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该文研究了简单立方排布(SC)、体心立方排布(BCC)以及面心立方排布(FCC)三维空心球泡沫的冲击动力学特性,讨论了不同点阵结构对具有密度梯度的三维金属空心球(MHS)泡沫动态性能的影响。研究结果表明,空心球排布结构的不同,改变了局部空心球的受力情况和变形模式(两球压缩模式和五球压缩模式以及二者之间的转化)。面心立方排布MHS泡沫单位质量的能量吸收率高于体心立方和简单立方排布MHS泡沫。同时,面心立方排布的3D结构更敏感于空心球阵列密度的变化。该文的研究将为多孔材料冲击动力学性能的多目标优化设计方面提供新的设计思路。
In this paper, the impact kinetics of simple cubic (SC), cubic (BCC) and three-dimensional (FCC) three-dimensional hollow-core foam with different density distributions Influence of Three Dimensional Metal Hollow Ball (MHS) Foam on Dynamic Properties. The results show that the different arrangement of the hollow sphere changes the stress and the deformation mode (the two-sphere compression mode and the five-sphere compression mode and the conversion between them) of the partial hollow sphere. The energy absorption rate of face-centered cubic MHS foam units is higher than that of body-centered cubic and simple cubic MHS foam. At the same time, the face-centered cubic structure is more sensitive to the change of the density of the hollow ball array. The research in this paper will provide a new design idea for multi-objective optimization design of impact kinetic properties of porous materials.