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학술저널
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대한건축학회 대한건축학회 논문집 - 구조계 大韓建築學會論文集 構造系 第23卷 第9號
발행연도
2007.9
수록면
55 - 63 (9page)

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This paper focuses on the finite element simulation of nine full-scale models of performance, buckling restrained braces(BRBs) using the ABAQUS solver and both residual stress and initial imperfection are taken into consideration. It was used to predict the results obtained from one of all large-scale fabricated BRBs tested in the department of structural engineering of University of California at San Diego(2003). To provide enough information for a reliable and simple resisting forces evaluation for such models, a total of nine BRBs with a wide range of parameters was analyzed using the same finite element model. The parameters included the unconstrained length and the area of section. Consequently, the results of analysis included the following : Resisting forces in FEA was contributed approximately errors of less than 2 percent. When this result was compared with the existing studies, it was shown that the reliable models had used in this study. Moreover, a proposed equation of resisting force indicated by Pawell(2003) was satisfied in the numerical model 6 and 7. However, other equation indicated by Watanabe(1988) was shown that resisting force less than 85 percent. An unconstrained length in both side is relative to the effects of energy dissipation and resisting forces. Therefore, the best performing BRBs will be one whose unconstrained length is 4.6 percent, in consideration of the reliability due to connection. The behaviors and failure modes were very much the same as those with initial imperfections. For the BRBs that failed in general buckling, the buckling of BRBs initiated at an early stage. The bending capacity resulted in an decrease in the initial imperfection that ranged over than L/500 in the numerical models.

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Abstract
1. 서론
2. 비좌굴가새의 거동원리
3. 비좌굴가새의 탄소성해석
4. 변위이력 실험결과 비교
5. 해석연구
6. 결론
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