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Static and dynamic analysis on upheaval buckling of unburied subsea pipelines

机译：未埋海底管道大变形屈曲的静态和动态分析

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摘要

Upheaval buckling is one of the most common problems threatening the safe operation of subsea pipelines, which is trigged by the increasing of temperature and inner pressure. In order to predict the critical buckling temperature and post buckling path of upheaval buckling, ABAQUS is used to build four kinds of numerical models, and they are static and dynamic models both in 2D and 3D. Two analysis procedures which combine the static and dynamic processes are applied to aforementioned models. The results show good agreement with existing test data. For snap upheaval buckling, pipelines have two different buckling modes. Such buckling modes are not found in experiments. In addition, only 3D dynamic model can catch such buckling modes. For bifurcation upheaval buckling, predicted buckling temperatures of those models are all acceptable with an error of 5%. (C) 2015 Elsevier Ltd. All rights reserved.
机译：剧变屈曲是威胁海底管道安全运行的最常见问题之一，而温度和内部压力的升高则触发了这一问题。为了预测剧变屈曲的临界屈曲温度和屈曲后路径，ABAQUS用于建立四种数值模型，它们分别是2D和3D的静态和动态模型。结合了静态和动态过程的两种分析程序被应用于上述模型。结果表明与现有测试数据吻合良好。对于快速剧变屈曲，管道具有两种不同的屈曲模式。在实验中找不到这种屈曲模式。此外，只有3D动态模型才能捕获此类屈曲模式。对于分叉剧变屈曲，这些模型的预测屈曲温度均可接受，误差为5％。 （C）2015 Elsevier Ltd.保留所有权利。

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  • 来源
    《Ocean Engineering》 |2015年第1期|249-256|共8页
  • 作者

    Wang Zhe; Zhi Huachen; Liu Hongbo; Bu Yidu;

  • 作者单位

    Tianjin Univ, Dept Civil Engn, Tianjin 300072, Peoples R China;

    Tianjin Univ, Dept Civil Engn, Tianjin 300072, Peoples R China|Tianjin Univ, Minist Educ, Key Lab Coast Civil Struct & Safety, Tianjin 300072, Peoples R China;

    Tianjin Univ, Dept Civil Engn, Tianjin 300072, Peoples R China;

    Univ London Imperial Coll Sci Technol & Med, Dept Civil & Environm Engn, London SW7 2AZ, England;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Subsea pipeline; Upheaval buckling; Snap buckling; Finite element (FE);

    机译：海底管道;上屈曲;卡扣屈曲;有限元（FE）;

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