지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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This study proposes a system reliability analysis of rack storage facilities subjected to forklift colliding events. The proposed system reliability analysis consists of two steps: the first step is to identify dominant failure modes that most contribute to the failure of the whole rack facilities, and the second step is to evaluate the system failure probability. In the first step, dominant failure modes are identified by using a simulation-based selective searching technique where the contribution of a failure mode to the system failure is roughly estimated based on the distance from the origin in the space of the random variables. In the second step, the multi-scale system reliability method is used to compute the system reliability where the first-order reliability method (FORM) is initially used to evaluate the component failure probability (failure probability of one member), and then the probabilities of the identified failure modes and their statistical dependence are evaluated, which is called as the lower-scale reliability analysis. Since the system failure probability is comprised of the probabilities of the failure modes, a higher-scale reliability analysis is performed again based on the results of the lower-scale analyses, and the system failure probability is finally evaluated. The illustrative example demonstrates the results of the system reliability analysis of the rack storage facilities subjected to forklift impact loadings. The numerical efficiency and accuracy of the approach are compared with the Monte Carlo simulations. The results show that the proposed two-step approach is able to provide accurate reliability assessment as well as significant saving of computational time. The results of the identified failure modes additionally let us know the most-critical members and their failure sequence under the complicated configuration of the member connections.
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참고문헌 (15)
참고문헌 신청
옥승용 / 2013 / 지게차 충돌 위치 및 보관물류 분포에 따른 선반구조물의거동특성분석 / 한국안전학회지 28(6):49~56
D.-S. Kim / 2013 / System Reliability Analysis using Dominant Failure Modes Identified by Selective Searching Technique / Reliability Engineering and System Safety 119:316~331
F. Moses / 1978 / Reliability Analysis Format for Offshore Structures / Proceedings of the 10th Annual Offshore Technology Conference
Y. Murotsu / 1984 / Automatic Generation of Stochastically Dominant Failure Modes of Frame Structures / Structural Safety 2:17~25
R. Ranganathan / 1987 / Generation of Dominant Modes and Reliability Analysis of Frame / Structural Safety 4:217~228
D.-S. Kim / 2013 / System Reliability Analysis using Dominant Failure Modes Identified by Selective Searching Technique / Reliability Engineering and System Safety 119:316~331
F. Moses / 1978 / Reliability Analysis Format for Offshore Structures / Proceedings of the 10th Annual Offshore Technology Conference
Y. Murotsu / 1984 / Automatic Generation of Stochastically Dominant Failure Modes of Frame Structures / Structural Safety 2:17~25
R. Ranganathan / 1987 / Generation of Dominant Modes and Reliability Analysis of Frame / Structural Safety 4:217~228
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