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 139
... pipe tests . Scaling of model pipes The tests were scaled according to Froudes model law . However , the structural properti- es of the pipe cannot be scaled accordingly . The relevant prototype pipes range from 8 " to 30 " diameter steel ...
... pipe tests . Scaling of model pipes The tests were scaled according to Froudes model law . However , the structural properti- es of the pipe cannot be scaled accordingly . The relevant prototype pipes range from 8 " to 30 " diameter steel ...
Page 148
... pipe displacement at the end of a storm is the sum of displacements induced by the separate seastates . water A typical calculated pipe displacement time series at simulated the mid - point of a long pipeline under short - crested seas ...
... pipe displacement at the end of a storm is the sum of displacements induced by the separate seastates . water A typical calculated pipe displacement time series at simulated the mid - point of a long pipeline under short - crested seas ...
Page 149
... pipe , it is recommend- ed that the pipe strain be limited to .002 . When a nonlinear model of moment curvature is employed for the pipe , then the allowable pipe strain can be in- creased depending upon the pipe diameter / wall thick ...
... pipe , it is recommend- ed that the pipe strain be limited to .002 . When a nonlinear model of moment curvature is employed for the pipe , then the allowable pipe strain can be in- creased depending upon the pipe diameter / wall thick ...
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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