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Indexed by:期刊论文

Date of Publication:2009-11-01

Journal:COMPUTERS & STRUCTURES

Included Journals:SCIE、EI、Scopus

Volume:87

Issue:21-22

Page Number:1384-1393

ISSN No.:0045-7949

Key Words:Marine risers; Differential transformation; Natural frequencies; Mode shapes

Abstract: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.