【摘要】 船舶大幅横摇运动是复杂的非线性问题,也是导致船舶倾覆的主要原因之一。该文通过对随机海浪下船舶非线性横摇运动进行分析,建立了横摇运动微分方程,采用数值方法在时域内对微分方程进行积分,模拟了船舶横摇运动响应,并研究了一实船在随机海浪中安全池的破损情况,得出该船的生存概率,分析了不同有义波高和航速下生存概率的变化。研究表明,数值方法以及安全池理论可用于预测船舶在随机海浪中的生存概率,从而可为船舶稳性衡准提供相关的参考。更多还原

【Abstract】 The large amplitude rolling is a complicated nonlinear problem,it is also one of the main reasons leading to ship capsize.By analyzing nonlinear rolling motion of the ship in irregular waves,the differential equation of ship rolling motion has been established.The differential equation is integrated in time domain by the numerical method and the roll responses of the ship are simulated.The erosions of the safe basins of a typical ship are investigated and the survivability of the ship is obtained.The variations of survival probabilities in different sea states and vessel speeds are analyzed.The results show that the numerical method and the safe basin theory are available to predict the survival probabilities of the ship in irregular waves and provide valuable information to the ship stability criterions.更多还原