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 34
... obtained from experiments . AK is the stress intensity factor range at the crack tip which can be evaluated as in Eq . 1 - b , in which Q is a geometry correction factor and S represents the constant amplitude stress range at the hot ...
... obtained from experiments . AK is the stress intensity factor range at the crack tip which can be evaluated as in Eq . 1 - b , in which Q is a geometry correction factor and S represents the constant amplitude stress range at the hot ...
Page 51
... obtained from the properties of spectrum . 3 . 5 . 6 . 7 . 8 . ยท corresponding probability density function given as : It should be mentioned here that assumption underlying Eq . ( 3 ) implies that df is to be evaluated only for z dz ...
... obtained from the properties of spectrum . 3 . 5 . 6 . 7 . 8 . ยท corresponding probability density function given as : It should be mentioned here that assumption underlying Eq . ( 3 ) implies that df is to be evaluated only for z dz ...
Page 225
... obtained fairly accurately using 3 - D finite element analysis . However , these methods prove to be very expensive in fatigue crack growth predictions since stress intensity factors for various crack sizes and shapes need to be ...
... obtained fairly accurately using 3 - D finite element analysis . However , these methods prove to be very expensive in fatigue crack growth predictions since stress intensity factors for various crack sizes and shapes need to be ...
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