Structural Stability and Dynamics of FGM Plates Using an Improved 8-ANS Finite Element

Table 5

Nondimensional natural frequency of FGM CFFF plates ().

Material parameter	Mode number
	1		2		3		4
	Ref. [2]	Present	Ref. [2]	Present	Ref. [2]	Present	Ref. [2]	Present
Pure ceramic	15.814	15.430	38.767	37.780	97.148	94.570	124.28	120.80
	13.222	13.228	32.415	32.389	81.236	81.074	103.92	103.56
	13.047	13.052	31.986	31.960	80.166	80.000	102.54	102.19
	12.896	12.901	31.617	31.590	79.244	79.073	101.36	101.00
	12.851	12.856	31.507	31.480	78.969	78.797	101.01	100.65
Pure metal	10.767	11.060	26.395	27.079	66.144	67.785	84.615	86.584

Results of [2] are calculated by .