New Finite Modeling of Free and Forced Vibration Responses of Piezoelectric FG Plates Resting on Elastic Foundations in Thermal Environments

Table 4

Nondimensional natural frequencies of Si₃N₄/SUS304 plates ( and are the reference values of and at T₀ = 300 K).

T (K)	n = 0.5			n = 1			n = 5
	[42]	[31]	This work	[42]	[31]	This work	[42]	[31]	This work
400	15.938	15.355	15.467	13.915	13.433	13.646	11.175	10.852	11.012
500	15.468	15.192	15.285	13.462	13.280	13.332	10.749	10.716	10.723
600	14.939	15.008	14.998	12.941	13.093	13.001	10.242	10.528	10.210