Vibration Analysis of a Rotating Disk with a Crack

Figure 6

Mode shape (0,3) for a rotating disk (𝜔=50 Hz) with a radial crack of length 𝑎/𝑅_𝑜=0.6. (a) The symmetric mode with a natural frequency of 196.6 Hz and (b) the antisymmetric mode with a natural frequency of 171.2 Hz.

(a)

(b)