Experimental and Numerical Analysis of Nonlinear Flexural Behaviour of Lattice-Web Reinforced Foam Core Composite Sandwich Panels

Table 5

Stress-strain data points of PU foam with different densities [32].

Density (kg/m^3)
40	σTrue (MPa)	0	0.151	0.4	1.25
	ε	0	0.05	0.8	0.83
60	σTrue (MPa)	0	0.416	0.5	1.27
	ε	0	0.058	0.7	0.8
80	σTrue (MPa)	0	0.504	0.87	1.81
	ε	0	0.049	0.67	0.78
100	σTrue (MPa)	0	0.703	1.39	2.69
	ε	0	0.045	0.63	0.76