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 | 19 |
Fatigue Loading | 33 |
Copyright | |
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analysis applied approach approximately assessment assumed average basic calculated coefficient component computed considered constant corresponding cost crack growth curve cycles damage defect density depends depth derived described determined developed deviation distribution drag effects Engineering equation equivalent estimated evaluated example expected extreme factor failure failure probability fatigue Figure force fracture frequency function geometry given important included increase indicated initial inspection integration joints limit linear load Lognormal material maximum mean measured mechanics method normal obtained offshore structures operation parameters performed period platform predicted present pressure probabilistic probability procedure random variable range ratio reference relative reliability represent requirements respectively response risk safety shown shows significant simulation standard statistical storm strength stress structure surface Table tension tether tubular uncertainty variables variation wave wave height weld