船舶对称响应的非线性水弹性微分分析法

NONLINEAR HYDROELASTIC DIFFERENTIAL ANALYSIS OF SHIPS RESPONDING TO WAVES

本文给出了一个预报波浪诱导的船舶垂向运动和结构总体动响应的非线性时域水弹性力学微分分析法。这一理论是控制论的分析方法应用于船体与流体非线性相互作用研究领域的尝试，其流固耦合系统的非线性时域水动力作用过程（含记忆效应）由一阶非齐次偏微分方程组来描述。理论预报与S175弹性材料船模实验比较，结果令人满意。

This paper presents a nonlinear hydroelastic differential analysis method of wave-induced vertical motions and structural responses of ships. The integral equation describing the relation between the time-domain fluid action and the displacement of the structure is approximated by a higher order differential equation, which is then reduced to a set of non-homogeneous first order partial differential equations to solve the coupled interaction problem. The numerical prediction shows good agreement with the experimental result of S175 elastic ship model test given by Watanabe et al[9].