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 467
... natural frequency of the structure in the wave direction was 0.74Hz and the damping ratio obtained was 5.9 % of critical damping . A similar study conducted in the air showed that the natural frequency of the model structure in air was ...
... natural frequency of the structure in the wave direction was 0.74Hz and the damping ratio obtained was 5.9 % of critical damping . A similar study conducted in the air showed that the natural frequency of the model structure in air was ...
Page 584
... natural frequency of vibration of the cantilever for each joint and the boundary conditions also measured , a model for the joint where the semi - rigidity of the beam - cantilever joint is relatively simple to formulate . The test ...
... natural frequency of vibration of the cantilever for each joint and the boundary conditions also measured , a model for the joint where the semi - rigidity of the beam - cantilever joint is relatively simple to formulate . The test ...
Page 659
... natural frequency and mode are investigated for cylindrical shell models with variations in water depth ratio . The validity of the calculation method of added mass was examined by the comparisons of natural frequencies with ...
... natural frequency and mode are investigated for cylindrical shell models with variations in water depth ratio . The validity of the calculation method of added mass was examined by the comparisons of natural frequencies with ...
Contents
CASE HISTORIES OFFSHORE STRUCTURES | 331 |
OFFSHORE TECHNOLOGY PART | 337 |
OFFSHORE STRUCTURE CONCEPTS | 361 |
Copyright | |
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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