Table 1.

The geometric and material properties of the unit cell under study

Geometrical properties		Material properties
Radius of lead inclusion	5 mm	Parameter	Lead	Rubber	Epoxy
Thickness of rubber coating	2.5 mm	$\mathit{\rho }(\times {10}^3{\text{kg/m}}^3)$	11.6	1.3	1.18
Length of the unit cell	20.1 mm	$\mathit{\lambda }$ (${\text{N/m}}^2$)	$4.23\times {10}^{10}$	$6\times {10}^5$	$4.43\times {10}^9$
		$\mathit{\mu }$ (${\text{N/m}}^2$)	$1.49\times {10}^{10}$	$4\times {10}^4$	$1.59\times {10}^9$