五体船波浪载荷特性及侧体布局影响规律分析

摘要/Abstract

摘要： 基于三维势流理论，计算了五体船主船体横剖面和前后侧体连接桥上的纵剖面在规则波中的垂向剪力、垂向弯矩和扭矩波浪载荷响应RAO，分析了波浪载荷RAO最大值沿船体分布规律以及浪向对载荷的影响规律,得到了载荷较大剖面位置.在非规则波中，通过比较不同侧体布局的五体船波浪载荷有义幅值的大小，得到了后侧体纵向位置、前后侧体横向位置以及前侧体垂向位置变化对五体船波浪载荷的影响规律和侧体最优布局方案，并与三体船波浪载荷计算结果做比较.结果表明：后侧体布置于距船尾1/4船长区域附近较优，侧体横向位置和前侧体垂向位置变化主要影响连接桥内波浪载荷，前侧体的存在能有效减小后侧体连接桥的波浪载荷.

关键词: 五体船, 三维势流理论, 侧体布局, 波浪载荷, 非线性

Abstract: Based on the threedimensional potential theory, the waveinduced loads response RAO of the pentamaran, including the vertical shear force, vertical bending moment and torsion moment at the main hull and the crossstructure sections, was studied. The dangerous sections were derived by the analyses of the distribution of the RAO’s maximum value and the influence of the wave direction. Considering the nonlinear factors, the time history of the wave loads at the dangerous sections with respect to different sponsons’ layouts in irregular wave was calculated, then the significant values of the wave loads amplitude were compared to analyze the influence of the sponsons’ layouts on the wave loads at the dangerous sections, and the optimal arrangement of the sponsons was achieved. Meanwhile, the wave loads were compared with Trimaran. The results demonstrate that the wave loads both on the main hull and crossstructure are smaller when the after sponsons lying at aft quarter length, while the transverse location of the sponsons and the vertical location of the front sopnsons mainly affect the wave loads on the crossstructure, and the existence of the front sponsons can efficiently decrease the wave loads on the crossstructure of the after sponsons.

Key words: pentamaran, three-dimensional potential theory, sponsons&rsquo, layout, wave loads, nonlinear

中图分类号:

U 674.951

文俊华, 陈震. 五体船波浪载荷特性及侧体布局影响规律分析 [J]. 上海交通大学学报（自然版）, 2012, 46(08): 1230-1237.

WEN Jun-Hua, CHEN Zhen. Study on Wave Loads Characteristic of Pentamaran and the Influence of Sponsons’ Layout[J]. Journal of Shanghai Jiaotong University, 2012, 46(08): 1230-1237.

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