Research on Quasi-static and Dynamic Mechanical Behaviors of Aluminum Foam and Its Polyurethane Composites

Shengwei ZHAO; Gang ZHOU; Kehui WANG; Ming LI; Yong DU; Baihan CHEN

doi:10.12382/bgxb.2025.0747

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Research on Quasi-static and Dynamic Mechanical Behaviors of Aluminum Foam and Its Polyurethane Composites

更新时间：2026-02-10

- Research on Quasi-static and Dynamic Mechanical Behaviors of Aluminum Foam and Its Polyurethane Composites
- Acta Armamentarii Vol. 46, Issue S2, Pages: 250747(2025)
- 作者机构：
  
  1. 西北核技术研究所, 陕西西安 710024
  2. 清华大学工程物理系, 北京 100084
- 作者简介：
- 基金信息：
- DOI：10.12382/bgxb.2025.0747
  CLC：
- Received：15 August 2025，
  
  Online First：03 February 2026，
  
  Published：2025
- 稿件说明：
移动端阅览
Shengwei ZHAO, Gang ZHOU, Kehui WANG, et al. Research on Quasi-static and Dynamic Mechanical Behaviors of Aluminum Foam and Its Polyurethane Composites[J]. Acta Armamentarii, 2025, 46(S2): 250747.
DOI：

Shengwei ZHAO, Gang ZHOU, Kehui WANG, et al. Research on Quasi-static and Dynamic Mechanical Behaviors of Aluminum Foam and Its Polyurethane Composites[J]. Acta Armamentarii, 2025, 46(S2): 250747. DOI： 10.12382/bgxb.2025.0747.

摘要

针对开孔AF在高应变率环境下的压缩性能研究不足的问题

通过准静态压缩、落锤冲击实验和霍普金森压杆实验探究了孔隙率(65%和75%)、孔径(0.5mm、1.0mm和2.0mm)及应变率对材料压缩性能的影响机制。研究结果表明:降低孔隙率、增大孔径及提高应变率均能显著提升平台应力和能量吸收能力。依据Avalle模型对准静态实验结果进行拟合

紧接着针对动态曲线中待定参数进行拟合

所得结果能够预测该类材料静动态时的应力结果。研究成果为开孔AF在高速冲击防护领域的设计优化提供了重要依据。

Abstract

The compression performance of open-cell aluminum foam under the high strain rate environment is studied.A composite aluminum foam is preparated by filling polyurethane intoaluminum foam.The influence mechanisms of porosity (65% and 75%)

pore diameter (0.5mm

1.0mm and 2.0mm) and strain rate on the compression performance of materials are explored through quasi-static compression

drop hammer impact test and Hopkinson pressure bar (SPHB) test.The research results indicate that the stress and energy absorption capacity of aluminum foam can be significantly enhanced by reducing porosity

and increasing pore size and strain rate.According to the Avalle model

the static experimental results are fitted

and then the undetermined parameters in the dynamic curve are fitted.The obtained results can predict the stress results of this type of material during static and dynamic states.The research results provide an important basis for the design optimization of open-cell aluminum foam in the field of high-speed impact protection.

关键词

Keywords

references

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