Antisymmetric behaviour of pontoon and semi-submersible types of very large floating structure in regular oblique waves
Antisymmetric behaviour of pontoon and semi-submersible types of very large floating structure in regular oblique waves
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发表时间：
2004
影响因子：
2.9
通讯作者：
T. Phan;P. Temarel
中科院分区：
文献类型：
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作者：
T. Phan;P. Temarel
反对称波诱导响应的两种类型的VLFS（浮筒和半潜式），自由浮动在斜规则波预测，使用二维（仅在浮筒类型的情况下）和三维（对于两个VLFS）水弹性理论。反对称一词用来表示耦合的横摇、偏航和滚转运动以及扭转畸变。一个梁理想化的结构的浮筒型VLFS和条理论的流体柔性结构的相互作用被用于二维分析。另一方面，在三维分析中，两个VLFS的结构使用壳有限元进行理想化。流固耦合问题的解决方案是通过脉动源分布在VLFS的平均湿表面。对两种VLFS的“干”、“湿”船体动力特性进行了比较。此外，从二维和三维分析得到的预测进行了比较的浮筒VLFS。还研究了对航向的敏感性。
The antisymmetric wave-induced response of two types of VLFS (pontoon and semi-submersible), free-floating in oblique regular waves is predicted, using two-dimensional (in the case of the pontoon type only) and three-dimensional (for both VLFS) hydroelasticity theories. The term antisymmetric is used to denote coupled sway, yaw and roll motions and twisting distortions. A beam idealisation of the structure of the pontoon type VLFS and strip theory for the fluid-flexible structure interaction are used for the two-dimensional analysis. On the other hand, in three-dimensional analysis, the structures of the two VLFS are idealised using shell finite elements. The solution of the fluid-structure interaction problem is achieved through a pulsating source distribution over the mean wetted surface of the VLFS. Comparisons are carried out between the “dry” and “wet” hull dynamic characteristics of the two VLFS. In addition predictions obtained from both twoand threedimensional analyses are compared for the pontoon VLFS. The sensitivity to heading is also examined.