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- W3210241892 abstract "Abstract When designing and evaluating the strength of the piping system of a nuclear power plant, ductile rupture or plastic collapse is often assumed to be the limit state. However, previous studies have reported that the primary failure mode of piping systems is fatigue. Therefore, it is important to conduct a fragility assessment of the piping system under the assumption that the failure mode is fatigue. In this study, a method for calculating the strength distribution characteristics of elbow pipes based on material characteristics is proposed. The linear cumulative damage is considered as a damage assessment index to conduct a fragility assessment by assuming that fatigue occurs. The strain at the elbow pipes was calculated by finite element analysis, while the linear cumulative damage corresponding to the number of cycles was evaluated based on the strain using the Probabilistic ε-N curve. The failure probability of elbow pipes corresponding to the input acceleration was obtained under specific given parameters, and parts of the curves that compose the fragility curve are shown. The analysis results show that the 5% failure probability can be evaluated using the relationship between the failure probability and either the open or closed angle of the elbow pipes, without considering the thickness variations in the fragility assessment of elbow pipes." @default.
- W3210241892 created "2021-11-08" @default.
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- W3210241892 date "2021-07-13" @default.
- W3210241892 modified "2023-09-23" @default.
- W3210241892 title "Strength Distribution Characteristics of Elbow Pipes Considering Low Cycle Fatigue Based on Analysis" @default.
- W3210241892 doi "https://doi.org/10.1115/pvp2021-61943" @default.
- W3210241892 hasPublicationYear "2021" @default.
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