Table 1.

Identified material parameters, adjusted R² and residual norms for the proposed microstructurally inspired damage model (Micro), the Simo damage model (Simo), and the Ogden damage model (Ogden). Values are arithmetic means for n = 5 samples. Note that the parameter δ in the microstructural model is represented by its damage parameters c₁ and c₂, through δ = c₁ + c₂λ_m.

Micro	μ0 [kPa]	μ1 [kPa]	β	δ	γ	c1	c2	R̃2	norm [MPa]
	0.41	225.93	5.53	-	0.97	−0.29	0.42	0.997	1.05
Simo	μ0 [kPa]	μ1 [kPa]	β	δ	γ	α1	α2	R̃2	norm [MPa]
	9.40	2529.37	3.93	0.44	0.96	1.48	0.05	0.996	1.30
Ogden	μ0 [kPa]	μ1 [kPa]	β	δ	γ	m	r	R̃2	norm [MPa]
	12.10	406.90	4.73	0.54	0.96	1.00	20.71	0.987	5.48