[Retracted] Free Vibration Analysis of Thick Rectangular and Elliptical Plates with Concentric Cut-Out

Table 8

Frequency parameter for supported elliptical plate with and h/b = 0.2.

	0	0.1	0.2	0.3	0.4	0..5	0.6
	1.7680	1.7446	1.7180	1.7402	1.8355	2.0222	2.3245
	3.8667	3.8089	3.5668	3.2336	2.9938	2.9118	2.9903
	3.8667	3.8093	3.5674	3.2342	2.9941	2.9121	2.9905
	5.5892	5.5317	5.4308	5.2881	4.9846	4.3669	3.9942
	6.6046	6.5418	6.3772	5.8040	5.1319	5.0782	5.2457
	6.6046	6.6107	6.9262	7.4488	7.1699	6.7593	6.5139