Theoretical and experimental analysis of tethered buoy instability in gravity waves

被引：27

作者：

Radhakrishnan, Sreeram ^{[1
]}

Datla, Raju ^{[1
]}

Hires, Richard I. ^{[1
]}

机构：

[1] Stevens Inst Technol, Dept Civil Environm & Ocean Engn, Hoboken, NJ 07030 USA

来源：

OCEAN ENGINEERING | 2007年 / 34卷 / 02期

关键词：

Mathieu instability; parametric excitation; tethered spherical buoy;

D O I：

10.1016/j.oceaneng.2006.01.010

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 motion of a tethered spherical buoy subjected to incident regular waves was measured in a wave tank. Transverse instability was observed when the period of the wave generated was close to one-half of the natural period of the buoy. The transverse instability confirmed as Mathieu type was predominant at the surface but diminished with increase in the depth of submergence. The stable and unstable zones were determined on the Mathieu's instability diagram. Experimental results were in agreement with the predicted zone of instability for a two degree of freedom oscillation problem of Mathieu type which has a periodically varying spring constant. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：261 / 274

页数：14

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