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Modeling and Simulation of Wave load on Periodic Support for Isolation system of offshore platform.

Afolalu, Sunday A. and Ajayi, O. O. and Ikumapayi, O. M. and Adejuyigbe, Samuel B. (2015) Modeling and Simulation of Wave load on Periodic Support for Isolation system of offshore platform. International Journal of Scientific & Engineering Research, 6 (5). pp. 441-447. ISSN 2229-5518

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The wave-induced dynamic load is one of the most important excitations to be dealt with in the design of offshore structures and the platforms. In order to perform a reliable design of an offshore structure, it is important to obtain an exact evaluation of its dynamic response to wave load but also to examine the ways of reducing the response. The work analyzed the effects of wave load on periodic support of isolation system of jacket offshore platform. The platform considered herein as an example to examine the effectiveness of the proposed vibration control strategy for offshore structures. In this section, a parametric study for the jacket offshore platform with installation of the periodic support to enhance isolation system due to its attenuations ability over broad frequencies and the effects of wave load on offshore jacket platforms installed with energy dissipation devices such as periodic support were presented. The offshore jacket platforms are modeled as multi-degrees-of-freedom and the general equation for fluid forces acting on a cylinder, considering the relative motion of the body in the fluid as per the Morison’s equation was applied to form the basis of modeling of the wave load and supports. The analyzes of the effects of wave load on the offshore platform especially with periodic support was considered due to its attenuations over broad frequencies. It could be realized from the result that increase in waves load varies the increase in frequency domain of the system which enhances subjection to vibration.

Item Type: Article
Uncontrolled Keywords: Platform, Isolation, Vibration, Wave, Damping
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User: Mrs Hannah Akinwumi
Date Deposited: 16 Aug 2018 08:43
Last Modified: 16 Aug 2018 08:43

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