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通过考察两种基体泡沫Ａｌ（分别为脆性和塑性）单向压缩应力应变曲线，探讨了其形变和能量吸收特征及机理，得到了一些与以往不同的研究结果．研究发现，与其他多孔固体材料一样，泡沫Ａｌ的压缩形变过程也经历三个区域，即线性弹性区、平台区和致密化区；泡沫Ａｌ的吸能本领随屈服强度的提高而增强；在屈服强度相近的情况下，脆性泡沫Ａｌ的吸能本领高于塑性泡沫Ａｌ；泡沫Ａｌ吸能效率峰值对应于较低的应变值（约为０１５—０２５）；吸能效率峰值对基体成分和状态不敏感，随密度增加，吸能效率峰值呈下降趋势．
By investigating the uniaxial compressive stress-strain curves of two matrix Al foams (brittleness and ductility respectively), the deformation and energy absorption characteristics and mechanism were discussed, and some different results were obtained. It is found that the compressive deformation process of Al foam also undergoes three regions, ie, linear elastic zone, plateau zone and densified zone, as with other porous solid materials. The energy absorption capacity of Al foam increases with yield strength. In the case of similar strength, the energy absorption capacity of brittle foam Al is higher than that of plastic foam Al. The peak absorption efficiency of foam Al corresponds to the lower strain (about 015-025) Composition and state insensitive, with the increase of density, energy absorption peak value showed a downward trend.