Vibration Characteristics Analysis of Composite Laminated Annular/Circular Plate Using High-Order Shear Deformation Theory

Table 6

The frequency parameter for the composite laminated annular plate with different radius ratios and boundary conditions.

R0/R1	BC	Mode number
		1	2	3	4	5	6	7	8
0.1	C-E1	0.2406	0.3027	0.6400	0.6400	0.7337	0.7337	0.7560	0.8754
	E1-E1	0.1581	0.1847	0.5236	0.6400	0.6400	0.7013	0.7013	0.8754
	E1-E2	0.1577	0.1847	0.2920	0.2920	0.5134	0.5190	0.5190	0.7013
	E2-E2	0.1575	0.1847	0.2748	0.2748	0.5121	0.5185	0.5185	0.7013
0.3	C-E1	0.3222	0.8324	0.8480	0.8480	0.9890	0.9890	1.0692	1.1834
	E1-E1	0.1725	0.1903	0.6501	0.7515	0.7515	0.8480	0.8480	0.9890
	E1-E2	0.1722	0.1903	0.3762	0.3762	0.5594	0.5594	0.6332	0.7515
	E2-E2	0.1720	0.1903	0.2940	0.2940	0.5254	0.5254	0.6183	0.7515
0.5	C-E1	0.4915	1.2811	1.2811	1.3576	1.3576	1.4790	1.4790	1.6372
	E1-E1	0.1973	0.2074	0.7385	0.7385	0.9624	1.2161	1.2161	1.2811
	E1-E2	0.1972	0.2074	0.5410	0.5410	0.6993	0.6993	0.7385	0.7385
	E2-E2	0.1970	0.2074	0.3233	0.3233	0.5601	0.5601	0.7385	0.7385
0.8	C-E1	0.4915	1.2811	1.2811	1.3576	1.3576	1.4790	1.4790	1.6372
	E1-E1	0.2990	0.3013	0.6889	0.6889	1.0358	1.0358	1.1316	1.3101
	E1-E2	0.2990	0.3013	0.6889	0.6889	1.0358	1.0358	1.1316	1.3101
	E2-E2	0.2989	0.3013	0.4561	0.4561	0.6889	0.6889	0.7547	0.7547