Experimental and numerical studies on the effect of sandwich structures on the dynamic response of ship sections subjected to underwater explosions

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-09-10 DOI:10.1016/j.tws.2025.113969

Zhiyuan Wang , Shijie Yang , Lihong Yang , Weizheng Xu , Yalun Dong , Dian Li , Jia Qu , Linzhi Wu

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引用次数: 0

Abstract

The enhancement of underwater explosions resistance is of great significance for improving the survivability of warships. Experimental and numerical studies were conducted on the dynamic response of a ship section equipped with the corrugated sandwich protective structures, under underwater explosion loading. Three configurations of corrugated sandwich protective structures were designed and the acceleration, spectral velocity and stress response of ship section measuring points are systematically analyzed. The results show that compared with the ship section without sandwich protection structure, equipping sandwich structure can significantly reduce the peak acceleration and stress at each measuring point of the ship section, attenuate the dynamic response faster, and lower the platform value of the velocity response spectrum. The multi-layer double-corrugated sandwich structure has superior energy absorption and plastic deformation capabilities, thereby enhancing the protection of the ship section. The findings provide practical insights for the structural optimization of naval protective systems under underwater explosion conditions.

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水下爆炸作用下夹层结构对船体动力响应影响的实验与数值研究

提高水下抗爆性能对提高军舰的生存能力具有重要意义。对装有波纹夹层结构的船体截面在水下爆炸荷载作用下的动力响应进行了试验和数值研究。设计了三种波纹夹层防护结构构型，系统分析了船体截面测点的加速度、速度谱和应力响应。结果表明，与未安装夹层结构的船体截面相比，安装夹层结构可以显著降低船体截面各测点的峰值加速度和应力，更快地衰减动力响应，降低速度响应谱的平台值。多层双波纹夹层结构具有优越的吸能和塑性变形能力，从而增强了对船截面的保护。研究结果为水下爆炸条件下舰船防护系统的结构优化提供了实用见解。

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

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.