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 461
... range of four masses is being used for each of four separate spring stiffness settings in order to produce a variation in structure natural frequencies in 1m of water spanning between 0.4 to 1.4 Hz approximately . A major objective of ...
... range of four masses is being used for each of four separate spring stiffness settings in order to produce a variation in structure natural frequencies in 1m of water spanning between 0.4 to 1.4 Hz approximately . A major objective of ...
Page 632
... ranges from 1.5 to 2.36 m . Including all the institutions , HF values in the range from 1.15 m to 2.66 m was obtained . The lowest value was presented by an institution using very few panels in vertical direction on the columns , and ...
... ranges from 1.5 to 2.36 m . Including all the institutions , HF values in the range from 1.15 m to 2.66 m was obtained . The lowest value was presented by an institution using very few panels in vertical direction on the columns , and ...
Page 633
... range of values in surge was between 2.23 m and 8.49 m where the lowest value was obtained by strip theory . Some of the explanation of the remaining scatter may be found in the computed drift forces , as illustrated in Figure 14. Here ...
... range of values in surge was between 2.23 m and 8.49 m where the lowest value was obtained by strip theory . Some of the explanation of the remaining scatter may be found in the computed drift forces , as illustrated in Figure 14. Here ...
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