本文采用显式有限元方法预报船首外飘砰击载荷。通过对比小尺度外飘模型的自由落体砰击试验值和相应的数值模拟结果，验证了该方法在预报船首外飘砰击载荷方面的可行性。针对2种不同结构形式的实船尺度的外飘剖面，预报了剖面在船体与波浪相对运动规律下的砰击载荷，研究了流动分离后的二次砰击现象，并进一步探讨了网格密度和接触刚度参数对不同剖面形式外飘砰击载荷的影响。
An explicit finite element method is adopted to forecast bowflare slamming loads. By comparing the free falling test values of a small-scale bowflare model with the corresponding numerical simulation results, the numerical method proves reliable to forecast bowflare slamming loads. Through simulating the slamming process of two different bowflare sections of real ship scale, on the condition that the track of the sections is consistent with the relative movement between the hull and the wave, the secondary slamming phenomenon after flow separation is studied and the effects of mesh density and contact stiffness parameters on bowflare slamming loads are further explored.
2018,40(3): 35-41 收稿日期：2017-05-03
DOI：10.3404/j.issn.1672-7649.2018.03.007
分类号：U661
基金项目：中央高校基本科研业务费资助项目（3132017032）；国家重点研发计划重点专项资助项目（2016YFC0301500）
作者简介：于鹏垚(1988-),男,博士,讲师,研究方向为船舶与水下航行器水动力与运动性能分析
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