采用双向流固耦合（Fluid Structure Interaction，FSI）的CFD-FEA数值方法，对规则波工况中的充气式承重浮桥的运动响应和垂直弯矩进行预报。在FSI算法中，从CFD模型获得的波浪载荷与从FEA模型获得的浮桥运动和结构变形在迭代交错的双向耦合机制中相互交换。研究结果表明，在规则波工况中，充气式承重浮桥纵摇运动的幅值随着波浪周期的递增表现先增加后减小的趋势；在规则波工况中，垂荡运动的幅值随着波浪周期的递增表现增大的趋势。充气式承重浮桥中剖面的垂直弯矩随波浪周期的增加呈先增大后减小的趋势。通过与充气式承重浮桥的联合仿真，验证了所开发耦合方法能够模拟波浪载荷下浮桥运动响应和结构变形范围内的大部分物理特性，推动了浮桥设计理论的发展。
The numerical CFD-FEA method with a two-way fluid structure interaction (FSI) is used to predict the inflatabie load-bearing floating bridge motion responses and structural deformation in regular wave conditions. In the FSI algorithm, the wave loads obtained from the CFD model are exchanged with the floating bridge motions and structure deformations obtained from the FEA model in an iteratively interleaved two-way coupling mechanism. The results show that, In regular wave conditions, the amplitude of the pitch motion of the inflatable load- bearing floating bridge shows a trend of first increasing and then decreasing with the increase of wave period. In regular wave conditions, the amplitude of heave motion shows an increasing trend with the increase of wave period. The vertical bending moment of the mid section of the inflatable load-bearing floating bridge shows a trend of first increasing and then decreasing with the increase of wave period. Through co-simulation with the inflatable load-bearing floating bridge, it is verified that the developed coupling method can simulate most of the physical characteristics of motion response and structural deformation of floating bridges under wave loads, promoting the development of floating bridge design theory.
2024,46(24): 115-120 收稿日期：2024-1-22
DOI：10.3404/j.issn.1672-7649.2024.24.020
分类号：P751
基金项目：华东勘测设计研究院基金资助项目（ZKY2023-HCDK-03-06）
作者简介：赵建成(1998-),男,硕士,工程师,研究方向为船舶与海洋工程水动力
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