In this study, the consequence of cell-size, cell-wall-thickness and cell circularity together on the compressive performance of closed-cell aluminum foam was analyzed experimentally and with FEM simultaneously. The closed-cell metal foams (CAFs) with varying cell sizes of 55% porosity were synthesized through stir casting technique. The granular metallic calcium is used as a stabilizing/thickening agent, and TiH₂ powder used as a foaming agent. The uniaxial compression tests were performed to investigate the compressive deformation behavior of CAFs. The simulation studies were carried out by taking the assumption similar to experimental constraints. The circular-shaped cells were created in FE half symmetrical model of varying cell sizes (in 2-Dimensional). The cell sizes used in FE models are 1.5 mm, 2.5 mm, 2.8 mm and of 3.5 mm. While in experimental samples, different cell sizes obtained are 1.65 mm, 2.47 mm, 2.88 mm and 3.59 mm. In both of the investigations, it is observed that the energy absorption capacity and plateau strength decrease with an increase in cell sizes or vice versa. A similar effect was also observed with an increase in cell wall thickness. The obtained FE results are acceptable and comparable with the experimental for each cell size model. The deformation mechanism was analyzed using deformed sample images, which were captured during the deformation as well as during the different stages in the FEA models.

在本研究中，通过实验和有限元法同时分析了泡孔尺寸、泡孔壁厚和泡孔圆形度对闭孔泡沫铝压缩性能的影响。通过搅拌铸造技术合成了具有 55% 孔隙率的不同泡孔尺寸的闭孔金属泡沫 (CAF)。颗粒状金属钙用作稳定剂/增稠剂，TiH ₂粉末用作发泡剂。进行单轴压缩试验以研究 CAF 的压缩变形行为。通过采用类似于实验约束的假设来进行模拟研究。圆形单元是在不同单元尺寸（二维）的有限元半对称模型中创建的。FE 模型中使用的单元尺寸为 1.5 mm、2.5 mm、2.8 mm 和 3.5 mm。而在实验样品中，获得的不同细胞尺寸为 1.65 毫米、2.47 毫米、2.88 毫米和 3.59 毫米。在这两项研究中，观察到能量吸收能力和平台强度随着单元尺寸的增加而降低，反之亦然。随着细胞壁厚度的增加，也观察到类似的效果。获得的有限元结果是可以接受的，并且与每个单元尺寸模型的实验结果相当。使用变形的样本图像分析变形机制，这些图像是在变形期间以及 FEA 模型的不同阶段捕获的。