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 492
... riser . The torque will depend on both bending- and torsional stiff- ness as well as on the riser shape . In the case of a swivel support , the torque and the rotation will be limited by the swivel friction . The relative rotation , r1 ...
... riser . The torque will depend on both bending- and torsional stiff- ness as well as on the riser shape . In the case of a swivel support , the torque and the rotation will be limited by the swivel friction . The relative rotation , r1 ...
Page 497
... RISER MOTIONS Geir Moe Norwegian Institute of Technology Trondheim , Norway ABSTRACT A detailed experimental ... riser modal mass , given by ( 21 ) . structural mass per unit length of riser Re Reynolds number Ay amplitude in the ...
... RISER MOTIONS Geir Moe Norwegian Institute of Technology Trondheim , Norway ABSTRACT A detailed experimental ... riser modal mass , given by ( 21 ) . structural mass per unit length of riser Re Reynolds number Ay amplitude in the ...
Page 501
... riser stiffness . For an almost vertical marine riser the differential operator becomes Ly - Elay / dz1 - Tə2yəz2 + wdw / dz ( 16 ) hydrodynamic forces , W , follows by integration over the total wet length of the riser , h , viz . 1 W1 ...
... riser stiffness . For an almost vertical marine riser the differential operator becomes Ly - Elay / dz1 - Tə2yəz2 + wdw / dz ( 16 ) hydrodynamic forces , W , follows by integration over the total wet length of the riser , h , viz . 1 W1 ...
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