冲击荷载作用下钢-混凝土梯度泡沫铝吸能板的试验与数值研究

IF 4.3 2区工程技术 Q1 ENGINEERING, CIVIL

Structures Pub Date : 2025-06-19 DOI:10.1016/j.istruc.2025.109487

Junyi Chen , Yonghui Wang , Huanan Xu , Faqiang Qiu

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引用次数: 0

摘要

提出了一种新型钢-混凝土-梯度泡沫铝吸能板（SC-GF-EAP），并通过冲击试验和有限元模拟对其动力性能进行了研究。测试了5个试件的破坏模式和能量吸收能力。所有试件均表现出相同的破坏模式，即SC复合板整体弯曲和局部压痕，梯度泡沫铝板破碎。确定了SC-GF-EAP的动力响应分为加载阶段和卸载阶段。实验揭示了混凝土芯材厚度和泡沫铝对SC-GF-EAP动力特性的影响。随后建立了一个经过验证的有限元模型来预测试件的损伤分布，随后进行了参数化研究，研究了这些关键参数：泡沫铝密度和锤形。

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Experimental and numerical study on steel–concrete–gradient aluminum foam energy absorbing panels subjected to impact load

This paper presents a new steel–concrete–gradient aluminum foam energy absorbing panel (SC-GF-EAP) and investigates its dynamic behaviours by carrying out the impact tests and Finite Element (FE) simulations. Five specimens were tested to characterize their failure patterns and energy absorption capacities. All the specimens exhibited the same failure mode characterized by global flexure and local indentation of the SC composite panel as well as crushing of gradient aluminum foam panels. The dynamic response of SC-GF-EAP was identified to comprise two stages: loading stage and unloading stage. The influence of thickness of concrete core and aluminum foam on the dynamic characteristics of the SC-GF-EAP was experimentally revealed. A validated FE model was subsequently developed to predict damage distribution of the specimens, with subsequent parametric studies investigating these key parameters: aluminum foam density and hammer shape.

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来源期刊

Structures Engineering-Architecture

CiteScore

5.70

自引率

17.10%

发文量

1187

期刊介绍： Structures aims to publish internationally-leading research across the full breadth of structural engineering. Papers for Structures are particularly welcome in which high-quality research will benefit from wide readership of academics and practitioners such that not only high citation rates but also tangible industrial-related pathways to impact are achieved.