Research Article

Vibration Characteristics of Ring-Stiffened Functionally Graded Circular Cylindrical Shells

Table 15

Variation of fundamental natural frequencies against h/R, type I FG cylindrical shell with stainless steel ring stiffeners ( , , ).

5

0.001352.56750.89651.99251.85951.71151.43451.16350.995
0.005224.99323.98524.64324.56324.47324.30724.14524.045
0.007223.11422.16222.78322.70722.62322.46622.31322.218
0.01221.39320.49321.08121.00020.92920.78220.63720.547
0.02115.81215.09015.56115.50415.44015.32115.20415.133
0.03115.09614.39615.06014.79814.73614.62114.50714.438
0.04114.71714.02814.47214.42414.36214.24914.13714.069
0.05114.48213.80014.24514.19114.13114.01913.90813.841