http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 권기환 (검색결과 342 건)
- 무료
- 기관 내 무료
- 유료
-
-
-
-
-
-
대변형 해석에서 평활화를 이용한 사면체 요소망의 재조성
권기환,채수원,신상엽,Gwon, Gi-Hwan,Chae, Su-Won,Sin, Sang-Yeop 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.9
The remeshing is a method to replace a distorted mesh by a new mesh without interrupting the finite element calculation. The remeshing procedure in this paper refers to the rezoning, for which a sm oothing process is developed to alleviate the distortions of mesh. In the paper, an automatic finite element rezoning system with tetrahedral elements for large deformation analysis has been developed. Our smoothing process is composed of two steps, a surface smoothing and a volume smoothing. In the surface smoothing, checking the dihedral angle and projection on surface patch reduced the change of shape and nodes penetrating die. The constrained Laplacian smoothing has been employed for the volume smoothing process. The state variables are mapped from old mesh to new mesh by using volume coordinates within a tetrahedral element. All these procedures have been linked to the NIKE3D program As illustrated in the examples the overall strategy ensures a robust and efficient rezoning scheme for finite element simulation of metal-forming processes.
-
순수 지르코늄의 ECAP공정에서 금형의 변형 및 채널각이 재료의 변형거동에 미치는 영향
권기환,채수원,권숙인,김명호,Gwon, Gi-Hwan,Chae, Su-Won,Gwon, Suk-In,Kim, Myeong-Ho 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.11
Among severe plastic deformation processes, ECAP has drawn much attention due to its advantages including ultra-fine grain size material production. In this paper, ECAP process with pure -Zirconium is investigated due to its applicability to nuclear reactors. The finite element method is employed to investigate the deformation behavior of materials during ECAP process. In particular, effects of process parameters such as die deformation and channel angles on the material behaviors have been investigated. Experimental studies have also been performed to verify the numerical results.
-
-
-
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
