Empirical formula of buckle propagation pressure for sandwich pipes with polymer core material

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2024-01-02 DOI:10.1016/j.marstruc.2023.103564

Guangming Fu , Shuxin Li , Pengkun Lian , Jiankun Yang , Segen F. Estefen , Baojiang Sun

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引用次数: 0

Abstract

The sandwich pipe, with its high hydraulic pressure resistance and thermal insulation properties, presents itself as a potential choice for deepwater oil and gas exploration. This study developed a 3D finite element numerical model using ABAQUS software to simulate the collapse propagation of sandwich pipes under the high external hydraulic pressure. A parametric analysis was undertaken using a numerical model, which had been calibrated by experimental tests. The study aimed to assess the contributions of material properties, such as yield strength and Young's modulus, as well as geometric dimension, to the collapse propagation behavior of the sandwich pipe. Moreover, a simplified empirical formula was formulated to research the propagation pressure of polymer sandwich pipes. The research also investigated the contribution of the interaction property between the core layer and inner/outer steel layer on the propagation pressure. An interfacial factor was incorporated into the present simplified empirical formula. The empirical formula was validated using experimental results and data from various sources, including real interlayer interactions observed during tests. The results indicate that this formula offers an accurate prediction of the propagation pressure for polymer sandwich pipes.

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聚合物芯材夹砂管道的屈曲传播压力经验公式

夹砂管具有高抗水压和隔热性能，是深水油气勘探的潜在选择。本研究使用 ABAQUS 软件开发了一个三维有限元数值模型，以模拟夹砂管在高外部水压下的塌陷扩展。通过实验测试校准的数值模型进行了参数分析。研究旨在评估材料特性（如屈服强度和杨氏模量）以及几何尺寸对夹层管道塌陷扩展行为的影响。此外，还制定了一个简化的经验公式来研究聚合物夹砂管道的传播压力。研究还探讨了芯层和内外钢层之间的相互作用特性对传播压力的影响。在本简化经验公式中加入了界面因素。利用实验结果和各种来源的数据，包括测试期间观察到的真实层间相互作用，对经验公式进行了验证。结果表明，该公式可准确预测聚合物夹层管道的传播压力。

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.