the results are in a good agreement among three methods. Therefore the results from FEM 2D can be verified to be feasible from the experiment and UBM.
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