相比于散货船、油船等，超大型集装箱船的船体弹性效应，特别是弯扭耦合效应十分明显，本文主要研究弹性效应对目标船所受波浪载荷数值计算结果的影响。本文分别采用了有限元法计算船体弯扭耦合模态和迁移矩阵法计算弯扭不耦合模态。本文基于三维水弹性理论在考虑弯扭耦合效应的条件下，计算分析1艘2万箱级超大型集装箱船的载荷响应特性，并把计算结果和基于刚体假设的载荷计算结果进行对比。本文在不考虑船体弯扭耦合模态下，计算目标船的波浪载荷，并把其与考虑弯扭耦合效应下的结果进行对比。最终得出在计算超大型集装箱船波浪载荷时，弹性效应和弯扭耦合现象不可忽略的结论。
Compared with bulk carriers, oil tankers and so on, the springing of ultra large container ships, especially the coupling between bending and torsion, is very obvious. This paper mainly studies the effect of elastic effect on the numerical calculation of wave loads on the target ship. In this paper, the finite element method is used to calculate the bending-torsion coupling modes and the transfer matrix method is used to calculate bending-torsional uncoupling modes respectively. The paper analyses the wave load response of an ultra large container which can carry twenty thousand containers basing on 3D-hyroelastic theory and under the condition of including the bend-torsion coupling phenomenon and the calculation results are compared with those based on rigid body assumption. The paper comes to the conclusion that the phenomenon of bend-torsion coupling and springing cannot be ignored when calculating the wave loads of an ultra large container ship by means of comparing the results between the wave loads under the coupling of bending and torsion and the wave loads under the uncoupling of bending and torsion.
2019,41(3): 62-67 收稿日期：2018-01-28
DOI：10.3404/j.issn.1672-7649.2019.03.012
分类号：U663
作者简介：彭亚康(1993-),男,助理工程师,主要从事海洋结构物环境载荷与结构强度研究
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