Study on dissipation effects and mechanisms of lightweight spherical skeletons on impact loads in liquid-filled structures under high-speed projectile penetration

IF 6.6 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2026-05-01 Epub Date: 2026-03-03 DOI:10.1016/j.tws.2026.114741

Mengmeng Wu , Hailiang Hou , Nianming Hu , Dian Li , Jing Wu , Yongqing Li , Fang Huang

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引用次数: 0

Abstract

This study investigates the dissipation effects and underlying mechanisms of lightweight spherical skeletons (LSSs) embedded in liquid-filled structures under impact loads induced by high-speed projectile water entry. Leveraging the characteristics of shock waves and cavitation extrusion loads generated by high-speed projectile penetration, we designed shock tube experiments and ballistic impact tests, which were complemented by numerical simulations to quantify the dissipation effects of LSSs and analyze their working mechanisms. Results indicate that the LSSs can induce asynchronous reflection and transmission of shock waves. The average pressure peak attenuation rate of the wavefront follows a power law with the number of LSSs. Furthermore, the LSSs can effectively enhance the flow resistance of the liquid, mitigate cavitation extrusion loads on the structure, and thus significantly suppress the global deformation of the liquid-filled structure’s front and rear plates.

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高速弹丸侵彻下充液结构轻量球形骨架对冲击载荷的耗散效应及机理研究

本文研究了高速弹丸入水冲击载荷下嵌入液体结构的轻质球形骨架的耗散效应及其机制。利用高速弹丸侵彻产生的冲击波和空化挤压载荷特性，设计了激波管实验和弹道冲击试验，并辅以数值模拟，量化了lss的耗散效果，分析了其工作机理。结果表明，lss能诱导激波的非同步反射和传输。波前平均压力峰衰减率与lss数呈幂律关系。此外，lss可以有效提高液体的流动阻力，减轻空化挤压载荷对结构的影响，从而显著抑制充液结构前后板的整体变形。

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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.