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Comparison of Failure Modes of Piping Systems With Wall Thinning Subjected to In-Plane, Out-of-Plane, and Mixed Mode Bending Under Seismic Load: An Experimental Approach
https://nied-repo.bosai.go.jp/records/4784
https://nied-repo.bosai.go.jp/records/4784bb75841b-2e90-49ca-8ec3-6f8249476109
Item type | researchmap(1) | |||||||||||
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公開日 | 2023-03-30 | |||||||||||
タイトル | ||||||||||||
言語 | en | |||||||||||
タイトル | Comparison of Failure Modes of Piping Systems With Wall Thinning Subjected to In-Plane, Out-of-Plane, and Mixed Mode Bending Under Seismic Load: An Experimental Approach | |||||||||||
言語 | ||||||||||||
言語 | eng | |||||||||||
著者 |
Izumi Nakamura
× Izumi Nakamura
× Akihito Otani
× Masaki Shiratori
|
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抄録 | ||||||||||||
内容記述タイプ | Other | |||||||||||
内容記述 | Pressurized piping systems used for an extended period may develop degradations such as wall thinning or cracks due to aging. It is important to estimate the effects of degradation on the dynamic behavior and to ascertain the failure modes and remaining strength of the piping systems with degradation through experiments and analyses to ensure the seismic safety of degraded piping systems under destructive seismic events. In order to investigate the influence of degradation on the dynamic behavior and failure modes of piping systems with local wall thinning, shake table tests using 3D piping system models were conducted. About 50% full circumferential wall thinning at elbows was considered in the test. Three types of models were used in the shake table tests. The difference of the models was the applied bending direction to the thinned-wall elbow. The bending direction considered in the tests was either of the in-plane bending, out-of-plane bending, or mixed bending of the in-plane and out-of-plane. These models were excited under the same input acceleration until failure occurred. Through these tests, the vibration characteristic and failure modes of the piping models with wall thinning under seismic load were obtained. The test results showed that the out-of-plane bending is not significant for a sound elbow, but should be considered for a thinned-wall elbow, because the life of the piping models with wall thinning subjected to out-of-plane bending may reduce significantly. [DOI: 10.1115/1.4001517] | |||||||||||
言語 | en | |||||||||||
書誌情報 |
en : JOURNAL OF PRESSURE VESSEL TECHNOLOGY-TRANSACTIONS OF THE ASME 巻 132, 号 3, p. 031001-1-031001-8, 発行日 2010-06 |
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出版者 | ||||||||||||
言語 | en | |||||||||||
出版者 | ASME-AMER SOC MECHANICAL ENG | |||||||||||
ISSN | ||||||||||||
収録物識別子タイプ | ISSN | |||||||||||
収録物識別子 | 0094-9930 | |||||||||||
DOI | ||||||||||||
関連識別子 | 10.1115/1.4001517 |