Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts 1-2American Society of Mechanical Engineers, 2004 - Arctic regions |
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Page 942
( 2 ) The nonlinear contributions to the low frequency , wave induced bending is
small for all the heading angles . ( 3 ) The overall increase to the total bending
moment ( RMS ) from the nonlinear , sum - frequency excitation is under 12 % for
all ...
( 2 ) The nonlinear contributions to the low frequency , wave induced bending is
small for all the heading angles . ( 3 ) The overall increase to the total bending
moment ( RMS ) from the nonlinear , sum - frequency excitation is under 12 % for
all ...
Page 1099
Nonlinear model The nonlinear equation of motion can be written as ż = Az + f ( z
) + Bu + Ht wave ( 25 ) y = Cz where f ( z ) ... ( 27a ) for closed loop : u = Gz + h ( z
) ( 276 ) The additional term h ( z ) in the control law is to cancel the nonlinearity .
Nonlinear model The nonlinear equation of motion can be written as ż = Az + f ( z
) + Bu + Ht wave ( 25 ) y = Cz where f ( z ) ... ( 27a ) for closed loop : u = Gz + h ( z
) ( 276 ) The additional term h ( z ) in the control law is to cancel the nonlinearity .
Page 1100
In addition , nonlinear control law gives better performance since there is an
additional term to cancel the nonlinearity . ... It can be seen that higher control
forces are required based on the nonlinear model to compensate the mooring
forces .
In addition , nonlinear control law gives better performance since there is an
additional term to cancel the nonlinearity . ... It can be seen that higher control
forces are required based on the nonlinear model to compensate the mooring
forces .
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Contents
PART | 595 |
000000000000000000000000000000000000000000 | 605 |
OFFSHORE TECHNOLOGY | 608 |
Copyright | |
29 other sections not shown
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Common terms and phrases
added amplitude analysis angle applied approach ASME assumed barge bending boundary buoy calculated capacity coefficient combined components computed connection considered Copyright corresponding damage damping deck depth determined developed diameter direction displacement dynamic effect element Engineering equation estimated event factor fatigue field Figure force FPSO frequency function given height horizontal hull iceberg impact increase installation jacket joint length limit linear load marine mass maximum mean measured method model tests mooring mooring lines mooring system motion natural numerical obtained Offshore operation parameters performed period pile pitch platform position possible potential predicted presented pressure problem range relative response riser shear ship shown shows simulations skirt solution spar speed strength stress structure surface Table tank tension trench values velocity vertical vessel wall wave wind
Bibliographic information
| Title | Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 1, Parts 1-2 |
| Contributors | OMAE Conference Committee, American Society of Mechanical Engineers, American Society of Mechanical Engineers. Offshore Mechanics and Arctic Engineering Division |
| Publisher | American Society of Mechanical Engineers, 2004 |
| Original from | the University of Michigan |
| Digitized | 4 Dec 2007 |
| ISBN | 0791837432, 9780791837436 |
| Export Citation | BiBTeX EndNote RefMan |