Responses of floating plates with the impact of moving excitations have been previously studied by several scholars. Generally, such structures were often assumed to be isotropic. Nonetheless, the directional-dependent bending stiffness should be considered for designing practical floating structures, especially for very large floating structures. Accordingly, this article aims to analyze hydroelastic responses of floating composite plates subjected to moving loads for the first time. For this, a novel numerical approach as a combination of boundary element method and moving element method which is named the BEM–MEM is proposed. In the this approach, governing equations of motion, moving element, and fluid matrices are formulated in a relative coordinate system traveling with moving loads. Consequently, the suggested paradigm can effectively eliminate difficulties in addressing the bound of computational domain and tracking the location of contact points which often encounter in the traditional finite element method owing to utilizing a fixed coordinate system. Several numerical examples are exhibited to demonstrate the performance and ability of the boundary element method-moving element method . Gained results are compared with those by the Fourier transform method and the asymptotic expression to verify the accuracy of the proposed methodology. The outcomes indicate that the speed of moving loads considerably affects the plate deflection. In addition, as the speed is larger than the minimum celerity of the free surface of hydroelastic system (Cmin), the influence of anisotropy on the deflection becomes significant.

中文翻译：

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移动荷载作用下浮动复合板的水弹性响应采用混合移动单元-边界单元法

一些学者先前已经研究了浮动板对移动激励影响的响应。通常，这种结构通常被认为是各向同性的。尽管如此，在设计实用的浮动结构时，尤其是对于非常大的浮动结构，应考虑与方向相关的弯曲刚度。因此，本文旨在首次分析浮动复合板在移动荷载作用下的水弹性响应。为此，提出了一种结合边界元法和移动元法的新型数值方法，称为 BEM-MEM。在这种方法中，运动控制方程、移动元件和流体矩阵在移动载荷移动的相对坐标系中被公式化。最后，所提出的范式可以有效地消除传统有限元方法由于使用固定坐标系而在解决计算域边界和跟踪接触点位置方面的困难。几个数值例子展示了边界元法-动元法的性能和能力。将得到的结果与傅里叶变换方法和渐近表达式的结果进行比较，以验证所提出方法的准确性。结果表明，移动载荷的速度显着影响板挠度。此外，由于速度大于水弹性系统自由表面的最小加速度（Cmin），各向异性对挠度的影响变得显着。