Proceedings of the ... International Conference on Offshore Mechanics and Arctic Engineering, Volume 10American Society of Mechanical Engineers, 1991 - Arctic regions |
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Page 490
... curvature . This is implemented in a computer program , see [ 2 ] , as an option for speci- fying different unloading / reloading curves , socalled hysteresis loops , in the bending moment / curvature relation for the cross - section ...
... curvature . This is implemented in a computer program , see [ 2 ] , as an option for speci- fying different unloading / reloading curves , socalled hysteresis loops , in the bending moment / curvature relation for the cross - section ...
Page 491
... curvature change is in the same direction as the last change . If the curvature change is in the opposite direction , the friction moment will change sign . In order to describe the out - of - plane deformation and also rotation of a ...
... curvature change is in the same direction as the last change . If the curvature change is in the opposite direction , the friction moment will change sign . In order to describe the out - of - plane deformation and also rotation of a ...
Page 494
1a b curvature curvature 1b reloading curve B Curve A applied from a Curve B applied from b unloading curve A 1c MOMENT / CURVATURE RELATION MOMENT 51 1.5 Static position 1.0 0.5 0.0 0.5 -1.0 0 Figure 1 : Modelling of internal friction ...
1a b curvature curvature 1b reloading curve B Curve A applied from a Curve B applied from b unloading curve A 1c MOMENT / CURVATURE RELATION MOMENT 51 1.5 Static position 1.0 0.5 0.0 0.5 -1.0 0 Figure 1 : Modelling of internal friction ...
Contents
CASE HISTORIES OFFSHORE STRUCTURES | 331 |
OFFSHORE TECHNOLOGY PART | 337 |
OFFSHORE STRUCTURE CONCEPTS | 361 |
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acceleration accelerometers added mass amplitude axial beam behaviour bending stiffness cable calculated Campos Basin catenary coefficient compliant tower components curvature curves cylinder damping ratio deck deformation developed diameter displacement drag drag coefficient dynamic analysis dynamic response effect Ekofisk elastic Engineering equation finite element finite element method flexible pipe fluid force free-fall lifeboat frequency domain hydrodynamic hydrodynamic damping impact in-span installation jack jacket joint launch length lift force linear load Mathieu Mathieu equation measured Mechanics meters method mode mode shape motion natural frequency nodal nodes nonlinear obtained Offshore Structures OMAE operation oscillation parameters phase pile platform pressure rotation seabed semi-rigid shear shown in Figure skin friction soil solution SPUS static analysis stiffness matrix submarine subsea support point tension tether torque transverse values vector velocity vertical vessel vibration Volume I-B water depth