Numerical analysis of compressive deformation for random closed-cell Al foam model

Abstract Most cellular solids presented random structure, while practically periodic models were often used in structure-property relations and numerical models. The finite element method was to create a 2D model that replicated the deformation characteristics of influences porosity strain rate on characteristic, energy dissipation mechanisms investigated. Poisson’s ratio evolution during compression also studied. simulated load-displacement curves found be consistent with experimental results, both containing elastic stage, plateau hardening stage densification stage. yield load insensitive rate. In addition, it generation propagation multiple shear bands responsible for characteristic. At cell/membrane level, four failure modes corresponding revealed. Moreover, decreased first then increased strain, which right manifested compressibility foam initial end compression. Meanwhile, change didn’t follow monotone function relation.