Dynamic behavior of offshore spar platforms under regular sea waves

Agarwal, Ankit; Jain, Arvind K.

doi:10.1016/s0029-8018(02)00034-3

Cited by 66 publications

(31 citation statements)

References 7 publications

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“…Based on the catenary equation [18], the nonlinear relationship between the mooring force and the displacement is solved by an iterative method. For any freely hanging part, the horizontal and the vertical projections are (Fig.…”

Section: Catenary Theorymentioning

confidence: 99%

Comparisons of internal solitary wave and surface wave actions on marine structures and their responses

Song

Teng

Gou

et al. 2011

Applied Ocean Research

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Section: Catenary Theorymentioning

confidence: 99%

Comparisons of internal solitary wave and surface wave actions on marine structures and their responses

Song

Teng

Gou

et al. 2011

Applied Ocean Research

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“…Using equation of a catenary for the evaluation of force-excursion relationship of the mooring line, the analysis has been carried out for the mooring line with disturbed clump weight according to the procedure steps mentioned in Agarwal and Jain (2003); incorporating the two conditions stated for lifting-off of the clump weight. The behaviour of the mooring system i.e.…”

Section: Numerical Modelling 31 Quasi-static Analysis Of the Mooringmentioning

confidence: 99%

Investigation on the dynamic responses of a truss spar platform for different mooring line groups

Ahmed

Yenduri

Kurian

2015

J. Marine. Sci. Appl.

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The dynamic responses of any floating platform are dependent on the mass, stiffness and damping characteristics of the body as well as mooring system. Therefore, it is very essential to study the effect of individual contributions to the system that can finally help to economise their cost. This paper focuses on the effect of mooring stiffness on the responses of a truss spar platform, obtained by different grouping of lines. The study is part of our present researches on mooring systems which include the effect of line pretension, diameter and azimuth angles. The platform is modelled as a rigid body with three degrees-of-freedom and its motions are analyzed in time-domain using the implicit Newmark Beta technique. The mooring lines restoring force-excursion relationship is evaluated using a quasi-static approach. It is observed that the mooring system with lines arranged in less number of groups exhibits better performance in terms of the restoring forces as well as mean position of platform. However, the dynamic motions of platform remain unaffected for different line groups.

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“…One common characteristic of the marine facilities, no matter the floating wind turbine [1] or oil and gas production facilities [2] is the huge outline dimensions. A real experiment about the marine faculties is very expensive and difficult to carry out.…”

Section: Introductionmentioning

confidence: 99%

Verification of a Numerical Simulation Code for Underwater Chain Mooring

Zhu

Yoo

2016

Archive of Mechanical Engineering

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Numerical simulation is an economical and effective method in the field of marine engineering. The dynamics of mooring cables has been analysed by a numerical simulation code that was created on a basis of a new element frame. This paper aims at verifying the accuracy of the numerical simulation code through comparisons with both the real experiments and a commercial simulation code. The real experiments are carried out with a catenary chain mooring in a water tank. The experimental results match the simulation results by the numerical simulation code well. Additionally, a virtual simulation of a large size chain mooring in ocean is carried out by both the numerical simulation code and a commercial simulation code. The simulation results by the numerical simulation code match those by the commercial simulation code well. Thus, the accuracy of the numerical simulation code for underwater chain mooring is verified by both the real experiments and commercial simulation code.

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Dynamic behavior of offshore spar platforms under regular sea waves

Cited by 66 publications

References 7 publications

Comparisons of internal solitary wave and surface wave actions on marine structures and their responses

Comparisons of internal solitary wave and surface wave actions on marine structures and their responses

Investigation on the dynamic responses of a truss spar platform for different mooring line groups

Verification of a Numerical Simulation Code for Underwater Chain Mooring

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