Free In-Plane Vibrations of Orthotropic Rectangular Plates by Using an Accurate Solution

Table 6

New in-plane frequency parameters Ω for E-SS1-E-SS1 orthotropic rectangular plates.

B.C	Ex/Ey	Mode sequence
		1	2	3	4	5	6	7	8	9	10
E1-SS1-E1-SS1	2	0.0235	0.5455	1.0005	1.1406	1.3588	1.5891	1.8082	1.9324	2.0003	2.1735
	10	0.0239	0.5489	1.0006	1.1731	1.3637	1.6229	2.0003	2.1912	2.2785	2.3431
	20	0.0240	0.5493	1.0006	1.1760	1.3643	1.6266	2.0003	2.1929	2.3026	2.3511
	40	0.0240	0.5495	1.0006	1.1774	1.3646	1.6283	2.0003	2.1938	2.3126	2.3543
E2-SS1-E2-SS1	2	0.2299	0.6066	1.0524	1.1586	1.3893	1.6163	1.8462	1.9541	2.0273	2.1966
	10	0.2340	0.6140	1.0543	1.1951	1.3954	1.6508	2.0283	2.2128	2.3042	2.3524
	20	0.2345	0.6149	1.0545	1.1985	1.3961	1.6546	2.0284	2.2144	2.3275	2.3617
	40	0.2348	0.6154	1.0546	1.2001	1.3965	1.6564	2.0285	2.2152	2.3373	2.3654
E3-SS1-E3-SS1	2	0.9319	1.4491	1.6708	1.8653	2.1238	2.2206	2.3636	2.7831	2.8014	2.8881
	10	0.9342	1.4865	1.8698	2.1482	2.3384	2.4905	2.6391	2.8077	3.0096	3.0303
	20	0.9345	1.4939	1.8703	2.1868	2.4217	2.5103	2.7504	2.8085	3.0189	3.0388
	40	0.9347	1.4986	1.8706	2.1990	2.4771	2.5220	2.8089	2.8124	3.0233	3.0427