客滚船首尾部砰击计算研究

Study on the Bow and Stern Slamming Calculation of Ropax Ships

客滚船的特殊线型——艏部外飘幅度较大和艉部的扁平肥大型结构,在营运过程中易受到砰击载荷的作用。由于该类船舶砰击问题显著,故一直是业内研究的热点。以某客滚船为例,针对其艏艉结构进行砰击计算,采用计算量适中,且可实现砰击载荷预报的频域法,将砰击载荷映射到相应各部分的有限元计算模型上,经计算分析,得到艏艉结构在砰击压力下的应力结果,最终实现对客滚船砰击强度的安全评估。整个计算探讨过程,可供同类船舶的设计研究人员借鉴。

Ropax ships have special lines-with larger bow flares and flat full stern structures, which are vulnerable to the slamming load during operation. Because slamming is an important issue for this ship type, it has constantly been the research focus. Taking a ropax ship as an example, this study performs the slamming calculation for bow and stern structures using the frequency domain method, which only requires moderate computation and can predict the slamming load;the slamming load is then mapped to the finite element model, to compute the stress distribution of the bow and stern structures under the slamming pressure, and to finally realize the safety evaluation of ropax slamming strength. The whole discussion on the computation procedure can provide some reference for designer of similar ship types.