Macro and micro collapse mechanisms of closed-cell aluminium foams during quasi-static compression

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• 作者：M.A. Kader^a ; M.A. Islam^a ; M. Saadatfar^b ; ^{mohammad.saadatfar@anu.edu.au} ; P.J. Hazell^a ; A.D. Brown^a ; S. Ahmed^a ; J.P. Escobedo^a ; ^{J.Escobedo-Diaz@adfa.edu.au}
• 关键词：Closed-cell foam ; X-ray tomography ; Finite element modelling ; Microstructure ; Pore collapse mechanism
• 刊名：Materials & Design
• 出版年：2017
• 出版时间：15 March 2017
• 年：2017
• 卷：118
• 期：Complete
• 页码：11-21
• 全文大小：4292 K
• 卷排序：118

文摘

The X-ray computed tomography based FE simulations for closed-cell aluminium foams agrees well with experimental results. The variation of cell-walls strength dominates the collapse process over pore shape and size distribution. The plateau borders are able to carry more load and undergo less deformation compared to cell-walls during deformation. Significant amounts of lateral strain occur at cellular level although the global deformation at lower strains is negligible.