Elastic Wave Properties of an Adaptive Electromechanical Metamaterial Beam

Table 1

Parameters of the metamaterial beam.

Parameter	Symbol	Value
Length of the unit cell	2l	50 mm
Thickness of the host beam	hs	5 mm
Thickness of the piezoelectric layer	hp	0.5 mm
Width of the metamaterial beam	b	20 mm
Young’s modulus of host beam	Es	69 GPa
Density of the host beam	ρs	2700 kgm^−3
Young’s modulus of the piezoelectric layer	Ep	60.6 GPa
Density of the piezoelectric layer	ρp	7500 kgm^−3
Piezoelectric strain constant	d31	−2.74e^−10 CN^−1
Permittivity component		2.56e^−10 Fm^−1