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 4
... sea - state vector sequence Q is ergodic . As before , the structure is assumed to be initially intact and all sea - states have the same duration △ and n = t / A . Furthermore , assume an ergodic sequence of sea state parameters Qj ...
... sea - state vector sequence Q is ergodic . As before , the structure is assumed to be initially intact and all sea - states have the same duration △ and n = t / A . Furthermore , assume an ergodic sequence of sea state parameters Qj ...
Page 5
... sea - states . Remember that in each sea state with duration A and fixed value of the sea - state parameter Q = q all crossings for the wave process out of the failure domain F depend on this parameter . Hence , the integration with ...
... sea - states . Remember that in each sea state with duration A and fixed value of the sea - state parameter Q = q all crossings for the wave process out of the failure domain F depend on this parameter . Hence , the integration with ...
Page 151
... sea state condition . The standard approach is to use observations of sea state along the most critical part of the route to estimate the probability that , at a fixed point in space and at a generic time , the sea state exceeds various ...
... sea state condition . The standard approach is to use observations of sea state along the most critical part of the route to estimate the probability that , at a fixed point in space and at a generic time , the sea state exceeds various ...
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