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 1
... standard deviation of random variable R OR T :( . ) 61 = transformation of probability distributions = standard deviation of zero mean normal process = random time to failure Το = significant wave period = reference time U X α BG ( t ) ...
... standard deviation of random variable R OR T :( . ) 61 = transformation of probability distributions = standard deviation of zero mean normal process = random time to failure Το = significant wave period = reference time U X α BG ( t ) ...
Page 52
... standard deviation decreases , as expected for the extreme type I distribution . The p.d.f. of extreme of maxima 2 has been normalized with respect to the standard deviation Jm of in - line component in short - crested seas . m m ...
... standard deviation decreases , as expected for the extreme type I distribution . The p.d.f. of extreme of maxima 2 has been normalized with respect to the standard deviation Jm of in - line component in short - crested seas . m m ...
Page 68
... standard deviation is 30 MPa ( this presupposes good quality control and a detailed material specification ) . The yield strength σ , is modelled as a lognormal variable with mean = 482 + ( 2 × 30 ) — 15 = 527 MPa and standard deviation ...
... standard deviation is 30 MPa ( this presupposes good quality control and a detailed material specification ) . The yield strength σ , is modelled as a lognormal variable with mean = 482 + ( 2 × 30 ) — 15 = 527 MPa and standard deviation ...
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