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 60
... Uncertainty The response uncertainty can be considered as consisting of uncertainty in the transfer function the sea spectrum . The estimation of both vertical and horizontal responses is subject to uncertainty in the transfer function ...
... Uncertainty The response uncertainty can be considered as consisting of uncertainty in the transfer function the sea spectrum . The estimation of both vertical and horizontal responses is subject to uncertainty in the transfer function ...
Page 209
... uncertainty in the fatigue strength . There was no dominant source of uncertainty for these weldments . The percentages of the square of the total uncertainty due to each factor were ranked as follows : s = 37 % , 2 = 27 % , N = 20 ...
... uncertainty in the fatigue strength . There was no dominant source of uncertainty for these weldments . The percentages of the square of the total uncertainty due to each factor were ranked as follows : s = 37 % , 2 = 27 % , N = 20 ...
Page 210
... uncertainty in fatigue strength : see Table 6. Reducing the uncertainty in the bending factor ( x ) could increase the reliability factor ( RF = 0.626 ) by as much as 10 % . Equation 12 also suggests that an effort to reduce the other ...
... uncertainty in fatigue strength : see Table 6. Reducing the uncertainty in the bending factor ( x ) could increase the reliability factor ( RF = 0.626 ) by as much as 10 % . Equation 12 also suggests that an effort to reduce the other ...
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