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
... mode 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 ...
... mode 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
... mode in the lower part of the structure , but oppose the sway - type mode loads in the upper portion of the jacket . The opposite pattern is discernable at the time of maximum overturning moment . The two dominating modes , the bow ...
... mode in the lower part of the structure , but oppose the sway - type mode loads in the upper portion of the jacket . The opposite pattern is discernable at the time of maximum overturning moment . The two dominating modes , the bow ...
Page 347
... mode or higher . For long or heavily tensioned beams , the variation of dimen- sionless natural frequency parameter with dimensionless tension parameter was expressed in a simple analytical form . For such beams , in the first few modes ...
... mode or higher . For long or heavily tensioned beams , the variation of dimen- sionless natural frequency parameter with dimensionless tension parameter was expressed in a simple analytical form . For such beams , in the first few modes ...
Contents
FLOATING PRODUCTION SYSTEMS | 1 |
OFFSHORE MECHANICS | 23 |
Early Production Systems in the North | 31 |
Copyright | |
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analysis anchor applied bending calculations components Conference connected considerable considered construction cost curve damage depth determined direction displacement distribution drilling dynamic effect element energy Engineering equation equipment excitation fatigue field Figure fixed flexible floating flow forces frequency function geometry included increase inspection installation International joint length limit linear load lower mass matrix maximum mean measured Mechanics method mode model tests mooring mooring system motion obtained Offshore operating parameters performance period phase pile pipe pipeline platform position presented pressure production ratio response riser RPIT shear shown shows significant soil static stiffness strength stress structure surface Table technique Technology tension tool tower turbine vessel wave weight