骑浪/横甩薄弱性衡准和模型试验研究

目前国际海事组织(IMO)正在制定的第二代完整稳性衡准,其中就包括骑浪/横甩薄弱性衡准。文章首先介绍了最新骑浪/横甩薄弱性衡准方法,应用自编的衡准软件进行样船计算,分析了当前衡准的适用性。其次,开展了内倾船型在随浪和尾斜浪中的骑浪/横甩试验,试验中获得了四种与骑浪/横甩相关的运动特性:周期运动、稳定骑浪、横甩和横甩导致的倾覆,而且在某波浪条件下观察到船舶连续发生三次横甩的现象。最后,将内倾船型的骑浪/横甩薄弱性衡准计算结果与试验结果进行对比,验证了衡准方法对于内倾船型的适用性。

Study on Vulnerability Criteria and Model Experiment for Surf-Riding/Broaching

The vulnerability criteria for surf-riding and broaching are currently under development at the International Maritime Organization (IMO) for the second generation intact stability criteria. In this paper, the vulnerability criteria for surf-riding and broaching are introduced, and the calcula-tions of seven sample ships are conducted to analyze the applicability of the current vulnerability criteria. And then a model experiment with a tumblehome vessel for surf-riding and broaching in fol-lowing and stern-quartering waves is carried out. Four types of ship motions with periodic motion, stable surf-riding, broaching and capsizing due to broaching are observed in the model experiment while broaching is observed three times in one wave case. Finally, the results between the criteria calculations and the model experiment are compared to verify the applicability of vulnerability crite-ria for the tumblehome vessel.