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 61
... Tension The design criterion for no slack reads T2 + T3 - T4 - T5 + T6 - T8 - T9 > 0 ( 41 ) ( 42 ) where the notation is the same as for maximum tension . The limit state function for minimum tension in tethers can than be written as g ...
... Tension The design criterion for no slack reads T2 + T3 - T4 - T5 + T6 - T8 - T9 > 0 ( 41 ) ( 42 ) where the notation is the same as for maximum tension . The limit state function for minimum tension in tethers can than be written as g ...
Page 145
... tension . b : The tether tension shall not exceed the yield strength . According to present norwegian standards [ 10 ] the ULS checks are carried out using a partial load and resistance factor for- mat . Two different load combinations ...
... tension . b : The tether tension shall not exceed the yield strength . According to present norwegian standards [ 10 ] the ULS checks are carried out using a partial load and resistance factor for- mat . Two different load combinations ...
Page 146
... tension 13 Maximum tension 12 300m 450m 11 100m 450m 10 600m 9 8 7 6 5 ་ ་ 4 3 2 1 600m 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Figure 3 : Reliability index as a function of mean tether preten- sion force . The sensitivity factors for the tension ...
... tension 13 Maximum tension 12 300m 450m 11 100m 450m 10 600m 9 8 7 6 5 ་ ་ 4 3 2 1 600m 0.1 0.2 0.3 0.4 0.5 0.6 0.7 Figure 3 : Reliability index as a function of mean tether preten- sion force . The sensitivity factors for the tension ...
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