Abstract This is Part II in a series of papers. Part I [1] investigated the slamming responses of flexible flat stiffened steel and aluminum plates using the nonlinear explicit finite element code LS-Dyna with the Multi-Material Arbitrary Lagrangian-Eulerian (MMALE) solver. Subsequently, a simplified finite element FSI model of water hitting structures that is realistically close to the slamming phenomenon occurring on the bottom part of offshore structures was proposed. The proposed FSI methodology presented in Part I was verified by comparison with the relevant test data. It was evident that the use of the proposed numerical method presented in Part I was very effective for a benchmarking investigation of slamming load considering the hydroelastic effect. However, the method required much effort in terms of computation time and power analysis resources. The present study, Part II, aimed, as an alternative to the FSI analysis approach, to develop empirical formulae for prediction of slamming loads acting on deformable flat stiffened plates used in marine applications. This paper begins by describing the limitations of the existing approaches based on theoretical, experimental and even numerical studies conducted in the past for estimation of slamming loads. Next, it presents, based on the simulation methodology developed in Part I, rigorous parametric studies that had been performed on actual scantlings of marine-seagoing structures. The effects of structural geometry and water impact velocity on slamming pressure are then investigated in detail. Subsequently, the parametric results are analyzed and utilized to derive empirical formulations for the prediction of slamming loads acting on flat stiffened plates of marine structures. The accuracy and reliability of the proposed formulations are established by comparison with the results of the test and other existing formulations. The proposed formulations are expected to be used for the purposes of the design without any time-consuming FSI analysis of advanced and optimal structures that are robust to slamming.

中文翻译：

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考虑流固耦合的砰击压力预测。第二部分：经验公式的推导

摘要 这是系列论文的第二部分。第 I 部分 [1] 使用非线性显式有限元代码 LS-Dyna 和多材料任意拉格朗日-欧拉 (MMALE) 求解器研究了柔性加筋钢和铝板的砰击响应。随后，提出了一种简化的水击结构有限元 FSI 模型，该模型真实地接近于发生在海上结构底部的砰击现象。通过与相关测试数据进行比较，验证了第一部分中提出的 FSI 方法。很明显，第一部分中提出的数值方法的使用对于考虑水弹性效应的砰击载荷的基准研究非常有效。然而，该方法在计算时间和功率分析资源方面需要付出很多努力。本研究，第二部分，旨在作为 FSI 分析方法的替代方法，开发经验公式，用于预测作用在海洋应用中使用的可变形平板加筋板上的砰击载荷。本文首先描述了现有方法的局限性，这些方法基于过去为估计砰击载荷而进行的理论、实验甚至数值研究。接下来，它基于在第 I 部分中开发的模拟方法，介绍了对海洋-海上结构的实际尺寸进行的严格参数研究。然后详细研究了结构几何形状和水冲击速度对砰击压力的影响。随后，对参数结果进行分析并利用其推导出经验公式，以预测作用在海洋结构平板加筋板上的砰击载荷。建议配方的准确性和可靠性是通过与测试结果和其他现有配方的比较来确定的。预计所提出的公式将用于设计目的，而无需对抗砰击的先进和最佳结构进行任何耗时的 FSI 分析。