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Table 2 Coefficients underlying macro energy densities (\(\psi _{KE}\), \(\psi _{PE}\)) with respect to the two metamaterials

From: Enriched homogenized model for viscoelastic plane wave propagation in periodic layered composites

Meta-mat\({\varvec{C}}_{\mathbf {(1)}}\)\({\varvec{C}}_{\mathbf {(2)}}\)\({\varvec{C}}_{\mathbf {(3)}}\)\({\varvec{C}}_{\mathbf {(4)}}\)\({\varvec{C}}_{\mathbf {(5)}}\)\({\varvec{C}}_{\mathbf {(6)}}\)\({\varvec{C}}_{\mathbf {(7)}}\)\({\varvec{C}}_{\mathbf {(8)}}\)
1272.1\(54.9 D^2\)2759.653.6246741\(72.9 D^2\)\(\displaystyle {\frac{1.97\times 10^6}{D^2}}\)582.9
2612.1\(84.0 D^2\)2459.61388.374414000\(7457.6 D^2\)\(\displaystyle {\frac{5.92\times 10^8}{D^2}}\)103455