Research Article

Frequency Equations for the In-Plane Vibration of Circular Annular Disks

Table 4

Exact frequency parameters of in-plane vibration of a solid disk with clamped edge ( ).

Mode

11.94413.01853.01854.7021
23.11264.01274.01275.8985
34.91045.73985.73987.3648
45.35706.70796.70798.9816
56.77637.64427.64429.5296
68.49389.43569.435611.1087
78.64589.98949.989412.5940