| Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed | |
Xu LG(许雷阁) ; Lin M(林缅); Lin, M (reprint author), Chinese Acad Sci, Inst Mech, Beijing, Peoples R China.
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| Source Publication | OCEAN ENGINEERING
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| 2017-11-15 | |
| Volume | 145Pages:344-358 |
| ISSN | 0029-8018 |
| Abstract | For pipelines on uneven seabed, upheaval buckling may occur if the axial compressive force reaches the critical force of upheaval buckling. The critical axial force is sensitive to the seabed undulation, However, the effect of the seabed undulation on the critical force has not been completely discussed. Moreover, effect of the initial stress which accumulates in the pipe wall when the pipeline conforms to the seabed undulation under self-weight has been rarely examined. This paper mainly focuses on the effect of the initial stress. Using numerical tools developed with the Vector Form Intrinsic Finite Element (VFIFE) method, effect of the initial stress is proved significant. Subsequently with the theory of dimensional analysis, a formula of the critical axial force is derived. This formula covers the dimensionless undulation length and the Out-of-Straight (OOS) of the seabed undulation. Considering three seabed undulation shapes, coefficients in the formulas are determined with numerical results from the VFIFE simulations. Finally, the proposed formulas are proved applicable for pipes with different properties and within the error range of +/- 10% for pipelines in continuous contact with the seabed in a large dimensionless scope. |
| Keyword | The Vfife Method Dimensional Analysis Upheaval Bucking Uneven Seabed |
| DOI | 10.1016/j.oceaneng.2017.09.013 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000414886600030 |
| WOS Keyword | SUBSEA PIPELINES ; BURIED PIPELINES ; MODEL |
| WOS Research Area | Engineering ; Oceanography |
| WOS Subject | Engineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography |
| Funding Organization | Key Instrument Developing Project of Chinese Academy of Sciences(ZDYZ2012-1-08-02) ; National High-tech R&D Program of China(2006AA09Z301) ; National Natural Science Foundation of China(11302235) |
| Department | LMFS海洋环境与工程(LEM) |
| Classification | 一类 |
| Ranking | 1 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/71931 |
| Collection | 流固耦合系统力学重点实验室 |
| Corresponding Author | Lin, M (reprint author), Chinese Acad Sci, Inst Mech, Beijing, Peoples R China. |
| Recommended Citation GB/T 7714 | Xu LG,Lin M,Lin, M . Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed[J]. OCEAN ENGINEERING,2017,145:344-358. |
| APA | 许雷阁,林缅,&Lin, M .(2017).Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed.OCEAN ENGINEERING,145,344-358. |
| MLA | 许雷阁,et al."Numerical study on critical axial forces of upheaval buckling for initially stressed submarine pipelines on uneven seabed".OCEAN ENGINEERING 145(2017):344-358. |
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| JouArt-2017-182.pdf（3609KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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