计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (13): 15-17.

• 博士论坛 • 上一篇    下一篇

一类非线性船舶在随机波上的倾覆概率仿真

徐荣华,宋亚男,王钦若   

  1. 广东工业大学 自动化学院,广州 510006
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-05-01 发布日期:2011-05-01

Capsize probability simulation on kind of nonlinear ship system under stochastic wave

XU Ronghua,SONG Yanan,WANG Qinruo   

  1. College of Automation,Guangdong University of Technology,Guangzhou 510006,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-05-01 Published:2011-05-01

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。

关键词: 仿真, 船舶, 非线性, 随机

Abstract: 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.

Key words: simulation, ship, nonlinear, stochastic