A New Efficient Modified First-Order Shear Model for Static Bending and Vibration Behaviors of Two-Layer Composite Plate

Table 6

Comparison of the nondimensional frequencies of an SSSS plate.

	Mode	Ferreira [28]	Mindlin [28]	Present
10	1	0.9346	0.930	0.9271
	2	2.2545	2.219	2.2055
	3	2.2545	2.219	2.2055
	4	3.4592	3.406	3.3600
	5	4.3031	4.149	4.1123
	6	4.3031	4.149	4.1123
100	1	0.0965	0.0963	0.0952
	2	0.2430	0.2406	0.2343
	3	0.2430	0.2406	0.2343
	4	0.3890	0.3847	0.3680
	5	0.4928	0.4807	0.4580
	6	0.4928	0.4807	0.4580