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 39
... tube . The pressure at which the tube at the bottom of the picture was bent was high enough to initiate a propagating buckle which collapsed one side of the test specimen . ( The propagation pressure of this tube was P / P = 0.323 ...
... tube . The pressure at which the tube at the bottom of the picture was bent was high enough to initiate a propagating buckle which collapsed one side of the test specimen . ( The propagation pressure of this tube was P / P = 0.323 ...
Page 40
... tube under external pressure ( P ) . The tube has mean radius Ro and wall thickness t . The Ro / t values of interest are low enough so that buckling occurs in the plastic range . Because the tube is long , we assume that buckling ...
... tube under external pressure ( P ) . The tube has mean radius Ro and wall thickness t . The Ro / t values of interest are low enough so that buckling occurs in the plastic range . Because the tube is long , we assume that buckling ...
Page 99
... tubes and helically wound reinforcing cables are modelled individually . The improvement in the results obtained with the incorporation of the new thick tube layer is demonstrated for a flexible pipe with D / t = 5 . Extensive finite ...
... tubes and helically wound reinforcing cables are modelled individually . The improvement in the results obtained with the incorporation of the new thick tube layer is demonstrated for a flexible pipe with D / t = 5 . Extensive finite ...
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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