Comparison Study on the Exact Dynamic Stiffness Method for Free Vibration of Thin and Moderately Thick Circular Cylindrical Shells

Table 1

The lowest nine frequencies of the C-C circular cylindrical shell (Hz).

Order		Present	Reference [28]	Reference [29]
1	(1, 2)	12.00	12.25	12.13
2	(1, 3)	19.56	19.64	19.61
3	(2, 3)	23.10	23.18	23.28
4	(2, 2)	27.16	27.69	28.06
5	(1, 1)	28.29	—	30.09
6	(3, 3)	31.48	31.6	31.97
7	(1, 4)	36.42	36.7	36.48
8	(2, 4)	37.28	37.55	37.38
9	(3, 4)	39.60	39.87	39.77

—: not given.