Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 11, Part 5American Society of Mechanical Engineers, 1992 - Arctic regions |
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Page 171
... displacement history and its Fourier Amplitude Spectrum ( FAS ) are shown in Figure 2. It is clear from these plots that the displacement response is dominated by vibration at a frequency of 2.25 Hz , which corresponds to vibration mode ...
... displacement history and its Fourier Amplitude Spectrum ( FAS ) are shown in Figure 2. It is clear from these plots that the displacement response is dominated by vibration at a frequency of 2.25 Hz , which corresponds to vibration mode ...
Page 177
... Displacement ( inches ) የ የ 0.3 Typical Free - Vibration Response in Bare Pipeline I 10 20 30 40 50 60 70 80 90 ... displacement trigger or a wind trigger . A displacement trigger occurs when the root - mean - square ( RMS ) of the ...
... Displacement ( inches ) የ የ 0.3 Typical Free - Vibration Response in Bare Pipeline I 10 20 30 40 50 60 70 80 90 ... displacement trigger or a wind trigger . A displacement trigger occurs when the root - mean - square ( RMS ) of the ...
Page 222
... DISPLACEMENT ( mm ) Fig 6 ( a ) Corrosion depth 30 % wt 5 10 15 RADIAL DISPLACEMENT ( mm ) Fig 6 ( b ) Corrosion depth 50 % wt 100 www . 50 PRESSURE ( bar ) PRESSURE ( bar ) 100 PRESSURE ( bar ) 150- 100 50 100 C 200 0 0 0 0 10 15 + ve ...
... DISPLACEMENT ( mm ) Fig 6 ( a ) Corrosion depth 30 % wt 5 10 15 RADIAL DISPLACEMENT ( mm ) Fig 6 ( b ) Corrosion depth 50 % wt 100 www . 50 PRESSURE ( bar ) PRESSURE ( bar ) 100 PRESSURE ( bar ) 150- 100 50 100 C 200 0 0 0 0 10 15 + ve ...
Contents
OFFSHORE PIPELINE TECHNOLOGY | 53 |
CODESSTANDARDS AND REGULATIONS | 75 |
OFFSHORE MECHANICS AND ARCTIC ENGINEERING | 89 |
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Alberta amplitude analysis applied assessment axial bending buckling burst pressure calibrated Canadian Standards Association coefficient collapse construction corroded region corrosion corrosion pit crack criterion cylinder damper defects depth displacement distribution effect elastic Engineering environmental equation estimated evaluation failure modes failure probability fatigue damage Figure finite element flow force fractile fracture limit fracture mechanics fracture toughness frequency frost heave gas pipeline geometry hoop stress installation lift force limit state function Limit States Design load lognormal longitudinal maximum measured methods offshore pipelines OMAE operation orifice plate parameters pipe wall pipeline design pipeline spans pipeline system plastic predicted ratio reliability S-N curve safety level sample simulation SMYS soil specific standards steel stepblade strain strake stress concentration structural Submarine Pipeline Table temperature differential tensile topsoil tube bundle uncertainty usage factor variable vibration vortex shedding wall thickness weld yield strength yield stress