INVESTIGATION OF HYDROELASTIC BEHAVIOR OF A PONTOON-TYPE VLFS DURING UNSTEADY EXTERNAL LOADS IN WAVE CONDITION USING A HYBRID FINITE ELEMENT-BOUNDARY ELEMENT (FE-ME) METHOD
INVESTIGATION OF HYDROELASTIC BEHAVIOR OF A PONTOON-TYPE VLFS DURING UNSTEADY EXTERNAL LOADS IN WAVE CONDITION USING A HYBRID FINITE ELEMENT-BOUNDARY ELEMENT (FE-ME) METHOD
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使用混合有限元-边界元 (FE-ME) 方法研究波浪条件下不稳定外部载荷下浮桥型 VLFS 的水弹性行为
DOI：
10.21278/brod68402
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发表时间：
2017-12
期刊：
影响因子：
1.8
通讯作者：
Fan Tianhui
中科院分区：
文献类型：
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作者：
Cheng Yong;Ji Chunyan;Zhai Gangjun;Fan Tianhui
基于时域模态展开理论，采用基于时域Kelvin源的边界元法计算水动力，采用有限元法求解浮箱型超大型浮体结构的挠度，研究了浮箱型超大型浮体结构在波浪条件下受非定常外载荷作用时的水弹性行为。在分析中，采用插值-制表法快速准确地求解有限水深下的自由面绿色函数，并利用流场和结构的对称性，进一步建立了四分之一VLFS模型的边界积分方程。基于Mindlin板理论，将VLFS模型化为等效固体板。采用板-水耦合模型，分别计算了飞机结构在大质量撞击和移动载荷作用下的波浪响应和瞬态响应。这些结果与已有的数值结果和实验结果进行了验证。然后，开发的数值工具中使用的联合行动的研究，考虑到质量下降/飞机着陆，以及向前或反向入射波的行动。通过系统的时域仿真，给出了跑道的偏转、垂直位置的时间历程和飞机的飞行轨迹，说明了本文数值解的有效性。
The hydroelastic behavior of a pontoon-type VLFS subjected to unsteady external loads in wave condition is investigated in the context of the time-domain modal expansion theory, in which the boundary element method (BEM) based on time domain Kelvin sources is used for hydrodynamic forces and the finite element method (FEM) is adopted for solving the deflections of the VLFS. In this analysis, the interpolation-tabulation scheme is applied to assess rapidly and accurately the free-surface Green function in finite water depth, and the boundary integral equation of a quarter VLFS model is further established taking advantage of symmetry of flow field and structure. The VLFS is modeled as an equivalent solid plate based on the Mindlin plate theory. The coupled plate-water model is performed to determine the wave-induced responses and transient behavior under external loads such as a huge mass impact onto the structure and moving loads of an airplane, respectively. These results are verified with existing numerical results and experimental test. Then, the developed numerical tools are used in the study of the combined action taking into account of the mass drop/airplane landing as well as forward or reverse incident wave action. The deflections of the runway, the time history of vertical positions and the trajectory of the airplane are also presented through a systematic time-domain simulation, which illustrates the usefulness of the presently developed numerical solutions.
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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
影响因子：
5
作者：
Yong Cheng;Chunyan Ji;Gangjun Zhai;Gaidai Oleg
通讯作者：
Gaidai Oleg
DOI：
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发表时间：
1990
期刊：
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影响因子：
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作者：
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通讯作者：
Yujia Wu;J. Xia;S. Du
影响因子：
2.4
作者：
I. Senjanović;N. Vladimir;Marko Tomić
通讯作者：
I. Senjanović;N. Vladimir;Marko Tomić
影响因子：
5
作者：
Yong Cheng;C. Ji;Zhe Ma;G. Zhai;Gaidai Oleg
通讯作者：
Yong Cheng;C. Ji;Zhe Ma;G. Zhai;Gaidai Oleg
DOI：
--
发表时间：
2012
期刊：
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影响因子：
--
作者：
通讯作者：
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