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 632
... added mass results . Samples of the added mass results are shown in Figure 8. The added mass in surge is not very frequency dependent . The COV is about 0.1 -0.15 . However , removing the above mentioned result ( with too coarse mesh ) ...
... added mass results . Samples of the added mass results are shown in Figure 8. The added mass in surge is not very frequency dependent . The COV is about 0.1 -0.15 . However , removing the above mentioned result ( with too coarse mesh ) ...
Page 659
... given by the superposition of mass matrix of a shell on added mass matrix induced by fluid mo- tion . Hence , [ M ] = [ Ms * ] + [ 659 Added Mass Analysis of Elastic Axisymmetrical Rotational Shell in Water Osamu Saijo and Nobukiyo ...
... given by the superposition of mass matrix of a shell on added mass matrix induced by fluid mo- tion . Hence , [ M ] = [ Ms * ] + [ 659 Added Mass Analysis of Elastic Axisymmetrical Rotational Shell in Water Osamu Saijo and Nobukiyo ...
Page 663
... Added mass matrix can be obtained by separating the ac- celeration in Eq . ( 53 ) : [ Ma ' ] = pw [ S ] [ H ] ̄1 [ G ] - ( 54 ) where [ M ' ] = added mass matrix normal to the shell element . In order to superpose the added mass to the ...
... Added mass matrix can be obtained by separating the ac- celeration in Eq . ( 53 ) : [ Ma ' ] = pw [ S ] [ H ] ̄1 [ G ] - ( 54 ) where [ M ' ] = added mass matrix normal to the shell element . In order to superpose the added mass to the ...
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