Dual inclined perforated anti-motion plates for mitigating hydroelastic response of a VLFS under wave action
Dual inclined perforated anti-motion plates for mitigating hydroelastic response of a VLFS under wave action
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双倾斜穿孔防震板，用于减轻 VLFS 在波浪作用下的水弹性响应
DOI：
10.1016/j.oceaneng.2016.05.044
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发表时间：
2016-07
影响因子：
5
通讯作者：
Gaidai Oleg
中科院分区：
文献类型：
--
作者：
Yong Cheng;Chunyan Ji;Gangjun Zhai;Gaidai Oleg
本文采用解析法、数值法和试验方法研究了一个带有双层水平/倾斜开孔板的席状矩形超大型浮体结构的水弹性响应。在解析方法中，采用多区域本征函数展开匹配法（EEMM）求解衍射势和辐射势，然后用瑞利-里兹法求解弹性运动方程。在数值模型中，采用有限元法（FEM）得到了含有离散Mindlin板单元的VLFS的模态特征向量方程，而采用边界元法（BEM）求解水波方程。混合有限元-边界元法（FEM-BEM）的解决方案，进一步采用更一般的情况下，包括倾斜的穿孔抗运动板。分析和数值解也验证了一系列的实验测试。系统地评估了双穿孔板在减小VLFS挠度方面的有效性，对于各种波浪和板参数，并且通过选择适当的设计参数可以显着提高抗运动装置的性能。在此基础上，进一步分析了不同下孔板位置对超大型浮体结构响应的影响。
This paper investigates the hydroelastic responses of a mat-like, rectangular very large floating structure (VLFS) edged with dual horizontal/inclined perforated plates using analytic method, numerical method and experimental test. In the analytic method, the eigenfunction expansion-matching method (EEMM) for multiple domains is applied to evaluate the diffraction and radiation potentials, and then the elastic equation of motion is solved by the Rayleigh–Ritz method. In the numerical model, the modal eigenvector equation of the VLFS with some discrete Mindlin plate elements are obtained by using the finite element method (FEM), whereas the boundary element method (BEM) is applied to solve the water wave equation. The hybrid finite element method-boundary element method (FEM-BEM) solutions are further employed for more general cases including inclined perforated anti-motion plates. Both analytic and numerical solutions are also validated against a series of experimental tests. The effectiveness of dual perforated plates in reducing the deflections of VLFS, is systematically assessed for various wave and plate parameters, and the performance of the anti-motion device can be significantly improved by selecting the proper design parameters. Based on the selected optimal parameters, the response reduction of VLFS with different locations of lower perforated plate is further highlighted.
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影响因子：
0.8
作者：
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通讯作者：
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影响因子：
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