随机海况下的非线性船舶横摇和倾覆  

Nonlinear Rolling and Capsizing of Ships in Rough Sea

作　　者：张丽[1] 刘习军[1] 唐友刚[2] 

机构地区：[1]天津大学力学系,天津300072 [2]天津大学船舶与海洋工程系,天津300072

出　　处：《舰船科学技术》2002年第4期23-26,共4页Ship Science and Technology

基　　金：国家自然科学基金资助项目 (10 172 0 6 4 )

摘　　要：本文考虑波浪的随机性和船舶恢复力矩及阻尼的非线性 ,提出了船舶在随机海浪上航行时的横摇运动方程。根据非线性随机动力学的理论和方法 ,提出了时域横摇非线性随机运动计算方法 ,研究了横摇的非线性和随机动力学行为 ,并对实船在不同有义波高下的动力响应进行了计算 。Taking into account the rough sea and the nonlinearity of shipping restoring moment and damping, the nonlinear differential equation of ship rolling in irregular waves is presented. According to the theory and method of nonlinear random dynamic, the calculation method of nonlinear rolling motion in time domain is put forward. The nonlinearity and random dynamic behaviors of ships rolling are studied, and the dynamical responses of vessel on different significant wave height are calculated. The example shows that the method in this paper is feasible.

关 键 词：随机海况 非线性 船舶横摇 稳性 船舶倾覆 

分 类 号：U661.22[交通运输工程—船舶及航道工程]