Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 5American Society of Mechanical Engineers, 1992 - Arctic regions |
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Page 169
... vibration . The vibration is the result of cyclic lift forces associated with the vortex shedding phenomenon . Although the amplitudes of vibration are typically quite small , the accumulation of vibration cycles can induce fatigue ...
... vibration . The vibration is the result of cyclic lift forces associated with the vortex shedding phenomenon . Although the amplitudes of vibration are typically quite small , the accumulation of vibration cycles can induce fatigue ...
Page 177
... vibration frequencies of the system and to estimate the effective damping ratio based on the free - vibration decay . Samples of typical free- vibration response of the undamped and damped sections are illustrated in Figure 12. This ...
... vibration frequencies of the system and to estimate the effective damping ratio based on the free - vibration decay . Samples of typical free- vibration response of the undamped and damped sections are illustrated in Figure 12. This ...
Page 180
... vibration under turbulent wind conditions . ( 2 ) Under laminar wind conditions , stresses due to pipeline vibration will exceed the 3.4 ksi ceiling in certain modes of vibration . However , these stresses should remain below 6.8 ksi ...
... vibration under turbulent wind conditions . ( 2 ) Under laminar wind conditions , stresses due to pipeline vibration will exceed the 3.4 ksi ceiling in certain modes of vibration . However , these stresses should remain below 6.8 ksi ...
Contents
OFFSHORE PIPELINE TECHNOLOGY | 53 |
CODESSTANDARDS AND REGULATIONS | 75 |
OFFSHORE MECHANICS AND ARCTIC ENGINEERING | 89 |
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Alberta analysis applied Arctic assessment axial bending buckling buried pipelines calculated Canadian Standards Association coefficient construction corrosion crack criteria cylinder damage defects depth developed diameter displacement distribution effect elastic Engineering environmental equation equipment estimated evaluation failure probability fatigue finite element flow force fractile fracture fracture mechanics frequency frost heave frozen soil gas pipeline geometry hoop stress horizontal inspection installation interaction internal lift force Limit States Design load lognormal longitudinal maximum measured Mechanics meter methods offshore pipelines OMAE operation orifice orifice plate parameters permafrost pipe wall pipeline spans pipeline system Pipeline Technology ASME plastic predicted pressure ratio reliability S-N curve scour simulation SMYS solution specific standards steel strain structural Table Technology ASME 1992 temperature differential tensile tube bundle usage factor variable velocity profile vertical vibration volumetric flow rate vortex shedding wall thickness weld yield strength