Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 1; Volume 7, Part 1American Society of Mechanical Engineers, 1988 - Arctic regions |
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Page 291
... periods were heavily influenced by the base width . A 25 % change in base width resulted in a 30 % change in first mode period and 23 % change in second mode period . The wider the base , the lower the periods . · Leg area Only the ...
... periods were heavily influenced by the base width . A 25 % change in base width resulted in a 30 % change in first mode period and 23 % change in second mode period . The wider the base , the lower the periods . · Leg area Only the ...
Page 292
... PERIOD ( SEC ) sway - type and bow - shaped mode inertia loads are illustrated separately to explain the shape of the applied inertial loads as a function of jacket height . From Fig . 6 ( a ) it is evident that the inertia loads ...
... PERIOD ( SEC ) sway - type and bow - shaped mode inertia loads are illustrated separately to explain the shape of the applied inertial loads as a function of jacket height . From Fig . 6 ( a ) it is evident that the inertia loads ...
Page 294
... periods affected dynamic base shears ( DBS ) relatively little for periods longer than 30 seconds : 40 % changes in period influenced dynamic base shear by between 5 % to 10 % . For shorter periods ( 25 to 30 sec ) effects of period ...
... periods affected dynamic base shears ( DBS ) relatively little for periods longer than 30 seconds : 40 % changes in period influenced dynamic base shear by between 5 % to 10 % . For shorter periods ( 25 to 30 sec ) effects of period ...
Contents
FLOATING PRODUCTION SYSTEMS | 1 |
OFFSHORE MECHANICS | 23 |
Early Production Systems in the North | 31 |
Copyright | |
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analysis angle applied axial bending cable calculated characteristics coefficient components Conference connected considered construction cost curve damage depth determined diameter direction displacement distribution dynamic effect element energy Engineering equation equipment fatigue field Figure flexible flow forces frequency function geometry given important included increase installation International joint length limit linear load lower mass material matrix maximum mean measured Mechanics method mode mooring motion natural normal obtained Offshore operation parameters performance period pile pipe pipeline platform position presented pressure problem production range ratio response riser shear shown shows significant soil static stiffness strength stress structure surface Table Technology tension tower turbine vane vessel wave weight wire