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 63
... span length and fatigue life . Vibration amplitudes , for different boundary conditions of the pipeline span , are computed from laboratory data with a new procedure based on scaling considerations which assume that the vortex- induced ...
... span length and fatigue life . Vibration amplitudes , for different boundary conditions of the pipeline span , are computed from laboratory data with a new procedure based on scaling considerations which assume that the vortex- induced ...
Page 66
... span results in good comparison between maximum predicted response and actual model test data , there are some limitations on applicability . Specifically , the following limitations are identified : ( 1 ) In general VIV cease for € / D ...
... span results in good comparison between maximum predicted response and actual model test data , there are some limitations on applicability . Specifically , the following limitations are identified : ( 1 ) In general VIV cease for € / D ...
Page 71
... Span Fatigue Damage Parameter ( eta ) 26 24 22 20 18 16 14 12 Span 1 CC Span SS Span 2 CC AA Span 2 SS 10 8 6 4 2 24 22 26 2 2 2 0 0 20 18 16 14 12 20 10 00 8 6 4 2 O 20 Span Length ( m ) Figure 5 : Effects of Span ... Span 2 CC Span 1 71.
... Span Fatigue Damage Parameter ( eta ) 26 24 22 20 18 16 14 12 Span 1 CC Span SS Span 2 CC AA Span 2 SS 10 8 6 4 2 24 22 26 2 2 2 0 0 20 18 16 14 12 20 10 00 8 6 4 2 O 20 Span Length ( m ) Figure 5 : Effects of Span ... Span 2 CC Span 1 71.
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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 mean 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 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