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 52
... described in Equation [ 15 ] accounts for failure by both plastic collapse and by unstable fracture . The limit state can , however , be set up in terms of plastic collapse alone , using the appropriate solutions for pipeline girth ...
... described in Equation [ 15 ] accounts for failure by both plastic collapse and by unstable fracture . The limit state can , however , be set up in terms of plastic collapse alone , using the appropriate solutions for pipeline girth ...
Page 122
... described in more detail later , a pipe was subjected to a number of oscillations followed by displacement to break - out . The following model was developed to correlate the total break - out soil resistance , FH , to the simultaneous ...
... described in more detail later , a pipe was subjected to a number of oscillations followed by displacement to break - out . The following model was developed to correlate the total break - out soil resistance , FH , to the simultaneous ...
Page 123
... described by Palmer et al . ( 1988 ) . The test rig used is sketched in Fig . 2 and consisted of a pipe section , of 0.295 m diameter , placed on the surface of a soil bed , or lowered into a pre - formed depression of up to 0.5 ...
... described by Palmer et al . ( 1988 ) . The test rig used is sketched in Fig . 2 and consisted of a pipe section , of 0.295 m diameter , placed on the surface of a soil bed , or lowered into a pre - formed depression of up to 0.5 ...
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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