【摘要】 本文研究了波浪力数值分析中的有限元-无限元方法（Finito-iuifinite Elomont Me-thod）。提出了一种新的无限单元。这种单元的形函数中,含育第一类零阶汉克尔函数,比以往采用的 e^-r/Le^tkr型无限单元更符合物理意义且计算简便。本文对水深为常数的可化为 x-y 平面的二维波浪力问题,推导了这种 H₀^（1）（kr）型无限单元的计算公式。应用本文推荐的有限元一无限元方法,设计了计算任意截面形状柱体所受波浪力的计算机程序。数值算例表明,本文的结果与理论解或其它数值方法给出的结果吻合很好。更多还原

【Abstract】 In this paper,the finite-infinite element method in numerical analysis of wave forces is examined and a new infinite element is presented.The H₀^（1）（kr）is contained in the shape functions of the element which is more reasonable from the view point of physics and much simpler for conputing than the element containing e^-r/Le^ikr in its shape functions.The formulations of the element have been derived in the case of x-y plan problem with constant water depth.The computer program which can be used for deter- mining wave forces on cylinders with arbitrary section is written by using the finite-infinite element method proposed in this paper.Two numeri- cal examples are investigated and the results using the method proposed show good agreement with analYtical solutions of those using other numeri- cal methods.更多还原