Proceedings of the Korea Committee for Ocean Resources and Engineering Conference (한국해양공학회:학술대회논문집)
- 2002.05a
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- Pages.151-154
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- 2002
A Study on Plastic Zone at the Crack Tip under Cyclic Loading by FEM
유한요소법을 이용한 피로하중을 받는 균열선단의 소성영역크기에 대한 연구
- Kim, Kyung-Su (Dept. of Naval Architecture & Ocean Engineering, Inha University) ;
- Shim, Chun-Sik (Dept. of Naval Architecture & Ocean Engineering, Inha University) ;
- Lee, Wook-Jae (Dept. of Naval Architecture & Ocean Engineering, Inha University) ;
- Cho, Hyung-Min (Dept. of Naval Architecture & Ocean Engineering, Inha University)
- Published : 2002.05.17
Abstract
In this paper, the effect of the crack growth length on the plastic zone size at the crack tip and the crack growth lives of the DENT specimen under constant amplitude cyclic loading were studied. The plastic zone size was calculated by nonlinear static method in commercial finite element analysis program, MSC/NASTRAN and the crack growth lives were also calculated by using compliance function considering geometric shape in MSC/FATIGUE. The calculated plastic zone size increased proportional to the crack length. And comparison of calculated plastic zone size and crack growth lives with the experimental results shows a good agreement.
Keywords
- Plastic zone size;
- Fatigue crack growth;
- Elasto-plastic analysis;
- ESPI System;
- Finite element method
- 소성영역크기;
- 피로균열성장;
- 탄소성해석;
- 전자스팩타클패턴 간섭시스템;
- 유한요소법;