摘要
研究一类非线性船舶在随机波上的倾覆概率仿真。船舶在给定随机波上的、直到颠覆的大幅度横摇可用一个四元非线性方程表示;假定噪声为白噪声的情况下,该方程通过转化可被改写成对应的二阶随机微分方程;基于半离散数值解法,设计了一类非线性船舶在随机波上的倾覆概率仿真算法,该方法简单,易于工程应用;给出实例演示了方法的应用,验证了算法的有效性。
Capsize probability simulation on a kind of nonlinear ship system under stochastic wave is discussed.Large-amplitude rolling motion of a ship under stochastic wave can be expressed as a quaternion nonlinear equation.The wave is assumed as white noise,and the quaternion nonlinear equation can be rewritten into corresponding stochastic second order differential equation based on transformation.Capsize probability simulation on a kind of nonlinear ship system under stochastic wave algorithm is designed based on semi-discrete numerical algorithm.Examples are given to illustrate the application of the method and results show the efficiency of the algorithm
出处
《计算机工程与应用》
CSCD
北大核心
2011年第13期15-17,62,共4页
Computer Engineering and Applications
基金
广东省自然科学基金No.06300261
2010年广州市番禺区科技计划(No.2010-Z-43-1)~~
关键词
仿真
船舶
非线性
随机
simulation
ship
nonlinear
stochastic
