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

Table 2

Comparison of natural frequencies of stiffened cylindrical shells with simple support boundaries.

n	m=1				m=2				m=3
	PRM	WPM	FEM	present	PRM	WPM	FEM	present	PRM	WPM	FEM	present
1	1199	1216	1244	1223.49	3493	3536	3634	3435	5839	5907	6080	5943
2	1564	1635	1642	1596.01	2113	2176	2202	21535	3378	3430	3190	3555
3	4387	4578	4015	4356.80	4400	4573	4109	4439	4595	4788	4428	4527
4	8377	8781	7409	8105.72	8392	8731	7221	8468	8449	8728	8229	8538
5	13490	14172	13143	12979	13508	14119	13356	1387	13555	14069	13589	14389