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Second-order perturbation added mass fluctuation on vertical vibration of tension leg platforms

Total motion in waves can be considered as a superposition of the motion of the body in still water and the forces on the restrained body. In this study the effect of added mass fluctuation on vertical vibration of tension leg platforms (TLP) in the case of vibration in still water for both free and...

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Published in:	Marine structures 2006-10, Vol.19 (4), p.271-283
Main Authors:	Tabeshpour, M.R., Golafshani, A.A., Seif, M.S.
Format:	Article
Language:	English
Subjects:	Added mass fluctuation Applied sciences Buildings. Public works Computation methods. Tables. Charts Exact sciences and technology Heave vibration Hydraulic constructions Marine Offshore structure (platforms, tanks, etc.) Perturbation method Stresses. Safety Structural analysis. Stresses TLP Wave
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container_title	Marine structures
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creator	Tabeshpour, M.R. Golafshani, A.A. Seif, M.S.
description	Total motion in waves can be considered as a superposition of the motion of the body in still water and the forces on the restrained body. In this study the effect of added mass fluctuation on vertical vibration of tension leg platforms (TLP) in the case of vibration in still water for both free and forced vibration subjected to axial load at the top of the leg is presented. This effect is more important when the amplitude of vibration is large. Also this is important in fatigue life study of tethers. The structural model used here is very simple. Perturbation method is used to formulate and solve the problem. First- and second-order perturbations are used to solve the free and forced vibrations, respectively.
doi_str_mv	10.1016/j.marstruc.2007.02.001
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source	Elsevier
subjects	Added mass fluctuation Applied sciences Buildings. Public works Computation methods. Tables. Charts Exact sciences and technology Heave vibration Hydraulic constructions Marine Offshore structure (platforms, tanks, etc.) Perturbation method Stresses. Safety Structural analysis. Stresses TLP Wave
title	Second-order perturbation added mass fluctuation on vertical vibration of tension leg platforms
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