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Hydroelastic analysis of cantilever plate in time domain

机译:悬臂板的时域水弹性分析

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Numerical solutions for the hydroelastic problems of bodies are studied directly in the time domain using Neumann-Kelvin formulation. In the hydrodynamic part of problem, the exact initial boundary value problem is linearized using the free stream as a basis flow, replaced by the boundary integral equation applying Green theorem over the transient free surface Green function. The resultant boundary integral equation is discretized using quadrilateral elements over which the value of the potential is assumed to be constant and solved using the trapezoidal rule to integrate the memory or convolution part in time. In the structure part of the problem, the finite element method is used to solve the hydroelastic problem. The Mindlin plate as a bending element, which includes transverse shear effect and rotary inertia effect are used. The present numerical results show acceptable agreement with experimental, analytical, and other published numerical results.
机译:使用Neumann-Kelvin公式在时域中直接研究了物体的水弹性问题的数值解。在问题的流体力学部分,使用自由流作为基本流将精确的初始边界值问题线性化,由在瞬态自由表面Green函数上应用Green定理的边界积分方程代替。使用四边形元素对结果边界积分方程进行离散化,在该四边形元素上假定势值恒定,并使用梯形法则进行求解以及时积分存储或卷积部分。在问题的结构部分,采用有限元方法求解水弹性问题。使用Mindlin板作为弯曲元件,包括横向剪切效应和旋转惯性效应。本数值结果显示与实验,分析和其他已公布的数值结果可接受的一致性。

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