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An extraction of the natural frequencies and mode shapes of marine risers by the method of differential transformation

机译：用微分变换法提取海洋立管的固有频率和振型

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摘要

In the offshore oil and gas industry, marine risers are critical conductors connecting platforms to the wellheads at the seabed for drilling, production and transmission, the vortex-induced vibration design of which requires accurate knowledge of the natural frequencies and mode shapes. The vibration characteristics of marine risers are re-examined in this paper using the method of differential transformation, which is relatively new technique capable of dealing with eigenvalue problems rather efficiently. Natural frequencies and mode shapes of marine risers are examined for various boundary conditions, and solutions are compared with numerical and experimental results published in the literature where available.
机译：在海上石油和天然气工业中，船用立管是将平台连接到海底井口以进行钻井，生产和传输的关键导体，其涡流诱发的振动设计需要对固有频率和振型有准确的了解。本文采用微分变换的方法对海洋立管的振动特性进行了重新检验，这是一种较新的技术，能够相当有效地处理特征值问题。在各种边界条件下检查船用立管的固有频率和振型，并将解决方案与文献中可用的数值和实验结果进行比较。

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  • 来源
    《Computers & Structures》 |2009年第22期|1384-1393|共10页
  • 作者

    Yanfei Chen; Y.H. Chai; Xin Li; Jing Zhou;

  • 作者单位

    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian U6023, China;

    Department of Civil and Environmental Engineering, University of California, Davis, CA 95616, USA;

    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian U6023, China;

    State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian U6023, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    marine risers; differential transformation; natural frequencies; mode shapes;

    机译：海洋立管;微分变换固有频率;模式形状;

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