Abstract Dynamic response of ship-hull structure under slamming has tracked widespread attention in the marine structural design. However, our understanding on the dynamic characteristics largely relies on the symmetrical slamming cases. This paper presented a preliminary numerical investigation on the dynamic response of a truncated ship-hull structure under asymmetrical slamming based on the uncoupled CFD-FE method. Asymmetrical slamming loads were predicted through combining the seakeeping analysis and CFD method. In there, three kinds of motions (vertical, horizontal and roll motions) of 2D ship sections were obtained through the seakeeping analysis and then the slamming pressure was predicted through simulating the water entry with various motions based on CFD method. The dynamic response was analyzed through finite element method. Numerical predictions including ship motions, slamming loads and dynamic analysis were validated against published experimental data and numerical calculations. The characteristics of asymmetrical slamming loads were analyzed showing obvious asymmetry in space, and the dynamic characteristic of the ship bow structure was further clarified through discussing the deformation and stress distribution. These results are useful for readers for better understanding the dynamic characteristics of the bow structure under slamming.

中文翻译：

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非对称砰击下截头船体结构动力响应数值研究

摘要 船体结构在砰击作用下的动力响应在海洋结构设计中受到广泛关注。然而，我们对动态特性的理解很大程度上依赖于对称的砰击情况。本文基于非耦合 CFD-FE 方法对非对称砰击下截头船体结构的动力响应进行了初步数值研究。结合耐波性分析和CFD方法预测了非对称砰击载荷。在那里，通过耐波性分析得到二维船截面的三种运动（垂直、水平和横摇运动），然后基于CFD方法通过模拟各种运动的进水来预测砰击压力。动力响应通过有限元方法进行分析。包括船舶运动、砰击载荷和动态分析在内的数值预测已根据已发表的实验数据和数值计算得到验证。分析了非对称砰击载荷在空间上表现出明显的非对称性，通过对变形和应力分布的讨论，进一步阐明了船艏结构的动力特性。这些结果有助于读者更好地理解艏艏结构在砰击下的动态特性。通过对变形和应力分布的讨论，进一步阐明了船艏结构的动力特性。这些结果有助于读者更好地理解艏艏结构在砰击下的动态特性。通过对变形和应力分布的讨论，进一步阐明了船艏结构的动力特性。这些结果有助于读者更好地理解艏艏结构在砰击下的动态特性。