期刊
OCEAN ENGINEERING
卷 254, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.oceaneng.2022.111292
关键词
Sandwich pipe; Finite element model; Experimental verification; Collapse pressure; Simplified equation
资金
- National Natural Science Foundation of China [52171288, 51709269]
- Fundamental Research Funds for the Central Universities [20CX02410A]
- Development Fund of Shandong Key Laboratory of Oil & Gas Storage and Transportation Safety
- Brazilian Research Council (CNPq) [305657/2017-8]
- Fundacao Carlos Chagas de Amparo a Pesquisa do Rio de Janeiro-FAPERJ [202.600/2019]
This study establishes a finite element numerical model for sandwich pipe collapse prediction under external pressure, validates it through experiments, and identifies the geometric parameters, material properties, and interlayer adhesion properties that influence the collapse strength of the sandwich pipe.
Sandwich pipe with high-pressure resistance and the adequate insulation performance is a potential deepwater offshore oil and gas development solution. This paper establishes a two-dimensional finite element numerical model for sandwich pipe collapse prediction under external pressure using the finite element software ABAQUS. The developed numerical model is validated successfully using experiments in the literature. Parametric modeling is implemented with the help of the scripting language Python. A total of 3125 FEM models are established to analyze the influence of the sandwich pipe's geometric parameters, material properties, and interlayer adhesion properties on the collapse strength. The results show that the sandwich pipe's geometric parameters and core layer materials significantly influence the collapse strength. In contrast, the change of steel pipe steel grade has less influence. Moreover, the interlayer adhesion properties can significantly improve the collapse strength of the sandwich pipe. Finally, based on the numerical simulation results, a simplified equation for the collapse strength of the sandwich pipe is proposed for different core layer materials under frictionless interlayer conditions, which has an average error of 6.98% under the present assumptions.
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