Research Article

A Study on Mode Shape and Natural Frequency of Rotating Flexible Cracked Annular Thin Disk

Figure 5

The natural frequencies curve of rotating flexible annular thin disks with four kinds of cracks of various parameters: (ai) four kinds of cracked disks with isometric cracks, (bi) two kinds of cracked disks with equal intersection angle, (ci) three kinds of cracked disks with equal crack midpoint radius, i is each vibration mode’s order, and i = 1, 2, …, 9. Blue: RO-crack, red: RC-crack, black: CF-crack, green: TG-crack. Solid line: mode A, dotted line: mode B. +: (0, 0), ∗: (0, 1), △: (0, 2), ○: (0, 3), ◇: (0, 4).
(a)
(b)
(c)