船舶非线性横摇的精确模型  

THE EXACT MODEL OF SHIP NONLINEAR ROLLING

作　　者：徐德嘉[1] 周庆根[1] 

机构地区：[1]海军工程学院

出　　处：《中国造船》1990年第4期11-23,共13页Shipbuilding of China

摘　　要：本文以Taylor级数展开法表示横摇非线性模型的一般表达式,采用一阶谐波平衡法求其定常周期解,对运动稳定性,跳跃现象及最大摇幅特性进行了分析计算。 本文依据横摇力矩激振装置进行的船模激振横摇试验结果,提出了一套较完整的横摇非线性模型的辨识技术。实例表明横摇非线性模型的辨识效果圆满且可靠。 本文还对非线性横摇的分支跳跃现象可能造成的船舶倾覆机理作了初步探讨。The paper presents general expressions of the nonlinear rolling model by Taylor series expansion. The steady periodieal solutions of ship rolling are obtained by using first order harmonic balance method. The motion stability, Jump phenomenon and characteristic of the maximum rolling amplitude are also analyzed.A comparatively complete technique to identify the rolling nonlinear model is developed according to the results of excited rolling tests of ship model using rolling moment exciter. An example for identifying the rolling nonlinear model illustrates that the results are satisfactory and reliable.The possible dynamic capsizing due to branch jump phenomen on of the nonlinear rolling is also investigated.

关 键 词：船舶 精确模型 横摇特性 非线性模型 谐波平衡法 辨识技术 倾覆机理 

分 类 号：U661.321[交通运输工程—船舶及航道工程]