Free Vibration of Rectangular Plates with Porosity Distributions under Complex Boundary Constraints

Table 3

Comparison of frequency parameters of homogeneous rectangular plates subjected to different boundary conditions.

Boundary condition	h/a	Method	Mode number
			1	2	3	4	5	6
CCCC	0.3	Current	3.9716	4.9213	5.6007	6.3443	7.2322	7.4566
		Ref. [44]	4.0896	5.0651	5.6229	6.5367	7.4983	7.5321
	0.5	Current	2.5436	3.1425	3.3595	4.0441	4.3205	4.4677
		Ref. [44]	2.6471	3.2664	3.3723	4.2077	4.2887	4.5247
SSSS	0.3	Current	2.1738	3.1959	4.3472	4.3475	4.4351	4.8614
		Ref. [44]	2.1745	3.2406	4.3489	4.3489	4.5123	4.8623
	0.5	Current	1.3040	2.2821	2.6076	2.6080	2.9165	2.9322
		Ref. [44]	1.3047	2.3312	2.6094	2.6094	2.9174	2.9174