Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 9, Part 2American Society of Mechanical Engineers, 1990 - Arctic regions |
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Page 3
... integration yields unconservative results . As a general conclusion we have that the order of integration should be correct unless one is satisfied with the upper bound for the failure probability which is obtained by the ' inside ...
... integration yields unconservative results . As a general conclusion we have that the order of integration should be correct unless one is satisfied with the upper bound for the failure probability which is obtained by the ' inside ...
Page 4
... integration over time t E [ N * ( F ; 0 , t , q , r ) ] = √ √ ( F ; 7,9,1 ) dr 0 ( 18 ) with ( FT.q.r ) a time - dependent function . The stream of outcrossings now is non - stationary which prohibits the use of the ergodic theorem ...
... integration over time t E [ N * ( F ; 0 , t , q , r ) ] = √ √ ( F ; 7,9,1 ) dr 0 ( 18 ) with ( FT.q.r ) a time - dependent function . The stream of outcrossings now is non - stationary which prohibits the use of the ergodic theorem ...
Page 5
... Integration in n time intervals B = N ( 0.05 , 0.05 ) where To is the zero crossing period and His the significant wave hight . The sea state parameter His is modeled by a Weibull distribution . For the purpose of this illustration To ...
... Integration in n time intervals B = N ( 0.05 , 0.05 ) where To is the zero crossing period and His the significant wave hight . The sea state parameter His is modeled by a Weibull distribution . For the purpose of this illustration To ...
Contents
Investigation of the Ergodicity Assumption for Sea States in the Reliability Assessment of Offshore | 1 |
OFFSHORE TECHNOLOGY PART A | 33 |
Extreme Forces on Large AxiSymmetric Offshore Structures in Directional Seas | 49 |
Copyright | |
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amplitude applied assessment assumed axial basic variables behaviour calculated coefficient component computed considered corrosion cost crack depth crack growth rate CTOD curve defect deterministic drag force effects Engineering environmental equation estimated evaluated extreme failure mode failure probability fatigue crack growth fatigue damage fatigue failure fatigue strength Figure fracture mechanics fracture toughness frequency Gaussian geometry hindcast initial inspection instability load integration limit state function linear Lognormal LRFD material maxima maximum mean value method nonlinear normal normal distribution North Sea obtained offshore structures parameters platform predicted pressure probabilistic probability density function probability distribution quadratic random variable ratio reliability analysis reliability index residual stresses response risk S-N curve safety sea-state significant wave height simulation spectral standard deviation statistical stochastic storm stress intensity factor stress range Table tension tether tubular joints vector Weibull distribution weld weldments