A Review of the Probabilistic Description of Morison Wave Loading and Response of Fixed Offshore Structures

Morison coefficients for a circular cylinder oscillating with dual frequency in still water: an analysis using independent-flow form of Morison’s equation

“…When studying the responses of offshore structures to ocean waves, the wave forces acting on slender members are frequently modeled by Morison's equation, which has been widely used to model wave loadings on cylinders fixed in waves or cylinders oscillating in still water or waves (e.g., Sarpkaya and Storm 1985;Najafian et al 1995;Liu and Bergdahl 1996;DNV 2010). Even though the original Morison's equation was proposed for regular waves, it has been widely used for random waves in practice (Najafian et al 1995;Burrows et al 1997).…”

“…Even though the original Morison's equation was proposed for regular waves, it has been widely used for random waves in practice (Najafian et al 1995;Burrows et al 1997). When performing frequencydomain analysis using Morison's equation, the quadratic drag force needs to be linearized (e.g., Gudmestad and Connor 1983).…”

Comparison of three different methods of moments for derivation of probability distribution parameters

“…These moments can either be determined theoretically [4,9,[20][21][22][23][24][25][26][27][28][29][30][31][32] or estimated from simulated [33,34] or measured data. Accurate derivation of response moments from theoretical techniques leads to accurate evaluation of the distribution parameters.…”

“…by intermittent loading on members in the splash zone [6,7], which have a significant effect on the probabilistic properties of response. Despite these obstacles, it is of crucial importance to calculate the probability distribution of response as this information is the minimum requirement for efficient probabilistic analysis of offshore structures [8,9]. Previous work has shown that the Pierson-Holmes (P-H) distribution [10] is a reasonably good model for the global response of structures exposed to Morison wave loading when the effect of load intermittency on the response distribution is not severe [3,[11][12][13][14][15][16][17][18].…”

Discussion on the design value of environmental condition in offshore structure design

“…Thus it is significant to select an adequate design value dealing with an offshore structure design. Several methods have been developed, such as the use of joint probability distributions [1][2] , the "New-Wave" approach [3] , the optimization method in which the failure probability as the restraint condition and the minimum cost as the objective function [4] , and others mentioned in Ref. [5].…”