## Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 9, Part 5American Society of Mechanical Engineers, 1990 - Arctic regions |

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Page 64

L where fn is the natural frequency of the span in the " ith " mode , the equation of motion ( 1 )

L where fn is the natural frequency of the span in the " ith " mode , the equation of motion ( 1 )

**reduces**to the ... 8 EI Development of Equation Sr ( ) is the**reduced**stiffness , ( 5a ) fn2D 8PwD5 8 is the acceleration of gravity ...Page 66

One approach for scaling combined ( steady + oscillatory ) flow conditions is to calculate the

One approach for scaling combined ( steady + oscillatory ) flow conditions is to calculate the

**reduced**velocity Ur based on the instantaneous flow velocity and use model test results where KC - 0. This approach is likely to be ...Page 141

This

This

**reduction**of the forces is relatively much smaller than the**reduction**of the observed movements . Two effects may be present . The**reduction**in the forces lead to the elimination of a relatively high number of cases of pipe ...### What people are saying - Write a review

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addition analysis applied approach assessment assumed bending calculations caused considered CONTINUE corrosion crack damage deformation depth described diameter direction displacement distribution effect energy Engineering ensemble equations factors failure field Figure flow force fracture function given hole included increase initial installation internal layer length limit load material maximum measured mechanical method mode movement obtained occurred Offshore operation parameters pipe pipeline plastic plate platform position predicted presented pressure probability problem procedure properties radial range ratio reduced relative reliability resistance response safety scaling scour seabed shown shows simulated soil solution span stability steel strain strength stress structure subsea surface Table term thickness toughness tracers tube uncertainty values valve variables wall wave weight weld