摘要
将Lyapunov特性指数用于船舶非线性横摇运动稳定性分析,阐述了Lyapunov特性指数的计算方法。将Lyapunov特性指数作为船舶非线性运动混沌态的判据,给出了Lyapunov特性指数与船舶运动状态之间的关系,通过仿真试验验证了该算法的有效性,并进一步采用Lyapunov特性指数精确寻求船舶非线性横摇运动的阈值,分析了船舶非线性横摇运动的全局稳定性。
The stability of ship nonlinear rolling motion is analysesed used LCEs （Lyapunov Characteristic Exponents） in this paper. The LCEs are employed as the criteria for chaos in the field of chaotic detection for ship nonlinear rolling motion. The method calculating the LCEs of ship nonlinear rolling system is presented and the relation curves between the LCEs and ship morement are given. Simulation results show the method is validation. And the LCEs would be used to find the chaotic threshold of ship nonlinear rolling motion.
出处
《中国造船》
EI
CSCD
北大核心
2008年第3期1-6,共6页
Shipbuilding of China
