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

Table 7

New in-plane frequency parameters Ω for E-SS2-E-SS2 orthotropic rectangular plates.

B.C	Ex/Ey	Mode sequence
		1	2	3	4	5	6	7	8	9	10
E1-SS2-E1-SS2	2	0.0235	0.5455	1.1405	1.3588	1.5891	1.8082	1.9324	2.0003	2.1735	2.3922
	10	0.0240	0.5489	1.1731	1.3637	1.6229	2.1912	2.2785	2.3430	2.6287	2.9453
	20	0.0240	0.5493	1.1760	1.3643	1.6266	2.1929	2.3026	2.3511	2.6398	3.0223
	40	0.0240	0.5495	1.1774	1.3646	1.6283	2.1938	2.3126	2.3543	2.6450	3.0241
E2-SS2-E2-SS2	2	0.2338	0.6066	1.1586	1.3893	1.6163	1.8462	1.9541	2.0273	2.1966	2.4158
	10	0.2393	0.6140	1.1951	1.3954	1.6508	2.2128	2.3042	2.3524	2.6437	2.9687
	20	0.2399	0.6149	1.1985	1.3961	1.6546	2.2144	2.3275	2.3617	2.6552	3.0387
	40	0.2403	0.6154	1.2001	1.3965	1.6564	2.2152	2.3373	2.3654	2.6606	3.0403
E3-SS2-E3-SS2	2	1.4491	1.5607	1.6708	2.1238	2.2206	2.3636	2.7831	2.8881	2.9160	3.1928
	10	1.4865	2.1464	2.1482	2.3384	2.4904	2.6391	3.0096	3.0303	3.2176	3.5750
	20	1.4939	2.1868	2.2674	2.4217	2.5103	2.7504	3.0189	3.0388	3.3094	3.6140
	40	1.4986	2.1990	2.3344	2.4771	2.5220	2.8124	3.0233	3.0427	3.3596	3.6348