Enhancing impact resilience of thermal battery through honeycomb-structured aluminum buffering devices: Insights from large-scale gas-gun tests and simulations

IF 5.1 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Impact Engineering Pub Date : 2024-06-14 DOI:10.1016/j.ijimpeng.2024.105023

Yeon Taek Choi , Jihye Kwon , Hyungu Kang , Minu Kim , Ki Jong Kim , Jae Min Lee , Hae-Won Cheong , Sunghak Lee , Hyoung Seop Kim

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Abstract

Modern warfare relies heavily on electronic equipment, necessitating reliable energy sources like thermal batteries. Assessing their impact resilience, a study employed honeycomb-structured Al plates as buffering devices in a large-scale gas gun simulating artillery fire. Comparison between peak curves from gas-gun tests and simulations with varying honeycomb wall thicknesses revealed unique patterns, attributed to the buffering device's deformation-restoration process. Different honeycomb wall thicknesses led to varying deformation behavior and impact deceleration, complicating effective energy absorption assessment. Stepped honeycomb wall designs aimed to balance compression, extending energy absorption and reducing deceleration peaks. Prototype honeycomb buffering devices showed improved energy absorption and reduced deceleration during gas-gun tests. Gas-gun tests highlighted complexities in energy absorption assessment, with designs proposing improved energy absorption and reduced deceleration. The actual gas-gun test launched a projectile equipped with a thermal battery and buffering device, resulting in slight casing deformation, while battery cells remained intact, exceeding the standard discharge time (1 h).

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通过蜂窝结构铝缓冲装置增强热电池的抗冲击能力：大型气枪测试和模拟的启示

现代战争严重依赖电子设备，因此需要热电池等可靠的能源。为了评估其抗冲击能力，一项研究在模拟炮火的大型气枪中采用了蜂窝结构铝板作为缓冲装置。通过比较气枪试验和不同蜂窝壁厚模拟试验的峰值曲线，发现了独特的模式，这归因于缓冲装置的变形-恢复过程。不同的蜂窝壁厚度会导致不同的变形行为和冲击减速，从而使有效能量吸收评估变得更加复杂。阶梯式蜂窝壁设计旨在平衡压缩，延长能量吸收并降低减速峰值。在气枪试验中，原型蜂窝缓冲装置显示出更好的能量吸收能力和更低的减速度。气枪试验凸显了能量吸收评估的复杂性，其设计提出了改进能量吸收和降低减速度的建议。实际气枪试验发射了一枚装有热电池和缓冲装置的弹丸，导致外壳轻微变形，而电池单元保持完好，超过了标准放电时间（1 小时）。

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来源期刊

International Journal of Impact Engineering 工程技术-工程：机械

CiteScore

8.70

自引率

13.70%

发文量

241

审稿时长

52 days

期刊介绍： The International Journal of Impact Engineering, established in 1983 publishes original research findings related to the response of structures, components and materials subjected to impact, blast and high-rate loading. Areas relevant to the journal encompass the following general topics and those associated with them: -Behaviour and failure of structures and materials under impact and blast loading -Systems for protection and absorption of impact and blast loading -Terminal ballistics -Dynamic behaviour and failure of materials including plasticity and fracture -Stress waves -Structural crashworthiness -High-rate mechanical and forming processes -Impact, blast and high-rate loading/measurement techniques and their applications