High-Frequency Vibration Analysis and Optimization of Irregular Wear of Pantograph Carbon Strips

Figure 3

Mode shapes and modal frequencies of the first six vertical modes. (a) Mode 1,65.86 Hz. (b) Mode 2,139.81 Hz. (c) Mode 3,241.57 Hz. (d) Mode 4,389.10 Hz. (e) Mode 5,588.94 Hz. (f) Mode 6,810.66 Hz.

(a)

(b)

(c)

(d)

(e)

(f)