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 423
... impact can be larger than the extreme environ- mental loads and the ship impact can govern the design of the platform . This paper describes a detailed procedure for dy- namic analysis of fixed offshore platforms exposed to ship impacts ...
... impact can be larger than the extreme environ- mental loads and the ship impact can govern the design of the platform . This paper describes a detailed procedure for dy- namic analysis of fixed offshore platforms exposed to ship impacts ...
Page 429
... impact point on platform . Variation 2 : Variation of impact point along length of vessel . Variation 3 : Variation of type of impact . Variation 4 : Variation in deck size . For each case , simulations were run with a number of ...
... impact point on platform . Variation 2 : Variation of impact point along length of vessel . Variation 3 : Variation of type of impact . Variation 4 : Variation in deck size . For each case , simulations were run with a number of ...
Page 430
... impact is far the most unfavourable impact condition . There is a considerable increase in critical velocity when the impact point is moved away from the centre of gravity of the vessel along the length of the vessel . The critical ...
... impact is far the most unfavourable impact condition . There is a considerable increase in critical velocity when the impact point is moved away from the centre of gravity of the vessel along the length of the vessel . The critical ...
Contents
CASE HISTORIES OFFSHORE STRUCTURES | 331 |
OFFSHORE TECHNOLOGY PART | 337 |
OFFSHORE STRUCTURE CONCEPTS | 361 |
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acceleration accelerometers added mass amplitude axial behaviour bending stiffness cable calculated Campos Basin catenary coefficient components coordinate 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 flexible riser fluid free-fall lifeboat frequency domain hydrodynamic hydrodynamic damping impact in-span installation jack jacket joint launch length lifeboat lift force linear load Mathieu Mathieu equation measured Mechanics meters method mode mode shape motion natural frequency nodal nodes nonlinear obtained Offshore Structures Offshore Technology ASME OMAE operation oscillation parameters phase pile platform pressure ratio rotation seabed 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