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论文类型：期刊论文

发表时间：2009-11-01

发表刊物：COMPUTERS & STRUCTURES

收录刊物：Scopus、EI、SCIE

卷号：87

期号：21-22

页面范围：1384-1393

ISSN号：0045-7949

关键字：Marine risers; Differential transformation; Natural frequencies; Mode shapes

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. (C) 2009 Elsevier Ltd. All rights reserved.