A Gradient Stable Node-Based Smoothed Discrete Shear Gap Method for Analysis of Reissner–Mindlin Plates

Table 6

A nondimensional frequency parameter of the square plate (t/a) = 0.005) with various boundary conditions.

Plate type	Method	Mode sequence number
		1	2	3	4
SSSF	FEM-DSG	11.7066	27.9376	42.1347	60.7093
	NS-FEM	11.5084	23.1688	23.2168	26.8704
	NS-DSG	11.3960	26.6128	40.2935	56.4514
	GS-DSG	11.5498	27.0919	40.7145	57.6083
	Reference [74]	11.685	27.756	41.197	59.066
SFSF	FEM-DSG	9.6797	16.1112	37.0384	39.8117
	NS-FEM	9.5491	15.7288	23.1230	23.1655
	NS-DSG	9.5757	15.2989	34.8264	38.2995
	GS-DSG	9.5996	15.7468	35.4943	38.5924
	Reference [74]	9.631	16.135	36.726	38.945
CCCF	FEM-DSG	24.3065	41.2621	65.6722	80.5606
	NS-FEM	23.4263	25.5865	25.6584	30.8248
	NS-DSG	23.4858	39.0341	60.8599	73.7164
	GS-DSG	23.6981	39.4852	61.9860	74.9583
	Reference [74]	24.020	40.039	63.493	76.761
CFCF	FEM-DSG	22.4444	26.9890	45.1686	63.3315
	NS-FEM	21.7548	24.7811	24.8217	25.7548
	NS-DSG	21.7768	25.8569	42.4465	58.8471
	GS-DSG	21.9631	26.1317	42.9097	59.9521
	Reference [74]	22.272	26.529	43.664	64.466
CFSF	FEM-DSG	15.3251	20.7977	40.5433	50.8558
	NS-FEM	14.9958	20.0826	23.9089	23.9517
	NS-DSG	15.0267	19.8965	38.1048	48.1404
	GS-DSG	15.1039	20.2503	38.7071	48.7522
	Reference [74]	15.285	20.673	39.882	49.500