Using wavelet transforms to analyze nonlinear ship rolling and heave-roll coupling

被引：22
|
作者：
Yu, Y
Shenoi, RA [1 ]
Zhu, HB
Xia, LJ
机构：
[1] Univ Southampton, Sch Engn Sci, Southampton SO17 1BJ, Hants, England
[2] Shanghai Jiao Tong Univ, Sch Naval Architecture Ocean & Civil Engn, Shanghai 200030, Peoples R China
来源：
OCEAN ENGINEERING | 2006年 / 33卷 / 07期
基金：
中国国家自然科学基金;
关键词：
wavelet transforms; ship; roll; heave-roll coupling; nonlinear; dynamic characteristics;
D O I：
10.1016/j.oceaneng.2005.05.014
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
The use of wavelet transforms is explored to investigate the nonlinear dynamical characteristics of ship roll and coupled heave-roll motion. The harmonic character, double period character and chaotic character are observed via a time-frequency window of the wavelet transform. Typical wave parameters in different stability regions are considered. Features such as restoring rolling, divergence rolling, steady state and chaotic responses of ship roll are obtained as well. The investigation in this paper not only highlights the feasibility of using wavelet transforms in the analysis of nonlinear dynamic characteristics of ship rolling in waves, but also shows how it could enhance the analysis abilities. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：912 / 926
页数：15
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