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  1. 防災科研関係論文

Simplified elasto-plastic response analysis method of piping

https://nied-repo.bosai.go.jp/records/4793
https://nied-repo.bosai.go.jp/records/4793
a8916b2a-d761-4ff4-856c-71813d854d47
Item type researchmap(1)
公開日 2023-03-30
タイトル
言語 en
タイトル Simplified elasto-plastic response analysis method of piping
言語
言語 eng
著者 Akihito Otani

× Akihito Otani

en Akihito Otani

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Izumi Nakamura

× Izumi Nakamura

en Izumi Nakamura

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Hajime Takada

× Hajime Takada

en Hajime Takada

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抄録
内容記述タイプ Other
内容記述 When piping systems are subjected to extreme seismic excitation, they undergo a plastic deformation that produces a large damping effect via energy dissipation. Based on our studies of the damping effect of the elasto-plastic response of piping, we have presented a simplified method for predicting the elasto-plastic response of piping in PVP conferences over the last several years. Yet the elasto-plastic response of piping calculated by this method resulted in conservative predictions compared with the results of piping model excitation tests. In the proposed method, we calculate the vibration energy of piping and the dissipation energy with plastic deformation by FEM analysis and obtain the equivalent damping ratio as a ratio between the two. The equivalent damping ratio and response are interdependent and can be calculated as a pair of converged values. In this paper we report simulation results from 3D piping model excitation tests as well as the results from 2D piping model tests. The simulation method is a modified and improved version of the method reported earlier. The results obtained by the revised method more closely matched the results of the excitation tests.
言語 en
書誌情報 en : American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP

巻 472, p. 93-100, 発行日 2004
ISSN
収録物識別子タイプ ISSN
収録物識別子 0277-027X
DOI
関連識別子 10.1115/PVP2004-2264
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