TIME DOMAIN ANALYSIS ON THE DYNAMIC RESPONSE OF A FLEXIBLE FLOATING STRUCTURE TO WAVES
TIME DOMAIN ANALYSIS ON THE DYNAMIC RESPONSE OF A FLEXIBLE FLOATING STRUCTURE TO WAVES
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DOI：
10.1061/(asce)0733-9399(2002)128:1(48
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
Xiaodong Liu;S. Sakai
中科院分区：
文献类型：
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作者：
Xiaodong Liu;S. Sakai
本文提出了一种分析波浪作用下柔性浮体水弹性响应的时域数值方法，其中采用边界元法计算流体运动，采用有限元法计算结构的弹性变形。通过规定每个时间步长的波生成边界上的条件以及通过满足流体-结构界面上的压力和位移的连续性来模拟动态波-结构相互作用。时域解是通过预测-校正方法和时间步进计算得到的。通过数值解之间的比较，讨论了空间离散和时间离散对规则波、随机波和孤立波解的收敛性和稳定性的影响。通过与上述三种波的实验结果的比较，验证了本文方法的有效性。此外，在数值分析和实验中都观察到了柔性浮体下孤立波的分裂现象。
A time-domain numerical method is developed to analyze the hydroelastic responses of flexible floating structures to waves; in which, the boundary element method is applied to evaluate the fluid motion and the finite-element method to analyze the elastic deformation of structure. The dynamic wave-structure interaction is simulated by prescribing the conditions on a wave generation boundary for each time step and by satisfying the continuity of the pressure and displacement on the fluid-structure interface. A time-domain solution is obtained in a predictor-corrector scheme and through a time-stepping computation. The effect of space and time discretizations on the convergence and stability of solution for regular, random and solitary waves is discussed by comparing among numerical solutions. The validity of the present method is verified by comparing it with the experimental results for the three kinds of waves mentioned. Further, the fission of a solitary wave under a flexible floating structure is observed both in numerical analysis and experiments.