Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 10, Part 2American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 4
... expressed using ( 16 ) : E ( Amar ) = √2mo√TN -- N ( N - 1 ) 2 ! √2 + N ( N - 1 ) ( N2 ) 3 ! √3 ( 15 ) ( 16 ) ( 17 ) For large N values , the calculation of E ( Amar ) is easier with the following asymptotic expression [ 9 ] : E ...
... expressed using ( 16 ) : E ( Amar ) = √2mo√TN -- N ( N - 1 ) 2 ! √2 + N ( N - 1 ) ( N2 ) 3 ! √3 ( 15 ) ( 16 ) ( 17 ) For large N values , the calculation of E ( Amar ) is easier with the following asymptotic expression [ 9 ] : E ...
Page 53
... expressed by the transfer function HQ ( w ) . The rela- tion between wave amplitude and moment amplitude is similarly expressed by the transfer function HM ( w ) . The moment is applied at the seabed . The spectral densities for the ...
... expressed by the transfer function HQ ( w ) . The rela- tion between wave amplitude and moment amplitude is similarly expressed by the transfer function HM ( w ) . The moment is applied at the seabed . The spectral densities for the ...
Page 54
... expressed as a fraction X ; of Hmo , L as shown by Eq . ( 11 ) . A lognormal distribution is therefore assumed for 1 - X ;. Accordingly , X ; can be expressed as follows i X ; = 1 - exp ( r ; + U 28¡ ) ( 25 ) where U2 is a standard ...
... expressed as a fraction X ; of Hmo , L as shown by Eq . ( 11 ) . A lognormal distribution is therefore assumed for 1 - X ;. Accordingly , X ; can be expressed as follows i X ; = 1 - exp ( r ; + U 28¡ ) ( 25 ) where U2 is a standard ...
Contents
Occurrence of Extreme Waves With Respect to Significant Wave Height | 1 |
Spectral Modelling of Sea States With Multiple Wave Systems | 13 |
Statistical and Physical Models of Nonlinear Random Waves | 23 |
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amplitude applied approximation assumed bending bending moment calculated coefficient component computed condition considered correlation corresponding crack growth crack length crest damage damping defects defined density function design point deterministic distribution effect element Engineering equation estimated evaluation example failure probability Figueira da Foz Figure fracture mechanics frequency fuzzy Gaussian given hindcast inspection integral joints linear load lognormal maintenance matrix maximum mean value method mooring nonlinear normal normal distribution obtained offshore structures parameters partial safety factors plate platform probabilistic probability density probability density function probability of failure procedure random variables ratio redundancy reliability analysis reliability index repair residual stresses response sample seastates shear ship shown significant wave height simulation spectra spectrum standard deviation statistical stochastic Stokes storm strength stress range structural reliability surface system reliability Table tendon tion transfer function uncertainty variation vector Weibull Weibull distribution welded yield stress