Table 8.

Nondimensional natural frequencies $\Omega$ of FFFF Al/Al₂O FGM rectangular plates.

b/a	h/a	$\overline{\mathit{m}}$	Mode
			1	2	3	4	5	6
1	0.02	0	4.038	5.976	7.361	10.44	10.44	18.41
		0.5	3.421	5.067	6.238	8.849	8.849	15.59
		2	2.804	4.153	5.112	7.252	7.252	12.78
		5	2.657	3.932	4.843	6.869	6.869	12.11
	0.1	0	3.849	5.735	7.060	9.660	9.660	16.75
		0.5	3.269	4.861	5.988	8.213	8.213	14.25
		2	2.677	3.969	4.893	6.711	6.711	11.63
		5	2.525	3.752	4.621	6.312	6.312	10.91
2	0.02	0	1.656	1.997	4.389	4.511	6.690	7.604
		0.5	1.405	1.693	3.719	3.821	5.670	6.442
		2	1.152	1.387	3.048	3.132	4.647	5.280
		5	1.090	1.315	2.888	2.969	4.401	5.004
	0.1	0	1.610	1.927	4.196	4.382	6.419	7.176
		0.5	1.364	1.636	3.563	3.717	5.443	6.099
		2	1.117	1.341	2.918	3.042	4.446	4.991
		5	1.058	1.267	2.753	2.875	4.201	4.700