Table 1 Characteristic frequency of pantograph and catenary.

From: Analysis of the abnormal wear of the pantograph contact strip through combined experimental and simulation approaches

Vertical of collector head (Hz)

Vertical of upper frame (Hz)

Lateral of upper frame (Hz)

Vertical of catenary (Hz)

21.02

61.52

57.72

11.16

42.08

192.46

75.18

22.58

53.10

201.21

143.78

41.38

56.92

237.24

193.12

73.38

117.42

397.36

281.59

143.13

192.36

677.37

366.63

178.20