IMECH-IR  > 流固耦合系统力学重点实验室
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.
Source PublicationOCEAN ENGINEERING
2017-11-15
Volume145Pages:344-358
ISSN0029-8018
AbstractFor 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.
KeywordThe Vfife Method Dimensional Analysis Upheaval Bucking Uneven Seabed
DOI10.1016/j.oceaneng.2017.09.013
Indexed BySCI ; EI
Language英语
WOS IDWOS:000414886600030
WOS KeywordSUBSEA PIPELINES ; BURIED PIPELINES ; MODEL
WOS Research AreaEngineering ; Oceanography
WOS SubjectEngineering, Marine ; Engineering, Civil ; Engineering, Ocean ; Oceanography
Funding OrganizationKey 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)
DepartmentLMFS海洋环境与工程(LEM)
Classification一类
Ranking1
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/71931
Collection流固耦合系统力学重点实验室
Corresponding AuthorLin, 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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