Research into the effect of cell diameter of aluminum foam on its compressive and energy absorption properties
Research into the effect of cell diameter of aluminum foam on its compressive and energy absorption properties
复制标题
DOI：
10.1016/j.msea.2006.11.091
复制
发表时间：
2007-04
期刊：
影响因子：
6.4
通讯作者：
Hai-jun Yu;Zhiqian Guo;Bing Li;G. Yao;H. Luo;Yihan Liu
中科院分区：
文献类型：
--
作者：
Hai-jun Yu;Zhiqian Guo;Bing Li;G. Yao;H. Luo;Yihan Liu
研究了闭孔泡沫铝的准静态压缩力学行为和变形机理，探讨了泡沫铝孔径对压缩性能和吸能性能的影响。结果表明，闭孔泡沫铝的压缩过程可分为三个变形阶段：线弹性阶段、塑性塌陷阶段和致密化阶段。泡孔直径对其压缩性能的影响较为明显：随着泡孔直径的增大，峰值应力（σ0）和名义杨氏模量（E0.2）增大，吸能能力增大，但吸能效率降低，且越来越不稳定。同时，压缩试样也明显受到尺寸效应的影响：当L/d≥6时，闭孔泡沫铝的压缩性能具有重现性。
The quasi-static compressive mechanical behavior and deformation mechanism of closed-cell aluminum foam were researched, and the effect of cell diameter of aluminum foam on compressive and energy absorption properties was also discussed. Results show that the compressive process of closed-cell aluminum foam is characterized by three deformation stages: linear elastic stage, plastic collapse stage and densification stage. The effect of cell diameter on its compressive property is obvious: with the increasing cell diameter, the peak stress (σ0) and nominal Young's modulus (E0.2) increase, energy absorption capability increases, however the energy absorption efficiency decreases and becomes more and more unstable. At the same time, the compressive specimen is also affected by the size effects obviously: when L/d≥6, the compressive property of closed-cell aluminum foam is reproducible.