水下爆炸载荷和随机风浪联合作用下破损舰船的运动及其倾覆概率计算

Calculation of the motion and capsizing probability of a damaged ship under the combined action of underwater explosion load and random waves

针对当前在水下爆炸载荷和随机风浪联合作用下,破损舰船运动及其倾覆概率的计算结果误差较大的问题,对其进行研究。分析爆炸冲击波传播速度对战斗状态舰船的影响,推导出战斗状态下舰船横摇幅度加剧程度,得到水下爆炸载荷的倾侧力矩,并研究稳定航行中舰船的航速与绝对风速之间的关系,通过理论力学建立破损舰船的横摇运动方程,得出随机风浪对航行中舰船的扰动力矩,基于现有的倾覆准则,计算出水下爆炸载荷和随机风浪联合作用下破损舰船的倾覆概率。通过实验,对该方法与传统方法的计算结果误差值进行对比。与传统计算方法相比,该方法所得到的结果误差明显减小。

Aiming at the problem of large error in calculating the motion and capsizing probability of damaged ship under the combined action of underwater explosion load and random wind and waves,this paper studies it.Analysis of the explosion shock wave propagation velocity influence on combat ships,combat is deduced under the ship rolling amplitude increase degree,get the heeling moment of underwater explosion load,and the stability of the voyage the ship speed and absolute speed,the relationship between the damaged ship was established through theoretical mechanics rolling motion equation,it is concluded that random wave disturbance torque of the voyage the ship capsizing criterion,based on existing calculate combination of underwater explosion load and random waves the capsizing probability of damaged ships.Through experiments,the error values of the calculated results of this method and the traditional method are compared.Compared with the traditional method,the error of the results obtained by this method is obviously reduced.