Buckling analysis of subsea pipeline with idealized corrosion defects using homotopy analysis method

被引：31

作者：

Chen, Yanfei ^{[1
,2
,3
]}

Dong, Shaohua ^{[1
]}

Zang, Zhipeng ^{[3
]}

Ao, Chuan ^{[1
]}

Liu, Hao ^{[1
]}

Gao, Modi ^{[1
]}

Ma, Shang ^{[1
]}

Zhang, Enyong ^{[4
]}

Cao, Jing ^{[4
]}

机构：

[1] China Univ Petr, Sch Mech & Transportat Engn, Beijing 102249, Peoples R China

[2] Dalian Univ Technol, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China

[3] Tianjin Univ, State Key Lab Hydraul Engn Simulat & Safety, Tianjin 300072, Peoples R China

[4] CNOOC Res Inst, Beijing 100024, Peoples R China

来源：

OCEAN ENGINEERING | 2021年 / 234卷

基金：

美国国家科学基金会;

关键词：

Subsea pipeline; Corrosion defect; Buckling pressure; Homotopy analysis method; Finite element method; RANDOM PITTING DEFECTS; COLLAPSE PRESSURE; PLASTIC COLLAPSE; PROPAGATION; FAILURE; PIPES;

D O I：

10.1016/j.oceaneng.2021.108865

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

Comprehension on the bucking failure of corroded subsea pipelines is important. Those corrosion defects usually exhibit complex geometries and will complicate the buckling failure behavior of subsea pipeline under external pressure. In this paper, a semi-analytical approach named homotopy analysis method (HAM) is introduced to investigate the buckling failure of subsea pipeline with three idealized corrosion defects. The proposed solutions are proven to be capable of giving accurate and efficient predictions in comparison with finite element result as well as analytical results. Numerical examples indicate that corrosion shapes have pronounced effect on the buckling pressure as well as buckling mode of pipeline with severe corrosion defects and those cases should be carefully concerned in the structural integrity assessment of subsea pipelines.

引用

页数：10

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