上海交通大学学报

上海交通大学学报（自然版）

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船舶外飘砰击有效砰击角概率分布

陈震，张世联，肖熙
  

  1. (上海交通大学 船舶海洋与建筑工程学院， 上海 200240)
  • 收稿日期:2009-11-02 修回日期:1900-01-01 出版日期:2010-10-31 发布日期:2010-10-31

Probability Distribution of Effective Impact Angle of Ship Bow Flare Impact

CHEN Zhen,ZAHNG Shilian,XIAO Xi
  

  1. (School of Naval Architecture, Ocean and Civil Engineering, Shanghai Jiaotong University, Shanghai 200240, China)

  • Received:2009-11-02 Revised:1900-01-01 Online:2010-10-31 Published:2010-10-31

摘要： 基于海浪波面斜率的随机性，研究了船舶外飘砰击有效砰击角的概率分布问题.将垂直法平面内船体表面斜升角在初始纵剖线角处泰勒展开，根据船舶运动的随机特性推导了船体表面斜升角的概率密度函数；在随机海浪波面斜率、波面倾角的统计规律和波浪破碎判据条件的基础上，推导了有效砰击角随机变量的概率密度函数，为进一步研究船舶外飘砰击载荷的概率预报方法奠定了基础.

关键词: 外飘砰击, 波面斜率, 有效砰击角

Abstract: Based on the randomness of wave surface slope, the probability distribution of effective impact angle of bow fare impact was studied. The deadrise angle at the impact region of ship hull surface was expanded with Taylor series in the vertical normal plane, and the probability density function for the angle was derived on the basis of random characteristics of ship motion response. In terms of the theory of random ocean waves and Chuang’s analytical method of slamming pressures for vehicles, the probability density function for the effective impact angle was derived, providing basis for further study of the probability prediction method of bow flare impact.

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