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 9
... given by ; T = 1.2 T c ( 7 ) where T is the mean zero - up - crossing wave period . The instantaneous wind will of course show some fluctation around the mean wind . Herein the actual design wind is assumed to be given by : Wa = W ( 1 + ...
... given by ; T = 1.2 T c ( 7 ) where T is the mean zero - up - crossing wave period . The instantaneous wind will of course show some fluctation around the mean wind . Herein the actual design wind is assumed to be given by : Wa = W ( 1 + ...
Page 51
... given as : It should be mentioned here that assumption underlying Eq . ( 3 ) implies that df is to be evaluated only for z dz level Z greater than the expected value E ( z ) of Ꮓ . E ( z ) may , itself , be evaluated by using Eq . ( 2 ) ...
... given as : It should be mentioned here that assumption underlying Eq . ( 3 ) implies that df is to be evaluated only for z dz level Z greater than the expected value E ( z ) of Ꮓ . E ( z ) may , itself , be evaluated by using Eq . ( 2 ) ...
Page 209
... given in Table 3. The mean S - N curve and related mean + 2slog AS scatter band from this simulation are compared with the fatigue test data in Figs . 3 - 5 . Stress Range , AS ( MPa ) 1000 100 10 1E + 04 Fig . 3 44 Nihei et al . JIS ...
... given in Table 3. The mean S - N curve and related mean + 2slog AS scatter band from this simulation are compared with the fatigue test data in Figs . 3 - 5 . Stress Range , AS ( MPa ) 1000 100 10 1E + 04 Fig . 3 44 Nihei et al . JIS ...
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