A Unified Approach of Free Vibration Analysis for Stiffened Cylindrical Shell with General Boundary Conditions

Table 7

Comparison of natural frequencies by different methods.

	=0.291				=0.582				=0.873
	MVM	WPM	FEM	present	MVM	WPM	FEM	present	MVM	WPM	FEM	present
2	4550	4470	4559	4558.44	4580	4450	4660	4649.62	5040	4885	5432	5098.44
3	3870	3655	3897	3790.55	6710	6235	6778	6370.77	10330	9500	9564	9842.43
4	6550	5950	6435	6443.51	12830	11790	10098	11345.66	20200	18010	19797	18902.30
5	10000	9510	9667	9559.39	20120	19020	18890	19554.33	31800	25570	29905	30222.30