Effects of cell irregularity on the high strain compression of open-cell foams

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Dynamic stress–strain states for metal foams using a 3D cellular model (2014, background): “, 2005), and δ0 is the minimum distance of any two adjacent nuclei in a tetrakaidecahedron structure, given by (Zhu and Windle, 2002) δ0 1⁄4 ffiffiffi 3 p ðVcell=4Þ; ð2Þ where Vcell1⁄4Vfoam/N is the volume of a single tetrakaidecahedron cell.”
Three-dimensional modeling of the mechanical property of linearly elastic open cell foams (2005, background): “Under hydrostatic compression, however, the predicted plateau stress of random Voronoi foams is significantly lower than that of perfect Kelvin foams (Kraynik et al., 1997; Zhu and Windle, 2002).”
The effect of cell irregularity on the high strain compression of 2D Voronoi honeycombs (2006, result): “The co-existence of both the springs in parallel and springs in series behaviours at high compressive strains is comparable to similar findings for the high strain compression of irregular open-cell 3D foams (Zhu and Windle, 2002).”