## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 2American Society of Mechanical Engineers, 2001 - Arctic regions |

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Page 384

system , control of the wave - frequency motions of the

system , control of the wave - frequency motions of the

**vessel**is unrealistic . Instead , it is aimed at controlling the slowly varying low - frequency ( LF ) motions from wind , wave forces and current variations .Page 386

Having established these coefficients , the optimal increment of the

Having established these coefficients , the optimal increment of the

**vessel**position and the optimal direction of this increment can be found by differentiating the loss function with respect to these quantities .Page 389

Dynamic response of riser top angle to low - frequency

Dynamic response of riser top angle to low - frequency

**vessel**motion . Response angle in degrees ( left ) and dynamic amplification factor ( max dynamic / static ) to the right , Chen ( 2001 ) Angle DAF for Lower angle Figure 5.### What people are saying - Write a review

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acceptable analysis applied approach assessment associated assumed calculated coefficient combined components considered corresponding corrosion cost crack criteria damage dependent depth determined developed directional distribution dynamic effect element Engineering environmental equation estimate evaluated example expected expressed extreme factor failure fatigue Figure force frequency function fuzzy given important increase initial inspection limit load loss maintenance marine maximum mean measures Mechanics method motion normal observed obtained offshore operations parameters peak performed period pipe pipeline platform possible prediction present probability procedure production random range relative reliability represented response return period riser risk safety ship shown shows significant simulation spectral spectrum statistical storm strength stress structure surface Table theory typical uncertainty variables wave height wind