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 164
... average value of the secondary wave pressure over a long time is non - zero and it is larger for more severe sea ... average pressure differences are calculated for durations of 3 and 6 days ( 6 and 12 M2 tidal cycles ) This pressure ...
... average value of the secondary wave pressure over a long time is non - zero and it is larger for more severe sea ... average pressure differences are calculated for durations of 3 and 6 days ( 6 and 12 M2 tidal cycles ) This pressure ...
Page 165
... average pressure difference was computed from these values . A zero spectral moment for the sea bed pressure ... average them over for instance each half hour period . The time tag allocated to such an average is the midpoint of the time ...
... average pressure difference was computed from these values . A zero spectral moment for the sea bed pressure ... average them over for instance each half hour period . The time tag allocated to such an average is the midpoint of the time ...
Page 166
... average three and six day pressure averages were computed from 30 independent simulations . The average error of the difference pressure between two platform records computed from these is listed in table 3 and shown in figure 9. It was ...
... average three and six day pressure averages were computed from 30 independent simulations . The average error of the difference pressure between two platform records computed from these is listed in table 3 and shown in figure 9. It was ...
Contents
Investigation of the Ergodicity Assumption for Sea States in the Reliability Assessment of Offshore | 1 |
OFFSHORE TECHNOLOGY PART | 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 reliability 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 variation vector weld weldments