Energy absorption of multicell thin walled structures filled with polyurethane infiltrated open cell aluminum foam.

IF 4.5 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

iScience Pub Date : 2026-09-22 eCollection Date: 2026-10-16 DOI:10.1016/j.isci.2026.117716

Peng Zhang, Yu'nan Chen, Yunbo Shi, Rui Zhao, Tao Guo, Hao'nan Guo, Liang Chen, Pengpeng Yu

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引用次数: 0

Abstract

Compact energy absorbers are needed to protect testing electronics in high-impact systems with limited installation space. Unlike previous studies that mainly examined tubular or fully filled configurations, this work investigates selective filling within a 12-mm-high multi-cell thin-walled structure. Partial and full configurations using aluminum foam (AF) and polyurethane-infiltrated aluminum foam (AF/PU) were evaluated through quasi-static compression, dynamic impact testing, finite element simulations, and theoretical analysis. Comparisons among five configurations and three wall thicknesses showed that filler distribution affected the balance between crushing resistance and effective crushing stroke. The partially filled AF/PU structure with a 1.2 mm wall thickness exhibited the best overall performance, absorbing 895.41 J quasi-statically and 984.40 J dynamically, with a volumetric specific energy absorption of 21.32 J/cm³ and crushing force efficiency of 0.84. Compared with full filling, selective AF/PU filling uses less filler while retaining greater deformation space, providing a practical strategy for compact impact protection.

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聚氨酯渗透开孔泡沫铝填充多孔薄壁结构的吸能研究。

在安装空间有限的高冲击系统中，需要紧凑的能量吸收器来保护测试电子设备。与以往的研究不同，该研究主要研究了管状或全填充结构，而此次研究的是12mm高的多细胞薄壁结构的选择性填充。通过准静态压缩、动态冲击测试、有限元模拟和理论分析，对泡沫铝（AF）和聚氨酯渗透泡沫铝（AF/PU）的部分和全部配置进行了评估。通过对5种结构和3种壁厚的比较，发现填料的分布影响了破碎阻力和有效破碎行程之间的平衡。1.2 mm壁厚的部分填充AF/PU结构整体性能最佳，准静态吸收895.41 J，动态吸收984.40 J，体积比能吸收21.32 J/cm3，破碎力效率为0.84。与全填充相比，选择性AF/PU填充使用更少的填料，同时保留更大的变形空间，为紧凑的冲击保护提供了实用的策略。

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

iScience Multidisciplinary-Multidisciplinary

CiteScore

7.20

自引率

1.70%

发文量

1972

审稿时长

6 weeks

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