计及随机海浪波面倾角影响的船底砰击压力概率分布  

Probability Distribution of Ship Bottom Slamming Pressure Considering the Randomness of Wave Surface Slope

作　　者：陈震[1] 肖熙[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院,上海200030

出　　处：《中国造船》2010年第4期28-35,共8页Shipbuilding of China

基　　金：国家自然科学基金资助项目(50709018);高等学校博士学科点专项科研基金资助课题

摘　　要：计及随机海浪波面倾角的影响,研究了船舶底部砰击压力的概率分布问题。在计算船底砰击压力时引入随机海浪的波面条件,根据海浪波面斜率和船波之间相对速度的统计特性导出砰击压力随机变量的概率密度函数。计算结果表明,计及随机海浪波面倾角影响的概率密度函数与试验结果更加一致。Considering the randomness of ocean wave surface slope, the probability distribution of ship bottom slamming is studied. The surface condition of random wave is introduced while the ship bottom slamming pressure is predicted, and also the effect of the wave surface slope on the pressure is discussed in the paper. According to the statistics characteristics of surface slope of ocean wave and the relative velocity of ship and wave, the probability density function of slamming pressure is deduced. The result shows that the probability distribution considering the randomness of ocean wave surface slope get a good agreement with the test value.

关 键 词：船舶 舰船性能 船舶底部砰击 海浪波面斜率 相对速度 概率分布 

分 类 号：U663.2[交通运输工程—船舶及航道工程]