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  1. 防災科研関係論文

Investigation on Failure Behavior of Two-Elbow Piping System Models Made of the Simulation Material Under Excessive Seismic Loads

https://nied-repo.bosai.go.jp/records/4818
https://nied-repo.bosai.go.jp/records/4818
f1c90d18-9456-46e3-aacd-360692d6f97c
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Investigation on Failure Behavior of Two-Elbow Piping System Models Made of the Simulation Material Under Excessive Seismic Loads
言語
言語 eng
著者 Izumi Nakamura

× Izumi Nakamura

en Izumi Nakamura

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Naoto Kasahara

× Naoto Kasahara

en Naoto Kasahara

Search repository
抄録
内容記述タイプ Other
内容記述 <title>Abstract</title>
To investigate the failure behavior of piping systems under excessive seismic loads, shaking table tests on piping system models made of a simulation material have been executed. The simulation material adopted in the experiment was lead-antimony (Pb-Sb) alloy. The piping system model was composed of two elbows made of Pb-Sb alloy, one additional mass, and two fixed anchors. Input motions were sinusoidal wave. The failure modes of the piping system were examined by varying the additional mass and frequency of the input sinusoidal wave.


Through the excitation tests, the failure mode which was named as “ratchet and subsequent collapse” was obtained successfully. The result which was classified as “no failure after 500 cycles” was also obtained. It was found that the occurrence of the failure depended on the ratio of the input frequency to the specimen’s natural frequency, and the ratio of additional mass weight to the limit mass weight. Though the effect of higher modes on the failure behavior was necessary to be more investigated, it seemed that the tendency of dominant failure behavior was similar to that of the single-elbow specimen investigated in the previous study.


Moreover, it was confirmed that the experimental approach to use a simulation material was applicable for piping system model with multiple elbows.
言語 en
書誌情報 en : Volume 3: Design and Analysis

発行日 2020-08-03
出版者
言語 en
出版者 American Society of Mechanical Engineers
DOI
関連識別子 10.1115/pvp2020-21140
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