- 압력과 모멘트의 복합하중을 받는 곡관에 대한 유한요소 한계하중 해석
- ㆍ 저자명
- 오창식,김윤재,Oh. Chang-Sik,Kim. Yun-Jae
- ㆍ 간행물명
- 大韓機械學會論文集. Transactions of the Korean Society of mechanical engineers. A. A
- ㆍ 권/호정보
- 2006년|30권 5호|pp.505-511 (7 pages)
- ㆍ 발행정보
- 대한기계학회
- ㆍ 파일정보
- 정기간행물| PDF텍스트
- ㆍ 주제분야
- 기타
In the present paper, approximate plastic limit load solutions fur pipe bends under combined internal pressure and bending are obtained from detailed three-dimensional (3-D) FE limit analyses based on elastic-perfectly plastic materials with the small geometry change option. The present FE results show that existing limit load solutions for pipe bends are lower bounds but can be very different from the present FE results in some cases, particularly for bending. Accordingly closed-form approximations are proposed for pipe bends under combined pressure and in-plane bending based on the present FE results. The proposed limit load solutions would be a basis of defective pipe bends and be useful to estimate non-linear fracture mechanics parameters based on the reference stress approach.