Vibrations of Three-Layered Cylindrical Shells with FGM Middle Layer Resting on Winkler and Pasternak Foundations

Table 3

Comparison of frequency parameter Ω=𝜔𝑅(1−𝜈²)𝜌/𝐸 for SS-SS cylindrical shell (𝑚=1, 𝐿/𝑅=20, 𝜈=0.3).

ℎ/𝑅	𝑛	Zhang et al. [8]	Present	Difference percentage
0.002	0	0.0929586	0.0929296	−0.0311967
	1	0.0161011	0.0161011	0.0000000
	2	0.0054532	0.0054533	0.0018338
	3	0.0050418	0.0050419	0.0019834
	4	0.0085340	0.0085344	0.0046871