Investigation on the coupling damage effects of ships subjected to near-field underwater explosion loads

IF 4 2区工程技术 Q1 ENGINEERING, CIVIL

Marine Structures Pub Date : 2024-07-10 DOI:10.1016/j.marstruc.2024.103664

Ruiyuan Huang , Yipeng Jiang , Jian Qin , Xiangyao Meng , Hui Chi , Xiaoqiang Yang , Xianhui Zheng , Zhichao Lai

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引用次数: 0

Abstract

Near-field underwater explosions generate complex load forms and cause destructive strikes on ships. To investigate the damage characteristics of ships under the combined effect of multiple loads, local and overall damage modes were first investigated through the combination of experimental tests and numerical simulation. Then a series of numerical simulations of full-scale ships subjected to near-field underwater explosions with different stand-off distances, equivalents, and detonation positions were carried out. The damage effects of shock wave, bubble pulsation, after flow, and water jet loads on ships were analyzed. The results show that the combined effects of different loads lead to different damage modes. Shock waves and after flow loads are the main cause of local damage and hogging damage, while pressure difference and bubble adsorption are the main reasons for the hogging damage. Finally, a criterion was proposed to determine the damage modes of ships under near-field underwater explosions.

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船舶在近场水下爆炸荷载作用下的耦合损伤效应研究

近场水下爆炸会产生复杂的载荷形式，对船舶造成破坏性打击。为了研究多重载荷共同作用下的船舶破坏特征，首先通过实验测试和数值模拟相结合的方法研究了局部和整体破坏模式。然后，对遭受不同距离、当量和引爆位置的近场水下爆炸的全尺寸船舶进行了一系列数值模拟。分析了冲击波、气泡脉动、后流和水射流载荷对船舶的破坏效应。结果表明，不同载荷的综合效应会导致不同的破坏模式。冲击波和后水流载荷是造成局部损坏和阻塞损坏的主要原因，而压力差和气泡吸附则是造成阻塞损坏的主要原因。最后，提出了近场水下爆炸下船舶损坏模式的判据。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Marine Structures 工程技术-工程：海洋

CiteScore

8.70

自引率

7.70%

发文量

157

审稿时长

6.4 months

期刊介绍： This journal aims to provide a medium for presentation and discussion of the latest developments in research, design, fabrication and in-service experience relating to marine structures, i.e., all structures of steel, concrete, light alloy or composite construction having an interface with the sea, including ships, fixed and mobile offshore platforms, submarine and submersibles, pipelines, subsea systems for shallow and deep ocean operations and coastal structures such as piers.