计及水-空气-结构耦合的结构砰击载荷预报方法研究

船舶在恶劣海况下航行时，船体与波浪之间会发生剧烈的砰击现象，严重时会造成船体局部结构损坏或降低船舶总纵强度。随着工业技术的革新和海洋资源开发的需要，当代船舶不断向高速化和大型化发展，船舶发生砰击现象的概率也越来越高。开展结构砰击特性研究，准确地预报结构物的砰击载荷，对船舶航行和人员安全有重要的意义。本文基于水动力学软件 Fine/Marine，建立水域-空气域-结构耦合的分析模型，对楔形结构的砰击特性进行数值仿真分析，并研究不同斜升角及不同入水速度对砰击载荷的影响。

Research on the prediction method for structural slamming loads considering water-air-structure coupling

While ships sail in rough sea condition,slamming will happen between the hull and waves,which could damage local structure and reduce the longitudinal strength in severe cases. With the innovation of industrial technology and the needs of developing marine resources,modern ships continuously develop toward high speed and large scale,so the probability of slamming becomes increasingly higher. It has important significance for the navigation of ships and personnel safety to study the slamming characteristics of structure and predict the slamming loads accurately. This paper set water-air-structure coupling models and analyzed the slamming characteristics of wedges by the numerical simulation based on FineMarine. Moreover,the influences caused by different deadrise angles and different entry speeds on slamming loads have been studied.