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- W2067067580 abstract "원주 방향의 두께가 불균일한 해저배관에 대한 건전성을 검토하기 위하여 수압에 의한 소성붕괴 저항성을 평가하였다. 본 연구에서는 해저배관에 부가되는 주하중을 수압으로 설정하여 4, 8, 12 및 16%의 두께편차율을 갖는 API 5L X65와 API 5L X80 배관의 소성붕괴압력 변화에 미치는 영향을 유한요소해석을 통하여 평가하였다. 두께 편차율이 증가하면 소성붕괴압력이 감소하며 두께편차율이 동일하면 직경대 두께비가 증가함에 따라 소성붕괴 압력은 감소한다. The objective of this study was to investigate the effect of the thickness eccentricity on the collapse pressure of a subsea pipeline subjected to external pressure. The collapse behavior of the subsea pipeline containing initial imperfection was evaluated using elastic-plastic finite element (FE) analyses. API 5L X65 and API 5L X80 Pipelines with the thickness eccentricity values between 4~16% were adopted to investigate the plastic collapse under hydrostatic pressure. A parametric study was shown that the plastic collapse pressure decreased when either the thickness eccentricity or the ratio of diameter to thickness increased." @default.
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- W2067067580 date "2011-12-31" @default.
- W2067067580 modified "2023-10-18" @default.
- W2067067580 title "Effect of Thickness Eccentricity on Plastic Collapse of Subsea Pipeline under External Pressure" @default.
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- W2067067580 doi "https://doi.org/10.7842/kigas.2011.15.6.014" @default.
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