전위 셀 구성모델을 결합한 유한요소법을 이용한 3차원 등통로각압출 공정 해석 (Analysis of Three Dimensional Equal Chanel Angular Pressing by Using the Finite Element Method in Conjunction with the Dislocation Cell Based Constitutive Model)

서지정보

· 발행기관 : 대한금속·재료학회
· 수록지 정보 : 대한금속·재료학회지 / 47권 / 11호 / 699 ~ 706페이지
· 저자명 : 윤승채, 김형섭

초록

Deformation behavior of pure aluminum during equal channel angular pressing (ECAP) was
simulated using a three-dimensional version of the finite element method in conjunction with a constitutive
model based on the dislocation density and cell evolution. The three-dimensional finite element analyses for
the prediction of microstructural features, such as the variation of the dislocation density and the cell size
with the number of ECAP, are reported. The calculated stress and strain and their distributions are also
investigated for the route Bc ECAP processed pure aluminum. The results of finite element analyses are found
to be in good agreement with experimental results for the dislocation cell size. Due to the accumulation of
strain throughout the workpiece and an overall trend to saturation in cell size, a decrease of the difference
in cell size with the number of passes (1~4) was predicted.

영어초록

Deformation behavior of pure aluminum during equal channel angular pressing (ECAP) was
simulated using a three-dimensional version of the finite element method in conjunction with a constitutive
model based on the dislocation density and cell evolution. The three-dimensional finite element analyses for
the prediction of microstructural features, such as the variation of the dislocation density and the cell size
with the number of ECAP, are reported. The calculated stress and strain and their distributions are also
investigated for the route Bc ECAP processed pure aluminum. The results of finite element analyses are found
to be in good agreement with experimental results for the dislocation cell size. Due to the accumulation of
strain throughout the workpiece and an overall trend to saturation in cell size, a decrease of the difference
in cell size with the number of passes (1~4) was predicted.

참고자료

· 없음