소성유동선도 관점에서의 AFDEX2D와 3D의 예측 결과 비교

In this paper, finite element predictions obtained by AFDEX 2D and 3D are compared with emphasis on metal flow lines as well as final shapes. AFDEX 2D employs the numerically clear quadrilateral finite elements with the reduced integration scheme while AFDEX 3D is based on the tetrahedral MINI-elements, that is, they are theoretically different. Several axi-symmetric or plane strain processes are tested to reveal the similarity and difference between 2D and 3D predictions. It has been shown that there exist a distinct difference between them and that they can be negligible from the standpoint of engineering applications.