Table 2.

Fitting parameters of Eq. (24) for size irregularity gradient foams.

Model	$c_1$ (MPa)	$c_2$ (MPa)	$c_3$ (MPa)	${\overline{\omega }}_{\mathrm{A}}$ (MPa)	$c_4$	$c_5$ (mm)	$c_6$ (MPa)	$c_7$ (MPa)	$c_8$ (MPa)
C3	2502.40	2.32	−61.96	68.64	3.02	1.82	−3.84	8.62	0.03
A3	2884.80	3.21	−119.98	73.82	1.92	1.05	−3.67	4.75	0.06