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 146
... Depth = 300 m Depth = 450 m Depth = To 0.09 0.09 0.09 T 0.58 0.68 0.69 T2 0.01 0.01 0.01 T3 0.14 0.14 0.16 ΤΑ 0.15 0.07 Ts 0.04 0.02 0.04 0.01 600 m Table 2 : a - values for the minimum tension limit state We note that the dominating ...
... Depth = 300 m Depth = 450 m Depth = To 0.09 0.09 0.09 T 0.58 0.68 0.69 T2 0.01 0.01 0.01 T3 0.14 0.14 0.16 ΤΑ 0.15 0.07 Ts 0.04 0.02 0.04 0.01 600 m Table 2 : a - values for the minimum tension limit state We note that the dominating ...
Page 271
... depth in both cases due to the increased crack driving force . LEVEL 2 , CDLBZ gave considerably higher reliability for lower crack depths . A 3 mm deep crack has a reliabi- lity index of 1.14 without constraint correction and 2.93 with ...
... depth in both cases due to the increased crack driving force . LEVEL 2 , CDLBZ gave considerably higher reliability for lower crack depths . A 3 mm deep crack has a reliabi- lity index of 1.14 without constraint correction and 2.93 with ...
Page 274
... DEPTH t , mm 12 0.99 Fig . 5 Empirical and fitted Weibull cumulative probability plots of LBZ CTOD fracture toughness for 2 , 5 and 10 mm crack depths . Fig . 6 Second order reliability indices for X - butt weld subjected to uniform ...
... DEPTH t , mm 12 0.99 Fig . 5 Empirical and fitted Weibull cumulative probability plots of LBZ CTOD fracture toughness for 2 , 5 and 10 mm crack depths . Fig . 6 Second order reliability indices for X - butt weld subjected to uniform ...
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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Common terms and phrases
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